--- _id: '10858' abstract: - lang: eng text: The cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing costs. In this direction, thermoelectric materials that do not rely on rare or toxic elements such as tellurium or lead need to be produced using high-throughput technologies not involving high temperatures and long processes. Bi2Se3 is an obvious possible Te-free alternative to Bi2Te3 for ambient temperature thermoelectric applications, but its performance is still low for practical applications, and additional efforts toward finding proper dopants are required. Here, we report a scalable method to produce Bi2Se3 nanosheets at low synthesis temperatures. We studied the influence of different dopants on the thermoelectric properties of this material. Among the elements tested, we demonstrated that Sn doping resulted in the best performance. Sn incorporation resulted in a significant improvement to the Bi2Se3 Seebeck coefficient and a reduction in the thermal conductivity in the direction of the hot-press axis, resulting in an overall 60% improvement in the thermoelectric figure of merit of Bi2Se3. acknowledgement: "M.L., Y.Z., T.Z. and K.X. thank the China Scholarship Council for their scholarship\r\nsupport. Y.L. acknowledges funding from the European Union’s Horizon 2020 research and\r\ninnovation program under the Marie Sklodowska-Curie grant agreement No. 754411. J.L. thanks the ICREA Academia program and projects MICINN/FEDER RTI2018-093996-B-C31 and G.C. 2017 SGR 128. ICN2 acknowledges funding from the Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO ENE2017-85087-C3." article_number: '1827' article_processing_charge: No article_type: original author: - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Ting full_name: Zhang, Ting last_name: Zhang - first_name: Yong full_name: Zuo, Yong last_name: Zuo - first_name: Ke full_name: Xiao, Ke last_name: Xiao - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Li M, Zhang Y, Zhang T, et al. Enhanced thermoelectric performance of n-type Bi2Se3 nanosheets through Sn doping. Nanomaterials. 2021;11(7). doi:10.3390/nano11071827 apa: Li, M., Zhang, Y., Zhang, T., Zuo, Y., Xiao, K., Arbiol, J., … Cabot, A. (2021). Enhanced thermoelectric performance of n-type Bi2Se3 nanosheets through Sn doping. Nanomaterials. MDPI. https://doi.org/10.3390/nano11071827 chicago: Li, Mengyao, Yu Zhang, Ting Zhang, Yong Zuo, Ke Xiao, Jordi Arbiol, Jordi Llorca, Yu Liu, and Andreu Cabot. “Enhanced Thermoelectric Performance of N-Type Bi2Se3 Nanosheets through Sn Doping.” Nanomaterials. MDPI, 2021. https://doi.org/10.3390/nano11071827. ieee: M. Li et al., “Enhanced thermoelectric performance of n-type Bi2Se3 nanosheets through Sn doping,” Nanomaterials, vol. 11, no. 7. MDPI, 2021. ista: Li M, Zhang Y, Zhang T, Zuo Y, Xiao K, Arbiol J, Llorca J, Liu Y, Cabot A. 2021. Enhanced thermoelectric performance of n-type Bi2Se3 nanosheets through Sn doping. Nanomaterials. 11(7), 1827. mla: Li, Mengyao, et al. “Enhanced Thermoelectric Performance of N-Type Bi2Se3 Nanosheets through Sn Doping.” Nanomaterials, vol. 11, no. 7, 1827, MDPI, 2021, doi:10.3390/nano11071827. short: M. Li, Y. Zhang, T. Zhang, Y. Zuo, K. Xiao, J. Arbiol, J. Llorca, Y. Liu, A. Cabot, Nanomaterials 11 (2021). corr_author: '1' date_created: 2022-03-18T09:45:02Z date_published: 2021-07-14T00:00:00Z date_updated: 2025-06-12T06:42:18Z day: '14' ddc: - '540' department: - _id: MaIb doi: 10.3390/nano11071827 ec_funded: 1 external_id: isi: - '000676570000001' pmid: - '34361214' file: - access_level: open_access checksum: f28a8b5cf80f5605828359bb398463b0 content_type: application/pdf creator: dernst date_created: 2022-03-18T09:53:15Z date_updated: 2022-03-18T09:53:15Z file_id: '10859' file_name: 2021_Nanomaterials_Li.pdf file_size: 4867547 relation: main_file success: 1 file_date_updated: 2022-03-18T09:53:15Z fulldoi: https://doi.org/10.3390/nano11071827 has_accepted_license: '1' intvolume: ' 11' isi: 1 issue: '7' keyword: - General Materials Science - General Chemical Engineering language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Nanomaterials publication_identifier: issn: - 2079-4991 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Enhanced thermoelectric performance of n-type Bi2Se3 nanosheets through Sn doping tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 11 year: '2021' ... --- _id: '14800' abstract: - lang: eng text: 'Research on two-dimensional (2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications. In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief background introduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials (PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field. ' article_number: '2108017' article_processing_charge: No article_type: review author: - first_name: Cheng full_name: Chang, Cheng id: 9E331C2E-9F27-11E9-AE48-5033E6697425 last_name: Chang orcid: 0000-0002-9515-4277 - first_name: Wei full_name: Chen, Wei last_name: Chen - first_name: Ye full_name: Chen, Ye last_name: Chen - first_name: Yonghua full_name: Chen, Yonghua last_name: Chen - first_name: Yu full_name: Chen, Yu last_name: Chen - first_name: Feng full_name: Ding, Feng last_name: Ding - first_name: Chunhai full_name: Fan, Chunhai last_name: Fan - first_name: Hong Jin full_name: Fan, Hong Jin last_name: Fan - first_name: Zhanxi full_name: Fan, Zhanxi last_name: Fan - first_name: Cheng full_name: Gong, Cheng last_name: Gong - first_name: Yongji full_name: Gong, Yongji last_name: Gong - first_name: Qiyuan full_name: He, Qiyuan last_name: He - first_name: Xun full_name: Hong, Xun last_name: Hong - first_name: Sheng full_name: Hu, Sheng last_name: Hu - first_name: Weida full_name: Hu, Weida last_name: Hu - first_name: Wei full_name: Huang, Wei last_name: Huang - first_name: Yuan full_name: Huang, Yuan last_name: Huang - first_name: Wei full_name: Ji, Wei last_name: Ji - first_name: Dehui full_name: Li, Dehui last_name: Li - first_name: Lain Jong full_name: Li, Lain Jong last_name: Li - first_name: Qiang full_name: Li, Qiang last_name: Li - first_name: Li full_name: Lin, Li last_name: Lin - first_name: Chongyi full_name: Ling, Chongyi last_name: Ling - first_name: Minghua full_name: Liu, Minghua last_name: Liu - first_name: 'Nan' full_name: Liu, Nan last_name: Liu - first_name: Zhuang full_name: Liu, Zhuang last_name: Liu - first_name: Kian Ping full_name: Loh, Kian Ping last_name: Loh - first_name: Jianmin full_name: Ma, Jianmin last_name: Ma - first_name: Feng full_name: Miao, Feng last_name: Miao - first_name: Hailin full_name: Peng, Hailin last_name: Peng - first_name: Mingfei full_name: Shao, Mingfei last_name: Shao - first_name: Li full_name: Song, Li last_name: Song - first_name: Shao full_name: Su, Shao last_name: Su - first_name: Shuo full_name: Sun, Shuo last_name: Sun - first_name: Chaoliang full_name: Tan, Chaoliang last_name: Tan - first_name: Zhiyong full_name: Tang, Zhiyong last_name: Tang - first_name: Dingsheng full_name: Wang, Dingsheng last_name: Wang - first_name: Huan full_name: Wang, Huan last_name: Wang - first_name: Jinlan full_name: Wang, Jinlan last_name: Wang - first_name: Xin full_name: Wang, Xin last_name: Wang - first_name: Xinran full_name: Wang, Xinran last_name: Wang - first_name: Andrew T.S. full_name: Wee, Andrew T.S. last_name: Wee - first_name: Zhongming full_name: Wei, Zhongming last_name: Wei - first_name: Yuen full_name: Wu, Yuen last_name: Wu - first_name: Zhong Shuai full_name: Wu, Zhong Shuai last_name: Wu - first_name: Jie full_name: Xiong, Jie last_name: Xiong - first_name: Qihua full_name: Xiong, Qihua last_name: Xiong - first_name: Weigao full_name: Xu, Weigao last_name: Xu - first_name: Peng full_name: Yin, Peng last_name: Yin - first_name: Haibo full_name: Zeng, Haibo last_name: Zeng - first_name: Zhiyuan full_name: Zeng, Zhiyuan last_name: Zeng - first_name: Tianyou full_name: Zhai, Tianyou last_name: Zhai - first_name: Han full_name: Zhang, Han last_name: Zhang - first_name: Hui full_name: Zhang, Hui last_name: Zhang - first_name: Qichun full_name: Zhang, Qichun last_name: Zhang - first_name: Tierui full_name: Zhang, Tierui last_name: Zhang - first_name: Xiang full_name: Zhang, Xiang last_name: Zhang - first_name: Li Dong full_name: Zhao, Li Dong last_name: Zhao - first_name: Meiting full_name: Zhao, Meiting last_name: Zhao - first_name: Weijie full_name: Zhao, Weijie last_name: Zhao - first_name: Yunxuan full_name: Zhao, Yunxuan last_name: Zhao - first_name: Kai Ge full_name: Zhou, Kai Ge last_name: Zhou - first_name: Xing full_name: Zhou, Xing last_name: Zhou - first_name: Yu full_name: Zhou, Yu last_name: Zhou - first_name: Hongwei full_name: Zhu, Hongwei last_name: Zhu - first_name: Hua full_name: Zhang, Hua last_name: Zhang - first_name: Zhongfan full_name: Liu, Zhongfan last_name: Liu citation: ama: Chang C, Chen W, Chen Y, et al. Recent progress on two-dimensional materials. Acta Physico-Chimica Sinica. 2021;37(12). doi:10.3866/PKU.WHXB202108017 apa: Chang, C., Chen, W., Chen, Y., Chen, Y., Chen, Y., Ding, F., … Liu, Z. (2021). Recent progress on two-dimensional materials. Acta Physico-Chimica Sinica. Peking University. https://doi.org/10.3866/PKU.WHXB202108017 chicago: Chang, Cheng, Wei Chen, Ye Chen, Yonghua Chen, Yu Chen, Feng Ding, Chunhai Fan, et al. “Recent Progress on Two-Dimensional Materials.” Acta Physico-Chimica Sinica. Peking University, 2021. https://doi.org/10.3866/PKU.WHXB202108017. ieee: C. Chang et al., “Recent progress on two-dimensional materials,” Acta Physico-Chimica Sinica, vol. 37, no. 12. Peking University, 2021. ista: Chang C, Chen W, Chen Y, Chen Y, Chen Y, Ding F, Fan C, Fan HJ, Fan Z, Gong C, Gong Y, He Q, Hong X, Hu S, Hu W, Huang W, Huang Y, Ji W, Li D, Li LJ, Li Q, Lin L, Ling C, Liu M, Liu N, Liu Z, Loh KP, Ma J, Miao F, Peng H, Shao M, Song L, Su S, Sun S, Tan C, Tang Z, Wang D, Wang H, Wang J, Wang X, Wang X, Wee ATS, Wei Z, Wu Y, Wu ZS, Xiong J, Xiong Q, Xu W, Yin P, Zeng H, Zeng Z, Zhai T, Zhang H, Zhang H, Zhang Q, Zhang T, Zhang X, Zhao LD, Zhao M, Zhao W, Zhao Y, Zhou KG, Zhou X, Zhou Y, Zhu H, Zhang H, Liu Z. 2021. Recent progress on two-dimensional materials. Acta Physico-Chimica Sinica. 37(12), 2108017. mla: Chang, Cheng, et al. “Recent Progress on Two-Dimensional Materials.” Acta Physico-Chimica Sinica, vol. 37, no. 12, 2108017, Peking University, 2021, doi:10.3866/PKU.WHXB202108017. short: C. Chang, W. Chen, Y. Chen, Y. Chen, Y. Chen, F. Ding, C. Fan, H.J. Fan, Z. Fan, C. Gong, Y. Gong, Q. He, X. Hong, S. Hu, W. Hu, W. Huang, Y. Huang, W. Ji, D. Li, L.J. Li, Q. Li, L. Lin, C. Ling, M. Liu, N. Liu, Z. Liu, K.P. Loh, J. Ma, F. Miao, H. Peng, M. Shao, L. Song, S. Su, S. Sun, C. Tan, Z. Tang, D. Wang, H. Wang, J. Wang, X. Wang, X. Wang, A.T.S. Wee, Z. Wei, Y. Wu, Z.S. Wu, J. Xiong, Q. Xiong, W. Xu, P. Yin, H. Zeng, Z. Zeng, T. Zhai, H. Zhang, H. Zhang, Q. Zhang, T. Zhang, X. Zhang, L.D. Zhao, M. Zhao, W. Zhao, Y. Zhao, K.G. Zhou, X. Zhou, Y. Zhou, H. Zhu, H. Zhang, Z. Liu, Acta Physico-Chimica Sinica 37 (2021). date_created: 2024-01-14T23:00:58Z date_published: 2021-10-13T00:00:00Z date_updated: 2025-09-10T10:12:25Z day: '13' department: - _id: MaIb doi: 10.3866/PKU.WHXB202108017 external_id: isi: - '000731879300002' fulldoi: https://doi.org/10.3866/PKU.WHXB202108017 intvolume: ' 37' isi: 1 issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3866/PKU.WHXB202108017 month: '10' oa: 1 oa_version: Submitted Version publication: Acta Physico-Chimica Sinica publication_identifier: issn: - 1001-4861 publication_status: published publisher: Peking University quality_controlled: '1' scopus_import: '1' status: public title: Recent progress on two-dimensional materials type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 37 year: '2021' ... --- _id: '15265' abstract: - lang: eng text: 'The highly enhanced thermoelectric figure of merit, zT ≈ 2.6 at 573 K, obtained recently in Cd-doped polycrystalline AgSbTe2 by Roychowdhury et al. ( Science 2021, 371, 722) brings it to the forefront of thermoelectric and energy materials research. Ag/Sb cationic ordering in polycrystalline AgSbTe2 was a challenging issue for a long time: their ordered arrangement in the cationic sublattice in polycrystalline samples remained elusive despite multiple theoretical predictions and experimental studies. Recently, selective cation doping has been used to enhance the Ag/Sb ordering, and cation ordered nanoscale (2–4 nm) domains were observed in polycrystalline AgSbTe2, which reduce lattice thermal conductivity. The enhanced cation ordering also delocalizes disorder-induced localized electronic states, and consequently the electronic transport enhances. In this Focus Review, we provide the details of the rational design of a high-performance thermoelectric material using the recently developed atomic order–disorder optimization strategy with AgSbTe2 as an example. Atomic disorder is ubiquitous in most thermoelectric materials, and the atomic order–disorder optimization strategy applies to a large variety of thermoelectric materials.' article_processing_charge: No article_type: original author: - first_name: Tanmoy full_name: Ghosh, Tanmoy id: a5fc9bc3-feff-11ea-93fe-e8015a3c7e9d last_name: Ghosh - first_name: Subhajit full_name: Roychowdhury, Subhajit last_name: Roychowdhury - first_name: Moinak full_name: Dutta, Moinak last_name: Dutta - first_name: Kanishka full_name: Biswas, Kanishka last_name: Biswas citation: ama: 'Ghosh T, Roychowdhury S, Dutta M, Biswas K. High-performance thermoelectric energy conversion: A tale of atomic ordering in AgSbTe2. ACS Energy Letters. 2021;6(8):2825-2837. doi:10.1021/acsenergylett.1c01184' apa: 'Ghosh, T., Roychowdhury, S., Dutta, M., & Biswas, K. (2021). High-performance thermoelectric energy conversion: A tale of atomic ordering in AgSbTe2. ACS Energy Letters. American Chemical Society. https://doi.org/10.1021/acsenergylett.1c01184' chicago: 'Ghosh, Tanmoy, Subhajit Roychowdhury, Moinak Dutta, and Kanishka Biswas. “High-Performance Thermoelectric Energy Conversion: A Tale of Atomic Ordering in AgSbTe2.” ACS Energy Letters. American Chemical Society, 2021. https://doi.org/10.1021/acsenergylett.1c01184.' ieee: 'T. Ghosh, S. Roychowdhury, M. Dutta, and K. Biswas, “High-performance thermoelectric energy conversion: A tale of atomic ordering in AgSbTe2,” ACS Energy Letters, vol. 6, no. 8. American Chemical Society, pp. 2825–2837, 2021.' ista: 'Ghosh T, Roychowdhury S, Dutta M, Biswas K. 2021. High-performance thermoelectric energy conversion: A tale of atomic ordering in AgSbTe2. ACS Energy Letters. 6(8), 2825–2837.' mla: 'Ghosh, Tanmoy, et al. “High-Performance Thermoelectric Energy Conversion: A Tale of Atomic Ordering in AgSbTe2.” ACS Energy Letters, vol. 6, no. 8, American Chemical Society, 2021, pp. 2825–37, doi:10.1021/acsenergylett.1c01184.' short: T. Ghosh, S. Roychowdhury, M. Dutta, K. Biswas, ACS Energy Letters 6 (2021) 2825–2837. date_created: 2024-04-03T07:36:10Z date_published: 2021-07-21T00:00:00Z date_updated: 2024-04-29T06:56:57Z day: '21' department: - _id: MaIb doi: 10.1021/acsenergylett.1c01184 fulldoi: https://doi.org/10.1021/acsenergylett.1c01184 intvolume: ' 6' issue: '8' keyword: - Materials Chemistry - Energy Engineering and Power Technology - Fuel Technology - Renewable Energy - Sustainability and the Environment - Chemistry (miscellaneous) language: - iso: eng month: '07' oa_version: None page: 2825-2837 publication: ACS Energy Letters publication_identifier: issn: - 2380-8195 publication_status: published publisher: American Chemical Society quality_controlled: '1' status: public title: 'High-performance thermoelectric energy conversion: A tale of atomic ordering in AgSbTe2' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2021' ... --- _id: '10073' abstract: - lang: eng text: Thermoelectric materials enable the direct conversion between heat and electricity. SnTe is a promising candidate due to its high charge transport performance. Here, we prepared SnTe nanocomposites by employing an aqueous method to synthetize SnTe nanoparticles (NP), followed by a unique surface treatment prior NP consolidation. This synthetic approach allowed optimizing the charge and phonon transport synergistically. The novelty of this strategy was the use of a soluble PbS molecular complex prepared using a thiol-amine solvent mixture that upon blending is adsorbed on the SnTe NP surface. Upon consolidation with spark plasma sintering, SnTe-PbS nanocomposite is formed. The presence of PbS complexes significantly compensates for the Sn vacancy and increases the average grain size of the nanocomposite, thus improving the carrier mobility. Moreover, lattice thermal conductivity is also reduced by the Pb and S-induced mass and strain fluctuation. As a result, an enhanced ZT of ca. 0.8 is reached at 873 K. Our finding provides a novel strategy to conduct rational surface treatment on NP-based thermoelectrics. acknowledged_ssus: - _id: EM-Fac acknowledgement: "The authors thank the EMF facility in IST Austria for providing SEM and EDX measurements.\r\n" article_number: '5416' article_processing_charge: Yes article_type: original author: - first_name: Cheng full_name: Chang, Cheng id: 9E331C2E-9F27-11E9-AE48-5033E6697425 last_name: Chang orcid: 0000-0002-9515-4277 - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: Chang C, Ibáñez M. Enhanced thermoelectric performance by surface engineering in SnTe-PbS nanocomposites. Materials. 2021;14(18). doi:10.3390/ma14185416 apa: Chang, C., & Ibáñez, M. (2021). Enhanced thermoelectric performance by surface engineering in SnTe-PbS nanocomposites. Materials. MDPI. https://doi.org/10.3390/ma14185416 chicago: Chang, Cheng, and Maria Ibáñez. “Enhanced Thermoelectric Performance by Surface Engineering in SnTe-PbS Nanocomposites.” Materials. MDPI, 2021. https://doi.org/10.3390/ma14185416. ieee: C. Chang and M. Ibáñez, “Enhanced thermoelectric performance by surface engineering in SnTe-PbS nanocomposites,” Materials, vol. 14, no. 18. MDPI, 2021. ista: Chang C, Ibáñez M. 2021. Enhanced thermoelectric performance by surface engineering in SnTe-PbS nanocomposites. Materials. 14(18), 5416. mla: Chang, Cheng, and Maria Ibáñez. “Enhanced Thermoelectric Performance by Surface Engineering in SnTe-PbS Nanocomposites.” Materials, vol. 14, no. 18, 5416, MDPI, 2021, doi:10.3390/ma14185416. short: C. Chang, M. Ibáñez, Materials 14 (2021). corr_author: '1' date_created: 2021-10-03T22:01:23Z date_published: 2021-09-19T00:00:00Z date_updated: 2025-04-14T09:29:32Z day: '19' ddc: - '540' department: - _id: MaIb doi: 10.3390/ma14185416 external_id: isi: - '000700689400001' pmid: - '34576640' file: - access_level: open_access checksum: 4929dfc673a3ae77c010b6174279cc1d content_type: application/pdf creator: cchlebak date_created: 2021-10-14T11:56:39Z date_updated: 2021-10-14T11:56:39Z file_id: '10140' file_name: 2021_Materials_Chang.pdf file_size: 4404141 relation: main_file success: 1 file_date_updated: 2021-10-14T11:56:39Z fulldoi: https://doi.org/10.3390/ma14185416 has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '18' language: - iso: eng month: '09' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 9B8804FC-BA93-11EA-9121-9846C619BF3A grant_number: M02889 name: Bottom-up Engineering for Thermoelectric Applications publication: Materials publication_identifier: eissn: - 1996-1944 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Enhanced thermoelectric performance by surface engineering in SnTe-PbS nanocomposites tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 14 year: '2021' ... --- _id: '10534' abstract: - lang: eng text: For many years, fullerene derivatives have been the main n-type material of organic electronics and optoelectronics. Recently, fullerene derivatives functionalized with ethylene glycol (EG) side chains have been showing important properties such as enhanced dielectric constants, facile doping and enhanced self-assembly capabilities. Here, we have prepared field-effect transistors using a series of these fullerene derivatives equipped with EG side chains of different lengths. Transport data show the beneficial effect of increasing the EG side chain. In order to understand the material properties, full structural determination of these fullerene derivatives has been achieved by coupling the X-ray data with molecular dynamics (MD) simulations. The increase in transport properties is paired with the formation of extended layered structures, efficient molecular packing and an increase in the crystallite alignment. The layer-like structure is composed of conducting layers, containing of closely packed C60 balls approaching the inter-distance of 1 nm, that are separated by well-defined EG layers, where the EG chains are rather splayed with the chain direction almost perpendicular to the layer normal. Such a layered structure appears highly ordered and highly aligned with the C60 planes oriented parallel to the substrate in the thin film configuration. The order inside the thin film increases with the EG chain length, allowing the systems to achieve mobilities as high as 0.053 cm2 V−1 s−1. Our work elucidates the structure of these interesting semiconducting organic molecules and shows that the synergistic use of X-ray structural analysis and MD simulations is a powerful tool to identify the structure of thin organic films for optoelectronic applications. acknowledgement: J. D. gratefully acknowledges the China Scholarship Council (CSC No. 201606340158) for supporting his PhD studies. S. S. thanks J. Antoja-Lleonart for insightful discussions on simulating the X-ray diffraction patterns. Part of the work was sponsored by NWO Exact and Natural Sciences for the use of supercomputer facilities (Contract no. 17197 7095). Regarding S. S., R. A., R. W. A. H., J. C. H., and M. A. L., this is a publication by the FOM Focus Group “Next Generation Organic Photovoltaics”, participating in the Dutch Institute for Fundamental Energy Research (DIFFER). The ESRF is acknowledged for providing the beamtime. J. D. and G. P. are grateful to the BM26B staff for their great support during the beamtime. M. A. L., D. M. B. are grateful for the financial support of the European Research Council via a Starting Grant (HySPOD, No. 306983). article_processing_charge: No article_type: original author: - first_name: Jingjin full_name: Dong, Jingjin last_name: Dong - first_name: Selim full_name: Sami, Selim last_name: Sami - first_name: Daniel full_name: Balazs, Daniel id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E last_name: Balazs orcid: 0000-0001-7597-043X - first_name: Riccardo full_name: Alessandri, Riccardo last_name: Alessandri - first_name: Fatimeh full_name: Jahani, Fatimeh last_name: Jahani - first_name: Li full_name: Qiu, Li last_name: Qiu - first_name: Siewert J. full_name: Marrink, Siewert J. last_name: Marrink - first_name: Remco W.A. full_name: Havenith, Remco W.A. last_name: Havenith - first_name: Jan C. full_name: Hummelen, Jan C. last_name: Hummelen - first_name: Maria A. full_name: Loi, Maria A. last_name: Loi - first_name: Giuseppe full_name: Portale, Giuseppe last_name: Portale citation: ama: 'Dong J, Sami S, Balazs D, et al. Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. 2021;9(45):16217-16225. doi:10.1039/d1tc02753k' apa: 'Dong, J., Sami, S., Balazs, D., Alessandri, R., Jahani, F., Qiu, L., … Portale, G. (2021). Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. Royal Society of Chemistry. https://doi.org/10.1039/d1tc02753k' chicago: 'Dong, Jingjin, Selim Sami, Daniel Balazs, Riccardo Alessandri, Fatimeh Jahani, Li Qiu, Siewert J. Marrink, et al. “Fullerene Derivatives with Oligoethylene-Glycol Side Chains: An Investigation on the Origin of Their Outstanding Transport Properties.” Journal of Materials Chemistry C. Royal Society of Chemistry, 2021. https://doi.org/10.1039/d1tc02753k.' ieee: 'J. Dong et al., “Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties,” Journal of Materials Chemistry C, vol. 9, no. 45. Royal Society of Chemistry, pp. 16217–16225, 2021.' ista: 'Dong J, Sami S, Balazs D, Alessandri R, Jahani F, Qiu L, Marrink SJ, Havenith RWA, Hummelen JC, Loi MA, Portale G. 2021. Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. 9(45), 16217–16225.' mla: 'Dong, Jingjin, et al. “Fullerene Derivatives with Oligoethylene-Glycol Side Chains: An Investigation on the Origin of Their Outstanding Transport Properties.” Journal of Materials Chemistry C, vol. 9, no. 45, Royal Society of Chemistry, 2021, pp. 16217–25, doi:10.1039/d1tc02753k.' short: J. Dong, S. Sami, D. Balazs, R. Alessandri, F. Jahani, L. Qiu, S.J. Marrink, R.W.A. Havenith, J.C. Hummelen, M.A. Loi, G. Portale, Journal of Materials Chemistry C 9 (2021) 16217–16225. date_created: 2021-12-12T23:01:27Z date_published: 2021-12-07T00:00:00Z date_updated: 2023-08-17T06:18:44Z day: '07' ddc: - '540' department: - _id: MaIb doi: 10.1039/d1tc02753k external_id: isi: - '000688135700001' file: - access_level: open_access checksum: 6b73c214ce54a6894a5854b4364413d7 content_type: application/pdf creator: cchlebak date_created: 2021-12-13T09:24:42Z date_updated: 2021-12-13T09:24:42Z file_id: '10538' file_name: 2021_JMaterChemC_Dong.pdf file_size: 4979390 relation: main_file success: 1 file_date_updated: 2021-12-13T09:24:42Z fulldoi: https://doi.org/10.1039/d1tc02753k has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '45' language: - iso: eng month: '12' oa: 1 oa_version: Published Version page: 16217-16225 publication: Journal of Materials Chemistry C publication_identifier: eissn: - 2050-7526 issn: - 2050-7534 publication_status: published publisher: Royal Society of Chemistry quality_controlled: '1' scopus_import: '1' status: public title: 'Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 9 year: '2021' ... --- _id: '10806' abstract: - lang: eng text: Ligands are a fundamental part of nanocrystals. They control and direct nanocrystal syntheses and provide colloidal stability. Bound ligands also affect the nanocrystals’ chemical reactivity and electronic structure. Surface chemistry is thus crucial to understand nanocrystal properties and functionality. Here, we investigate the synthesis of metal oxide nanocrystals (CeO2-x, ZnO, and NiO) from metal nitrate precursors, in the presence of oleylamine ligands. Surprisingly, the nanocrystals are capped exclusively with a fatty acid instead of oleylamine. Analysis of the reaction mixtures with nuclear magnetic resonance spectroscopy revealed several reaction byproducts and intermediates that are common to the decomposition of Ce, Zn, Ni, and Zr nitrate precursors. Our evidence supports the oxidation of alkylamine and formation of a carboxylic acid, thus unraveling this counterintuitive surface chemistry. acknowledgement: 'This work was financially supported by IST Austria and the Werner Siemens Foundation. M.C. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. The work was also financially supported by University of Basel, SNSF NCCR Molecular Systems Engineering (project number: 182895) and SNSF R’equip (project number: 189622). J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia program and MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128 projects.' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Mariano full_name: Calcabrini, Mariano id: 45D7531A-F248-11E8-B48F-1D18A9856A87 last_name: Calcabrini orcid: 0000-0003-4566-5877 - first_name: Dietger full_name: Van den Eynden, Dietger last_name: Van den Eynden - first_name: Sergi full_name: Sanchez Ribot, Sergi id: ddae5a59-f6e0-11ea-865d-d9dc61e77a2a last_name: Sanchez Ribot - first_name: Rohan full_name: Pokratath, Rohan last_name: Pokratath - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Jonathan full_name: De Roo, Jonathan last_name: De Roo - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, et al. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. 2021;1(11):1898-1903. doi:10.1021/jacsau.1c00349' apa: 'Calcabrini, M., Van den Eynden, D., Sanchez Ribot, S., Pokratath, R., Llorca, J., De Roo, J., & Ibáñez, M. (2021). Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. American Chemical Society. https://doi.org/10.1021/jacsau.1c00349' chicago: 'Calcabrini, Mariano, Dietger Van den Eynden, Sergi Sanchez Ribot, Rohan Pokratath, Jordi Llorca, Jonathan De Roo, and Maria Ibáñez. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” JACS Au. American Chemical Society, 2021. https://doi.org/10.1021/jacsau.1c00349.' ieee: 'M. Calcabrini et al., “Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate,” JACS Au, vol. 1, no. 11. American Chemical Society, pp. 1898–1903, 2021.' ista: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, Pokratath R, Llorca J, De Roo J, Ibáñez M. 2021. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. 1(11), 1898–1903.' mla: 'Calcabrini, Mariano, et al. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” JACS Au, vol. 1, no. 11, American Chemical Society, 2021, pp. 1898–903, doi:10.1021/jacsau.1c00349.' short: M. Calcabrini, D. Van den Eynden, S. Sanchez Ribot, R. Pokratath, J. Llorca, J. De Roo, M. Ibáñez, JACS Au 1 (2021) 1898–1903. corr_author: '1' date_created: 2022-03-02T15:24:16Z date_published: 2021-11-22T00:00:00Z date_updated: 2026-04-07T13:26:13Z day: '22' ddc: - '540' department: - _id: MaIb doi: 10.1021/jacsau.1c00349 ec_funded: 1 file: - access_level: open_access checksum: 1c66a35369e911312a359111420318a9 content_type: application/pdf creator: cchlebak date_created: 2022-03-02T15:33:18Z date_updated: 2022-03-02T15:33:18Z file_id: '10807' file_name: 2021_JACSAu_Calcabrini.pdf file_size: 1257973 relation: main_file success: 1 file_date_updated: 2022-03-02T15:33:18Z fulldoi: https://doi.org/10.1021/jacsau.1c00349 has_accepted_license: '1' intvolume: ' 1' issue: '11' keyword: - general medicine language: - iso: eng month: '11' oa: 1 oa_version: Published Version page: 1898-1903 project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery' - _id: B67AFEDC-15C9-11EA-A837-991A96BB2854 name: IST Austria Open Access Fund publication: JACS Au publication_identifier: eissn: - 2691-3704 issn: - 2691-3704 publication_status: published publisher: American Chemical Society quality_controlled: '1' related_material: link: - relation: earlier_version url: https://doi.org/10.26434/chemrxiv-2021-cn2fr record: - id: '12885' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 1 year: '2021' ... --- _id: '9118' abstract: - lang: eng text: Cesium lead halides have intrinsically unstable crystal lattices and easily transform within perovskite and nonperovskite structures. In this work, we explore the conversion of the perovskite CsPbBr3 into Cs4PbBr6 in the presence of PbS at 450 °C to produce doped nanocrystal-based composites with embedded Cs4PbBr6 nanoprecipitates. We show that PbBr2 is extracted from CsPbBr3 and diffuses into the PbS lattice with a consequent increase in the concentration of free charge carriers. This new doping strategy enables the adjustment of the density of charge carriers between 1019 and 1020 cm–3, and it may serve as a general strategy for doping other nanocrystal-based semiconductors. acknowledgement: "M.C. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. ICN2\r\nacknowledges funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 823717 − ESTEEM3. M.V.K. acknowledges the support by the European Research Council under the Horizon 2020 Framework Program (ERC Consolidator Grant SCALEHALO\r\nGrant Agreement No. 819740) and by FET-OPEN project no. 862656 (DROP-IT)." article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Mariano full_name: Calcabrini, Mariano id: 45D7531A-F248-11E8-B48F-1D18A9856A87 last_name: Calcabrini orcid: 0000-0003-4566-5877 - first_name: Aziz full_name: Genc, Aziz last_name: Genc - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Tobias full_name: Kleinhanns, Tobias id: 8BD9DE16-AB3C-11E9-9C8C-2A03E6697425 last_name: Kleinhanns orcid: 0000-0003-1537-7436 - first_name: Seungho full_name: Lee, Seungho id: BB243B88-D767-11E9-B658-BC13E6697425 last_name: Lee orcid: 0000-0002-6962-8598 - first_name: Dmitry N. full_name: Dirin, Dmitry N. last_name: Dirin - first_name: Quinten A. full_name: Akkerman, Quinten A. last_name: Akkerman - first_name: Maksym V. full_name: Kovalenko, Maksym V. last_name: Kovalenko - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: Calcabrini M, Genc A, Liu Y, et al. Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites. ACS Energy Letters. 2021;6(2):581-587. doi:10.1021/acsenergylett.0c02448 apa: Calcabrini, M., Genc, A., Liu, Y., Kleinhanns, T., Lee, S., Dirin, D. N., … Ibáñez, M. (2021). Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites. ACS Energy Letters. American Chemical Society. https://doi.org/10.1021/acsenergylett.0c02448 chicago: Calcabrini, Mariano, Aziz Genc, Yu Liu, Tobias Kleinhanns, Seungho Lee, Dmitry N. Dirin, Quinten A. Akkerman, Maksym V. Kovalenko, Jordi Arbiol, and Maria Ibáñez. “Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites.” ACS Energy Letters. American Chemical Society, 2021. https://doi.org/10.1021/acsenergylett.0c02448. ieee: M. Calcabrini et al., “Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites,” ACS Energy Letters, vol. 6, no. 2. American Chemical Society, pp. 581–587, 2021. ista: Calcabrini M, Genc A, Liu Y, Kleinhanns T, Lee S, Dirin DN, Akkerman QA, Kovalenko MV, Arbiol J, Ibáñez M. 2021. Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites. ACS Energy Letters. 6(2), 581–587. mla: Calcabrini, Mariano, et al. “Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites.” ACS Energy Letters, vol. 6, no. 2, American Chemical Society, 2021, pp. 581–87, doi:10.1021/acsenergylett.0c02448. short: M. Calcabrini, A. Genc, Y. Liu, T. Kleinhanns, S. Lee, D.N. Dirin, Q.A. Akkerman, M.V. Kovalenko, J. Arbiol, M. Ibáñez, ACS Energy Letters 6 (2021) 581–587. date_created: 2021-02-14T23:01:14Z date_published: 2021-01-20T00:00:00Z date_updated: 2026-04-07T13:26:13Z day: '20' ddc: - '540' department: - _id: MaIb doi: 10.1021/acsenergylett.0c02448 ec_funded: 1 external_id: isi: - '000619803400036' pmid: - '33614964' file: - access_level: open_access checksum: 6fa7374bf8b95fdfe6e6c595322a6689 content_type: application/pdf creator: dernst date_created: 2021-02-17T07:36:52Z date_updated: 2021-02-17T07:36:52Z file_id: '9155' file_name: 2021_ACSEnergyLetters_Calcabrini.pdf file_size: 5071201 relation: main_file success: 1 file_date_updated: 2021-02-17T07:36:52Z fulldoi: https://doi.org/10.1021/acsenergylett.0c02448 has_accepted_license: '1' intvolume: ' 6' isi: 1 issue: '2' language: - iso: eng month: '01' oa: 1 oa_version: Published Version page: 581-587 pmid: 1 project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: ACS Energy Letters publication_identifier: eissn: - 2380-8195 publication_status: published publisher: American Chemical Society quality_controlled: '1' related_material: record: - id: '12885' relation: dissertation_contains status: public scopus_import: '1' status: public title: Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2021' ... --- _id: '9206' abstract: - lang: eng text: 'The precise engineering of thermoelectric materials using nanocrystals as their building blocks has proven to be an excellent strategy to increase energy conversion efficiency. Here we present a synthetic route to produce Sb-doped PbS colloidal nanoparticles. These nanoparticles are then consolidated into nanocrystalline PbS:Sb using spark plasma sintering. We demonstrate that the introduction of Sb significantly influences the size, geometry, crystal lattice and especially the carrier concentration of PbS. The increase of charge carrier concentration achieved with the introduction of Sb translates into an increase of the electrical and thermal conductivities and a decrease of the Seebeck coefficient. Overall, PbS:Sb nanomaterial were characterized by two-fold higher thermoelectric figures of merit than undoped PbS. ' acknowledgement: "This work was supported by European Regional Development Funds and the Framework 7\r\nprogram under project UNION (FP7-NMP 310250). GSN acknowledges support from the US National Science Foundation under grant No. DMR-1748188. DC acknowledges support from COLCIENCIAS under project 120480863414. " article_number: '853' article_processing_charge: No article_type: original author: - first_name: Doris full_name: Cadavid, Doris last_name: Cadavid - first_name: Kaya full_name: Wei, Kaya last_name: Wei - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Aziz full_name: Genç, Aziz last_name: Genç - first_name: Taisiia full_name: Berestok, Taisiia last_name: Berestok - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Alexey full_name: Shavel, Alexey last_name: Shavel - first_name: George S. full_name: Nolas, George S. last_name: Nolas - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Cadavid D, Wei K, Liu Y, et al. Synthesis, bottom up assembly and thermoelectric properties of Sb-doped PbS nanocrystal building blocks. Materials. 2021;14(4). doi:10.3390/ma14040853 apa: Cadavid, D., Wei, K., Liu, Y., Zhang, Y., Li, M., Genç, A., … Cabot, A. (2021). Synthesis, bottom up assembly and thermoelectric properties of Sb-doped PbS nanocrystal building blocks. Materials. MDPI. https://doi.org/10.3390/ma14040853 chicago: Cadavid, Doris, Kaya Wei, Yu Liu, Yu Zhang, Mengyao Li, Aziz Genç, Taisiia Berestok, et al. “Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks.” Materials. MDPI, 2021. https://doi.org/10.3390/ma14040853. ieee: D. Cadavid et al., “Synthesis, bottom up assembly and thermoelectric properties of Sb-doped PbS nanocrystal building blocks,” Materials, vol. 14, no. 4. MDPI, 2021. ista: Cadavid D, Wei K, Liu Y, Zhang Y, Li M, Genç A, Berestok T, Ibáñez M, Shavel A, Nolas GS, Cabot A. 2021. Synthesis, bottom up assembly and thermoelectric properties of Sb-doped PbS nanocrystal building blocks. Materials. 14(4), 853. mla: Cadavid, Doris, et al. “Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks.” Materials, vol. 14, no. 4, 853, MDPI, 2021, doi:10.3390/ma14040853. short: D. Cadavid, K. Wei, Y. Liu, Y. Zhang, M. Li, A. Genç, T. Berestok, M. Ibáñez, A. Shavel, G.S. Nolas, A. Cabot, Materials 14 (2021). date_created: 2021-02-28T23:01:24Z date_published: 2021-02-10T00:00:00Z date_updated: 2025-06-12T06:35:03Z day: '10' ddc: - '540' department: - _id: MaIb doi: 10.3390/ma14040853 external_id: isi: - '000624094100001' pmid: - '33578981' file: - access_level: open_access checksum: 76d6c7f97b810ce504ab151c9bf3524e content_type: application/pdf creator: dernst date_created: 2021-03-03T07:32:01Z date_updated: 2021-03-03T07:32:01Z file_id: '9218' file_name: 2021_Materials_Cadavid.pdf file_size: 2722517 relation: main_file success: 1 file_date_updated: 2021-03-03T07:32:01Z fulldoi: https://doi.org/10.3390/ma14040853 has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '4' language: - iso: eng month: '02' oa: 1 oa_version: Published Version pmid: 1 publication: Materials publication_identifier: eissn: - 1996-1944 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Synthesis, bottom up assembly and thermoelectric properties of Sb-doped PbS nanocrystal building blocks tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2021' ... --- _id: '9304' abstract: - lang: eng text: The high processing cost, poor mechanical properties and moderate performance of Bi2Te3–based alloys used in thermoelectric devices limit the cost-effectiveness of this energy conversion technology. Towards solving these current challenges, in the present work, we detail a low temperature solution-based approach to produce Bi2Te3-Cu2-xTe nanocomposites with improved thermoelectric performance. Our approach consists in combining proper ratios of colloidal nanoparticles and to consolidate the resulting mixture into nanocomposites using a hot press. The transport properties of the nanocomposites are characterized and compared with those of pure Bi2Te3 nanomaterials obtained following the same procedure. In contrast with most previous works, the presence of Cu2-xTe nanodomains does not result in a significant reduction of the lattice thermal conductivity of the reference Bi2Te3 nanomaterial, which is already very low. However, the introduction of Cu2-xTe yields a nearly threefold increase of the power factor associated to a simultaneous increase of the Seebeck coefficient and electrical conductivity at temperatures above 400 K. Taking into account the band alignment of the two materials, we rationalize this increase by considering that Cu2-xTe nanostructures, with a relatively low electron affinity, are able to inject electrons into Bi2Te3, enhancing in this way its electrical conductivity. The simultaneous increase of the Seebeck coefficient is related to the energy filtering of charge carriers at energy barriers within Bi2Te3 domains associated with the accumulation of electrons in regions nearby a Cu2-xTe/Bi2Te3 heterojunction. Overall, with the incorporation of a proper amount of Cu2-xTe nanoparticles, we demonstrate a 250% improvement of the thermoelectric figure of merit of Bi2Te3. acknowledgement: "This work was supported by the European Regional Development Funds and by the Generalitat de Catalunya through the project 2017SGR1246. Y.Z, C.X, M.L, K.X and X.H thank the China Scholarship Council for the scholarship support. MI acknowledges financial support from IST Austria. YL acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. ICN2\r\nacknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from the Spanish MINECO (grant no. SEV-2017-0706) and is funded by the CERCA Program/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program." article_number: '129374' article_processing_charge: No article_type: original author: - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Congcong full_name: Xing, Congcong last_name: Xing - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Ke full_name: Xiao, Ke last_name: Xiao - first_name: Pablo full_name: Guardia, Pablo last_name: Guardia - first_name: Seungho full_name: Lee, Seungho id: BB243B88-D767-11E9-B658-BC13E6697425 last_name: Lee orcid: 0000-0002-6962-8598 - first_name: Xu full_name: Han, Xu last_name: Han - first_name: Ahmad full_name: Moghaddam, Ahmad last_name: Moghaddam - first_name: Joan J full_name: Roa, Joan J last_name: Roa - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Kai full_name: Pan, Kai last_name: Pan - first_name: Mirko full_name: Prato, Mirko last_name: Prato - first_name: Ying full_name: Xie, Ying last_name: Xie - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Zhang Y, Xing C, Liu Y, et al. Influence of copper telluride nanodomains on the transport properties of n-type bismuth telluride. Chemical Engineering Journal. 2021;418(8). doi:10.1016/j.cej.2021.129374 apa: Zhang, Y., Xing, C., Liu, Y., Li, M., Xiao, K., Guardia, P., … Cabot, A. (2021). Influence of copper telluride nanodomains on the transport properties of n-type bismuth telluride. Chemical Engineering Journal. Elsevier. https://doi.org/10.1016/j.cej.2021.129374 chicago: Zhang, Yu, Congcong Xing, Yu Liu, Mengyao Li, Ke Xiao, Pablo Guardia, Seungho Lee, et al. “Influence of Copper Telluride Nanodomains on the Transport Properties of N-Type Bismuth Telluride.” Chemical Engineering Journal. Elsevier, 2021. https://doi.org/10.1016/j.cej.2021.129374. ieee: Y. Zhang et al., “Influence of copper telluride nanodomains on the transport properties of n-type bismuth telluride,” Chemical Engineering Journal, vol. 418, no. 8. Elsevier, 2021. ista: Zhang Y, Xing C, Liu Y, Li M, Xiao K, Guardia P, Lee S, Han X, Moghaddam A, Roa JJ, Arbiol J, Ibáñez M, Pan K, Prato M, Xie Y, Cabot A. 2021. Influence of copper telluride nanodomains on the transport properties of n-type bismuth telluride. Chemical Engineering Journal. 418(8), 129374. mla: Zhang, Yu, et al. “Influence of Copper Telluride Nanodomains on the Transport Properties of N-Type Bismuth Telluride.” Chemical Engineering Journal, vol. 418, no. 8, 129374, Elsevier, 2021, doi:10.1016/j.cej.2021.129374. short: Y. Zhang, C. Xing, Y. Liu, M. Li, K. Xiao, P. Guardia, S. Lee, X. Han, A. Moghaddam, J.J. Roa, J. Arbiol, M. Ibáñez, K. Pan, M. Prato, Y. Xie, A. Cabot, Chemical Engineering Journal 418 (2021). date_created: 2021-04-04T22:01:20Z date_published: 2021-08-15T00:00:00Z date_updated: 2025-04-14T07:43:52Z day: '15' department: - _id: MaIb doi: 10.1016/j.cej.2021.129374 ec_funded: 1 external_id: isi: - '000655672000005' fulldoi: https://doi.org/10.1016/j.cej.2021.129374 intvolume: ' 418' isi: 1 issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://ddd.uab.cat/record/271949 month: '08' oa: 1 oa_version: Submitted Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Chemical Engineering Journal publication_identifier: issn: - 1385-8947 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Influence of copper telluride nanodomains on the transport properties of n-type bismuth telluride type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 418 year: '2021' ... --- _id: '9305' abstract: - lang: eng text: Copper chalcogenides are outstanding thermoelectric materials for applications in the medium-high temperature range. Among different chalcogenides, while Cu2−xSe is characterized by higher thermoelectric figures of merit, Cu2−xS provides advantages in terms of low cost and element abundance. In the present work, we investigate the effect of different dopants to enhance the Cu2−xS performance and also its thermal stability. Among the tested options, Pb-doped Cu2−xS shows the highest improvement in stability against sulfur volatilization. Additionally, Pb incorporation allows tuning charge carrier concentration, which enables a significant improvement of the power factor. We demonstrate here that the introduction of an optimal additive amount of just 0.3% results in a threefold increase of the power factor in the middle-temperature range (500–800 K) and a record dimensionless thermoelectric figure of merit above 2 at 880 K. acknowledgement: This work was supported by the European Regional Development Fund and by the Spanish Ministerio de Economía y Competitividad through the project SEHTOP (ENE2016-77798-C4-3-R). MI acknowledges financial support from IST Austria. YL acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. YZ, CX, XW, KX and TZ thank the China Scholarship Council for the scholarship support. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from the Spanish MINECO (grant no. SEV-2017-0706) and is funded by the CERCA program/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. M.C.S. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 754510 (PROBIST) and the Severo Ochoa programme. P.G. acknowledges financial support from the Spanish government (MICIU) through the RTI2018-102006-J-I00 project and the Catalan Agency of Competitiveness (ACCIO) through the TecnioSpring+ Marie Sklodowska-Curie action TECSPR16-1-0082. YZ and CX contributed equally to this work. article_number: '105991' article_processing_charge: No article_type: original author: - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Congcong full_name: Xing, Congcong last_name: Xing - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Maria Chiara full_name: Spadaro, Maria Chiara last_name: Spadaro - first_name: Xiang full_name: Wang, Xiang last_name: Wang - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Ke full_name: Xiao, Ke last_name: Xiao - first_name: Ting full_name: Zhang, Ting last_name: Zhang - first_name: Pablo full_name: Guardia, Pablo last_name: Guardia - first_name: Khak Ho full_name: Lim, Khak Ho last_name: Lim - first_name: Ahmad Ostovari full_name: Moghaddam, Ahmad Ostovari last_name: Moghaddam - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Zhang Y, Xing C, Liu Y, et al. Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. 2021;85(7). doi:10.1016/j.nanoen.2021.105991 apa: Zhang, Y., Xing, C., Liu, Y., Spadaro, M. C., Wang, X., Li, M., … Cabot, A. (2021). Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. Elsevier. https://doi.org/10.1016/j.nanoen.2021.105991 chicago: Zhang, Yu, Congcong Xing, Yu Liu, Maria Chiara Spadaro, Xiang Wang, Mengyao Li, Ke Xiao, et al. “Doping-Mediated Stabilization of Copper Vacancies to Promote Thermoelectric Properties of Cu2-XS.” Nano Energy. Elsevier, 2021. https://doi.org/10.1016/j.nanoen.2021.105991. ieee: Y. Zhang et al., “Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS,” Nano Energy, vol. 85, no. 7. Elsevier, 2021. ista: Zhang Y, Xing C, Liu Y, Spadaro MC, Wang X, Li M, Xiao K, Zhang T, Guardia P, Lim KH, Moghaddam AO, Llorca J, Arbiol J, Ibáñez M, Cabot A. 2021. Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. 85(7), 105991. mla: Zhang, Yu, et al. “Doping-Mediated Stabilization of Copper Vacancies to Promote Thermoelectric Properties of Cu2-XS.” Nano Energy, vol. 85, no. 7, 105991, Elsevier, 2021, doi:10.1016/j.nanoen.2021.105991. short: Y. Zhang, C. Xing, Y. Liu, M.C. Spadaro, X. Wang, M. Li, K. Xiao, T. Zhang, P. Guardia, K.H. Lim, A.O. Moghaddam, J. Llorca, J. Arbiol, M. Ibáñez, A. Cabot, Nano Energy 85 (2021). corr_author: '1' date_created: 2021-04-04T22:01:21Z date_published: 2021-07-01T00:00:00Z date_updated: 2025-04-14T07:43:52Z day: '01' department: - _id: MaIb doi: 10.1016/j.nanoen.2021.105991 ec_funded: 1 external_id: isi: - '000663442200004' fulldoi: https://doi.org/10.1016/j.nanoen.2021.105991 intvolume: ' 85' isi: 1 issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://ddd.uab.cat/record/271947 month: '07' oa: 1 oa_version: Submitted Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Nano Energy publication_identifier: issn: - 2211-2855 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 85 year: '2021' ... --- _id: '9626' abstract: - lang: eng text: SnSe, a wide-bandgap semiconductor, has attracted significant attention from the thermoelectric (TE) community due to its outstanding TE performance deriving from the ultralow thermal conductivity and advantageous electronic structures. Here, we promoted the TE performance of n-type SnSe polycrystals through bandgap engineering and vacancy compensation. We found that PbTe can significantly reduce the wide bandgap of SnSe to reduce the impurity transition energy, largely enhancing the carrier concentration. Also, PbTe-induced crystal symmetry promotion increases the carrier mobility, preserving large Seebeck coefficient. Consequently, a maximum ZT of ∼1.4 at 793 K is obtained in Br doped SnSe–13%PbTe. Furthermore, we found that extra Sn in n-type SnSe can compensate for the intrinsic Sn vacancies and form electron donor-like metallic Sn nanophases. The Sn nanophases near the grain boundary could also reduce the intergrain energy barrier which largely enhances the carrier mobility. As a result, a maximum ZT value of ∼1.7 at 793 K and an average ZT (ZTave) of ∼0.58 in 300–793 K are achieved in Br doped Sn1.08Se–13%PbTe. Our findings provide a novel strategy to promote the TE performance in wide-bandgap semiconductors. acknowledgement: This work was supported by National Natural Science Foundation of China (51772012), National Key Research and Development Program of China (2018YFA0702100 and 2018YFB0703600), the Beijing Natural Science Foundation (JQ18004). This work was also supported by Lise Meitner Project (M2889-N) and the National Postdoctoral Program for Innovative Talents (BX20200028). L.D.Z. appreciates the support of the High Performance Computing (HPC) resources at Beihang University, the National Science Fund for Distinguished Young Scholars (51925101), and center for High Pressure Science and Technology Advanced Research (HPSTAR) for SEM measurements. article_number: '100452' article_processing_charge: No article_type: original author: - first_name: Lizhong full_name: Su, Lizhong last_name: Su - first_name: Tao full_name: Hong, Tao last_name: Hong - first_name: Dongyang full_name: Wang, Dongyang last_name: Wang - first_name: Sining full_name: Wang, Sining last_name: Wang - first_name: Bingchao full_name: Qin, Bingchao last_name: Qin - first_name: Mengmeng full_name: Zhang, Mengmeng last_name: Zhang - first_name: Xiang full_name: Gao, Xiang last_name: Gao - first_name: Cheng full_name: Chang, Cheng id: 9E331C2E-9F27-11E9-AE48-5033E6697425 last_name: Chang orcid: 0000-0002-9515-4277 - first_name: Li Dong full_name: Zhao, Li Dong last_name: Zhao citation: ama: Su L, Hong T, Wang D, et al. Realizing high doping efficiency and thermoelectric performance in n-type SnSe polycrystals via bandgap engineering and vacancy compensation. Materials Today Physics. 2021;20. doi:10.1016/j.mtphys.2021.100452 apa: Su, L., Hong, T., Wang, D., Wang, S., Qin, B., Zhang, M., … Zhao, L. D. (2021). Realizing high doping efficiency and thermoelectric performance in n-type SnSe polycrystals via bandgap engineering and vacancy compensation. Materials Today Physics. Elsevier. https://doi.org/10.1016/j.mtphys.2021.100452 chicago: Su, Lizhong, Tao Hong, Dongyang Wang, Sining Wang, Bingchao Qin, Mengmeng Zhang, Xiang Gao, Cheng Chang, and Li Dong Zhao. “Realizing High Doping Efficiency and Thermoelectric Performance in N-Type SnSe Polycrystals via Bandgap Engineering and Vacancy Compensation.” Materials Today Physics. Elsevier, 2021. https://doi.org/10.1016/j.mtphys.2021.100452. ieee: L. Su et al., “Realizing high doping efficiency and thermoelectric performance in n-type SnSe polycrystals via bandgap engineering and vacancy compensation,” Materials Today Physics, vol. 20. Elsevier, 2021. ista: Su L, Hong T, Wang D, Wang S, Qin B, Zhang M, Gao X, Chang C, Zhao LD. 2021. Realizing high doping efficiency and thermoelectric performance in n-type SnSe polycrystals via bandgap engineering and vacancy compensation. Materials Today Physics. 20, 100452. mla: Su, Lizhong, et al. “Realizing High Doping Efficiency and Thermoelectric Performance in N-Type SnSe Polycrystals via Bandgap Engineering and Vacancy Compensation.” Materials Today Physics, vol. 20, 100452, Elsevier, 2021, doi:10.1016/j.mtphys.2021.100452. short: L. Su, T. Hong, D. Wang, S. Wang, B. Qin, M. Zhang, X. Gao, C. Chang, L.D. Zhao, Materials Today Physics 20 (2021). corr_author: '1' date_created: 2021-07-04T22:01:24Z date_published: 2021-06-03T00:00:00Z date_updated: 2024-10-09T21:00:40Z day: '03' department: - _id: MaIb doi: 10.1016/j.mtphys.2021.100452 external_id: isi: - '000703159600010' fulldoi: https://doi.org/10.1016/j.mtphys.2021.100452 intvolume: ' 20' isi: 1 language: - iso: eng month: '06' oa_version: None publication: Materials Today Physics publication_identifier: eissn: - 2542-5293 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Realizing high doping efficiency and thermoelectric performance in n-type SnSe polycrystals via bandgap engineering and vacancy compensation type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 20 year: '2021' ... --- _id: '9829' abstract: - lang: eng text: In 2020, many in-person scientific events were canceled due to the COVID-19 pandemic, creating a vacuum in networking and knowledge exchange between scientists. To fill this void in scientific communication, a group of early career nanocrystal enthusiasts launched the virtual seminar series, News in Nanocrystals, in the summer of 2020. By the end of the year, the series had attracted over 850 participants from 46 countries. In this Nano Focus, we describe the process of organizing the News in Nanocrystals seminar series; discuss its growth, emphasizing what the organizers have learned in terms of diversity and accessibility; and provide an outlook for the next steps and future opportunities. This summary and analysis of experiences and learned lessons are intended to inform the broader scientific community, especially those who are looking for avenues to continue fostering discussion and scientific engagement virtually, both during the pandemic and after. acknowledgement: K. E. Shulenberger, M. D. Klein, T. Šverko, and H. R. Keller would like to thank Professors Moungi Bawendi (MIT) and Gordana Dukovic (CU Boulder) for their feedback and support of the News in Nanocrystals initiative. The authors thank Madison Jilek (CU Boulder) and Dhananjeya Kumaar (ETH Zurich) for their help in the organization of the seminar, and Professors Brandi Cossairt (University of Washington) and Gordana Dukovic for their feedback on an earlier version of this manuscript. The authors thank all the seminar speakers and attendees for their interest and continuing participation in the seminar series. article_processing_charge: No article_type: original author: - first_name: Dmitry full_name: Baranov, Dmitry last_name: Baranov - first_name: Tara full_name: Šverko, Tara last_name: Šverko - first_name: Taylor full_name: Moot, Taylor last_name: Moot - first_name: Helena R. full_name: Keller, Helena R. last_name: Keller - first_name: Megan D. full_name: Klein, Megan D. last_name: Klein - first_name: E. K. full_name: Vishnu, E. K. last_name: Vishnu - first_name: Daniel full_name: Balazs, Daniel id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E last_name: Balazs orcid: 0000-0001-7597-043X - first_name: Katherine E. full_name: Shulenberger, Katherine E. last_name: Shulenberger citation: ama: 'Baranov D, Šverko T, Moot T, et al. News in Nanocrystals seminar: Self-assembly of early career researchers toward globally accessible nanoscience. ACS Nano. 2021;15(7):10743–10747. doi:10.1021/acsnano.1c03276' apa: 'Baranov, D., Šverko, T., Moot, T., Keller, H. R., Klein, M. D., Vishnu, E. K., … Shulenberger, K. E. (2021). News in Nanocrystals seminar: Self-assembly of early career researchers toward globally accessible nanoscience. ACS Nano. American Chemical Society. https://doi.org/10.1021/acsnano.1c03276' chicago: 'Baranov, Dmitry, Tara Šverko, Taylor Moot, Helena R. Keller, Megan D. Klein, E. K. Vishnu, Daniel Balazs, and Katherine E. Shulenberger. “News in Nanocrystals Seminar: Self-Assembly of Early Career Researchers toward Globally Accessible Nanoscience.” ACS Nano. American Chemical Society, 2021. https://doi.org/10.1021/acsnano.1c03276.' ieee: 'D. Baranov et al., “News in Nanocrystals seminar: Self-assembly of early career researchers toward globally accessible nanoscience,” ACS Nano, vol. 15, no. 7. American Chemical Society, pp. 10743–10747, 2021.' ista: 'Baranov D, Šverko T, Moot T, Keller HR, Klein MD, Vishnu EK, Balazs D, Shulenberger KE. 2021. News in Nanocrystals seminar: Self-assembly of early career researchers toward globally accessible nanoscience. ACS Nano. 15(7), 10743–10747.' mla: 'Baranov, Dmitry, et al. “News in Nanocrystals Seminar: Self-Assembly of Early Career Researchers toward Globally Accessible Nanoscience.” ACS Nano, vol. 15, no. 7, American Chemical Society, 2021, pp. 10743–10747, doi:10.1021/acsnano.1c03276.' short: D. Baranov, T. Šverko, T. Moot, H.R. Keller, M.D. Klein, E.K. Vishnu, D. Balazs, K.E. Shulenberger, ACS Nano 15 (2021) 10743–10747. date_created: 2021-08-08T22:01:31Z date_published: 2021-07-06T00:00:00Z date_updated: 2026-06-18T19:58:29Z day: '06' ddc: - '540' department: - _id: MaIb doi: 10.1021/acsnano.1c03276 external_id: isi: - '000679406500002' pmid: - '34228432' fulldoi: https://doi.org/10.1021/acsnano.1c03276 intvolume: ' 15' isi: 1 issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1021/acsnano.1c03276 month: '07' oa: 1 oa_version: Published Version page: 10743–10747 pmid: 1 publication: ACS Nano publication_identifier: eissn: - 1936-086X issn: - 1936-0851 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: 'News in Nanocrystals seminar: Self-assembly of early career researchers toward globally accessible nanoscience' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2021' ... --- _id: '10327' abstract: - lang: eng text: Composite materials offer numerous advantages in a wide range of applications, including thermoelectrics. Here, semiconductor–metal composites are produced by just blending nanoparticles of a sulfide semiconductor obtained in aqueous solution and at room temperature with a metallic Cu powder. The obtained blend is annealed in a reducing atmosphere and afterward consolidated into dense polycrystalline pellets through spark plasma sintering (SPS). We observe that, during the annealing process, the presence of metallic copper activates a partial reduction of the PbS, resulting in the formation of PbS–Pb–CuxS composites. The presence of metallic lead during the SPS process habilitates the liquid-phase sintering of the composite. Besides, by comparing the transport properties of PbS, the PbS–Pb–CuxS composites, and PbS–CuxS composites obtained by blending PbS and CuxS nanoparticles, we demonstrate that the presence of metallic lead decisively contributes to a strong increase of the charge carrier concentration through spillover of charge carriers enabled by the low work function of lead. The increase in charge carrier concentration translates into much higher electrical conductivities and moderately lower Seebeck coefficients. These properties translate into power factors up to 2.1 mW m–1 K–2 at ambient temperature, well above those of PbS and PbS + CuxS. Additionally, the presence of multiple phases in the final composite results in a notable decrease in the lattice thermal conductivity. Overall, the introduction of metallic copper in the initial blend results in a significant improvement of the thermoelectric performance of PbS, reaching a dimensionless thermoelectric figure of merit ZT = 1.1 at 750 K, which represents about a 400% increase over bare PbS. Besides, an average ZTave = 0.72 in the temperature range 320–773 K is demonstrated. acknowledgement: This work was supported by the European Regional Development Funds. M.L., Y.Z., X.H., and K.X. thank the China Scholarship Council for scholarship support. M. I. has been financially supported by IST Austria and the Werner Siemens Foundation. Y.L. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. J.L. is a Serra Húnter fellow and is grateful to ICREA Academia program and projects MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project NANOGEN (PID2020-116093RB-C43). ICN2 was supported by the Severo Ochoa program from Spanish MINECO (grant no. SEV-2017-0706) and was funded by the CERCA Programme/Generalitat de Catalunya. X.H. thanks China Scholarship Council for scholarship support (201804910551). Part of the present work was performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. article_processing_charge: No article_type: original author: - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Xu full_name: Han, Xu last_name: Han - first_name: Ke full_name: Xiao, Ke last_name: Xiao - first_name: Mehran full_name: Nabahat, Mehran last_name: Nabahat - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Li M, Liu Y, Zhang Y, et al. PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. 2021;13(43):51373–51382. doi:10.1021/acsami.1c15609 apa: Li, M., Liu, Y., Zhang, Y., Han, X., Xiao, K., Nabahat, M., … Cabot, A. (2021). PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. American Chemical Society. https://doi.org/10.1021/acsami.1c15609 chicago: Li, Mengyao, Yu Liu, Yu Zhang, Xu Han, Ke Xiao, Mehran Nabahat, Jordi Arbiol, Jordi Llorca, Maria Ibáñez, and Andreu Cabot. “PbS–Pb–CuxS Composites for Thermoelectric Application.” ACS Applied Materials and Interfaces. American Chemical Society, 2021. https://doi.org/10.1021/acsami.1c15609. ieee: M. Li et al., “PbS–Pb–CuxS composites for thermoelectric application,” ACS Applied Materials and Interfaces, vol. 13, no. 43. American Chemical Society, pp. 51373–51382, 2021. ista: Li M, Liu Y, Zhang Y, Han X, Xiao K, Nabahat M, Arbiol J, Llorca J, Ibáñez M, Cabot A. 2021. PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. 13(43), 51373–51382. mla: Li, Mengyao, et al. “PbS–Pb–CuxS Composites for Thermoelectric Application.” ACS Applied Materials and Interfaces, vol. 13, no. 43, American Chemical Society, 2021, pp. 51373–51382, doi:10.1021/acsami.1c15609. short: M. Li, Y. Liu, Y. Zhang, X. Han, K. Xiao, M. Nabahat, J. Arbiol, J. Llorca, M. Ibáñez, A. Cabot, ACS Applied Materials and Interfaces 13 (2021) 51373–51382. corr_author: '1' das_tickbox: '1' date_created: 2021-11-21T23:01:30Z date_published: 2021-10-19T00:00:00Z date_updated: 2026-07-06T12:15:05Z day: '19' department: - _id: MaIb doi: 10.1021/acsami.1c15609 ec_funded: 1 external_id: isi: - '000715852100070' pmid: - '34665616' fulldoi: https://doi.org/10.1021/acsami.1c15609 intvolume: ' 13' isi: 1 issue: '43' keyword: - CuxS - PbS - energy conversion - nanocomposite - nanoparticle - solution synthesis - thermoelectric language: - iso: eng main_file_link: - open_access: '1' url: https://upcommons.upc.edu/bitstream/2117/363528/1/Pb%20mengyao.pdf month: '10' oa: 1 oa_version: Submitted Version page: 51373–51382 pmid: 1 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery' publication: ACS Applied Materials and Interfaces publication_identifier: eissn: - 1944-8252 issn: - 1944-8244 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: PbS–Pb–CuxS composites for thermoelectric application type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2021' ... --- _id: '9235' abstract: - lang: eng text: Cu2–xS has become one of the most promising thermoelectric materials for application in the middle-high temperature range. Its advantages include the abundance, low cost, and safety of its elements and a high performance at relatively elevated temperatures. However, stability issues limit its operation current and temperature, thus calling for the optimization of the material performance in the middle temperature range. Here, we present a synthetic protocol for large scale production of covellite CuS nanoparticles at ambient temperature and atmosphere, and using water as a solvent. The crystal phase and stoichiometry of the particles are afterward tuned through an annealing process at a moderate temperature under inert or reducing atmosphere. While annealing under argon results in Cu1.8S nanopowder with a rhombohedral crystal phase, annealing in an atmosphere containing hydrogen leads to tetragonal Cu1.96S. High temperature X-ray diffraction analysis shows the material annealed in argon to transform to the cubic phase at ca. 400 K, while the material annealed in the presence of hydrogen undergoes two phase transitions, first to hexagonal and then to the cubic structure. The annealing atmosphere, temperature, and time allow adjustment of the density of copper vacancies and thus tuning of the charge carrier concentration and material transport properties. In this direction, the material annealed under Ar is characterized by higher electrical conductivities but lower Seebeck coefficients than the material annealed in the presence of hydrogen. By optimizing the charge carrier concentration through the annealing time, Cu2–xS with record figures of merit in the middle temperature range, up to 1.41 at 710 K, is obtained. We finally demonstrate that this strategy, based on a low-cost and scalable solution synthesis process, is also suitable for the production of high performance Cu2–xS layers using high throughput and cost-effective printing technologies. acknowledgement: This work was supported by the European Regional Development Funds. M.Y.L., X.H., T.Z., and K.X. thank the China Scholarship Council for scholarship support. M.I. acknowledges financial support from IST Austria. J.L. acknowledges support from the National Natural Science Foundation of China (No. 22008091), the funding for scientific research startup of Jiangsu University (No. 19JDG044), and Jiangsu Provincial Program for High-Level Innovative and Entrepreneurial Talents Introduction. J.L. is a Serra Húnter fellow and is grateful to the ICREA Academia program and projects MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. T.Z. has received funding from the CSC-UAB PhD scholarship program. article_processing_charge: No article_type: original author: - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Xu full_name: Han, Xu last_name: Han - first_name: Ting full_name: Zhang, Ting last_name: Zhang - first_name: Yong full_name: Zuo, Yong last_name: Zuo - first_name: Chenyang full_name: Xie, Chenyang last_name: Xie - first_name: Ke full_name: Xiao, Ke last_name: Xiao - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Junfeng full_name: Liu, Junfeng last_name: Liu - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Li M, Liu Y, Zhang Y, et al. Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. 2021;15(3):4967–4978. doi:10.1021/acsnano.0c09866 apa: Li, M., Liu, Y., Zhang, Y., Han, X., Zhang, T., Zuo, Y., … Cabot, A. (2021). Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. American Chemical Society. https://doi.org/10.1021/acsnano.0c09866 chicago: Li, Mengyao, Yu Liu, Yu Zhang, Xu Han, Ting Zhang, Yong Zuo, Chenyang Xie, et al. “Effect of the Annealing Atmosphere on Crystal Phase and Thermoelectric Properties of Copper Sulfide.” ACS Nano. American Chemical Society, 2021. https://doi.org/10.1021/acsnano.0c09866. ieee: M. Li et al., “Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide,” ACS Nano, vol. 15, no. 3. American Chemical Society, pp. 4967–4978, 2021. ista: Li M, Liu Y, Zhang Y, Han X, Zhang T, Zuo Y, Xie C, Xiao K, Arbiol J, Llorca J, Ibáñez M, Liu J, Cabot A. 2021. Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. 15(3), 4967–4978. mla: Li, Mengyao, et al. “Effect of the Annealing Atmosphere on Crystal Phase and Thermoelectric Properties of Copper Sulfide.” ACS Nano, vol. 15, no. 3, American Chemical Society, 2021, pp. 4967–4978, doi:10.1021/acsnano.0c09866. short: M. Li, Y. Liu, Y. Zhang, X. Han, T. Zhang, Y. Zuo, C. Xie, K. Xiao, J. Arbiol, J. Llorca, M. Ibáñez, J. Liu, A. Cabot, ACS Nano 15 (2021) 4967–4978. corr_author: '1' das_tickbox: '1' date_created: 2021-03-10T20:12:45Z date_published: 2021-03-01T00:00:00Z date_updated: 2026-07-06T12:15:39Z day: '01' department: - _id: MaIb doi: 10.1021/acsnano.0c09866 external_id: isi: - '000634569100106' pmid: - '33645986' fulldoi: https://doi.org/10.1021/acsnano.0c09866 intvolume: ' 15' isi: 1 issue: '3' keyword: - General Engineering - General Physics and Astronomy - General Materials Science language: - iso: eng main_file_link: - open_access: '1' url: https://upcommons.upc.edu/bitstream/handle/2117/363528/Pb%20mengyao.pdf?sequence=1&isAllowed=y month: '03' oa: 1 oa_version: Submitted Version page: 4967–4978 pmid: 1 publication: ACS Nano publication_identifier: eissn: - 1936-086X issn: - 1936-0851 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2021' ... --- _id: '10123' abstract: - lang: eng text: Solution synthesis of particles emerged as an alternative to prepare thermoelectric materials with less demanding processing conditions than conventional solid-state synthetic methods. However, solution synthesis generally involves the presence of additional molecules or ions belonging to the precursors or added to enable solubility and/or regulate nucleation and growth. These molecules or ions can end up in the particles as surface adsorbates and interfere in the material properties. This work demonstrates that ionic adsorbates, in particular Na⁺ ions, are electrostatically adsorbed in SnSe particles synthesized in water and play a crucial role not only in directing the material nano/microstructure but also in determining the transport properties of the consolidated material. In dense pellets prepared by sintering SnSe particles, Na remains within the crystal lattice as dopant, in dislocations, precipitates, and forming grain boundary complexions. These results highlight the importance of considering all the possible unintentional impurities to establish proper structure-property relationships and control material properties in solution-processed thermoelectric materials. acknowledged_ssus: - _id: EM-Fac - _id: NanoFab acknowledgement: 'Y.L. and M.C. contributed equally to this work. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Electron Microscopy Facility (EMF) and the Nanofabrication Facility (NNF). This work was financially supported by IST Austria and the Werner Siemens Foundation. Y.L. acknowledges funding from the European Union''s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. M.C. has received funding from the European Union''s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 665385. Y.Y. and O.C.-M. acknowledge the financial support from DFG within the project SFB 917: Nanoswitches. J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia program. C.C. acknowledges funding from the FWF “Lise Meitner Fellowship” grant agreement M 2889-N.' article_number: '2106858' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Mariano full_name: Calcabrini, Mariano id: 45D7531A-F248-11E8-B48F-1D18A9856A87 last_name: Calcabrini orcid: 0000-0003-4566-5877 - first_name: Yuan full_name: Yu, Yuan last_name: Yu - first_name: Aziz full_name: Genç, Aziz last_name: Genç - first_name: Cheng full_name: Chang, Cheng id: 9E331C2E-9F27-11E9-AE48-5033E6697425 last_name: Chang orcid: 0000-0002-9515-4277 - first_name: Tommaso full_name: Costanzo, Tommaso id: D93824F4-D9BA-11E9-BB12-F207E6697425 last_name: Costanzo orcid: 0000-0001-9732-3815 - first_name: Tobias full_name: Kleinhanns, Tobias id: 8BD9DE16-AB3C-11E9-9C8C-2A03E6697425 last_name: Kleinhanns orcid: 0000-0003-1537-7436 - first_name: Seungho full_name: Lee, Seungho id: BB243B88-D767-11E9-B658-BC13E6697425 last_name: Lee orcid: 0000-0002-6962-8598 - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Oana full_name: Cojocaru‐Mirédin, Oana last_name: Cojocaru‐Mirédin - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: 'Liu Y, Calcabrini M, Yu Y, et al. The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. Advanced Materials. 2021;33(52). doi:10.1002/adma.202106858' apa: 'Liu, Y., Calcabrini, M., Yu, Y., Genç, A., Chang, C., Costanzo, T., … Ibáñez, M. (2021). The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. Advanced Materials. Wiley. https://doi.org/10.1002/adma.202106858' chicago: 'Liu, Yu, Mariano Calcabrini, Yuan Yu, Aziz Genç, Cheng Chang, Tommaso Costanzo, Tobias Kleinhanns, et al. “The Importance of Surface Adsorbates in Solution‐processed Thermoelectric Materials: The Case of SnSe.” Advanced Materials. Wiley, 2021. https://doi.org/10.1002/adma.202106858.' ieee: 'Y. Liu et al., “The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe,” Advanced Materials, vol. 33, no. 52. Wiley, 2021.' ista: 'Liu Y, Calcabrini M, Yu Y, Genç A, Chang C, Costanzo T, Kleinhanns T, Lee S, Llorca J, Cojocaru‐Mirédin O, Ibáñez M. 2021. The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. Advanced Materials. 33(52), 2106858.' mla: 'Liu, Yu, et al. “The Importance of Surface Adsorbates in Solution‐processed Thermoelectric Materials: The Case of SnSe.” Advanced Materials, vol. 33, no. 52, 2106858, Wiley, 2021, doi:10.1002/adma.202106858.' short: Y. Liu, M. Calcabrini, Y. Yu, A. Genç, C. Chang, T. Costanzo, T. Kleinhanns, S. Lee, J. Llorca, O. Cojocaru‐Mirédin, M. Ibáñez, Advanced Materials 33 (2021). corr_author: '1' date_created: 2021-10-11T20:07:24Z date_published: 2021-12-29T00:00:00Z date_updated: 2026-07-06T13:07:38Z day: '29' ddc: - '620' department: - _id: EM-Fac - _id: MaIb doi: 10.1002/adma.202106858 ec_funded: 1 external_id: isi: - '000709899300001' pmid: - '34626034' file: - access_level: open_access checksum: 990bccc527c64d85cf1c97885110b5f4 content_type: application/pdf creator: cchlebak date_created: 2022-02-03T13:16:14Z date_updated: 2022-02-03T13:16:14Z file_id: '10720' file_name: 2021_AdvancedMaterials_Liu.pdf file_size: 5595666 relation: main_file success: 1 file_date_updated: 2022-02-03T13:16:14Z fulldoi: https://doi.org/10.1002/adma.202106858 has_accepted_license: '1' intvolume: ' 33' isi: 1 issue: '52' keyword: - mechanical engineering - mechanics of materials - general materials science language: - iso: eng month: '12' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 9B8804FC-BA93-11EA-9121-9846C619BF3A grant_number: M02889 name: Bottom-up Engineering for Thermoelectric Applications - _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery' publication: Advanced Materials publication_identifier: eissn: - 1521-4095 issn: - 0935-9648 publication_status: published publisher: Wiley quality_controlled: '1' related_material: record: - id: '12885' relation: dissertation_contains status: public - id: '17062' relation: later_version status: public scopus_import: '1' status: public title: 'The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 33 year: '2021' ... --- _id: '15280' article_number: '050' article_processing_charge: No author: - first_name: Daniel full_name: Balazs, Daniel id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E last_name: Balazs orcid: 0000-0001-7597-043X - first_name: Jessica full_name: Cimada da Silva, Jessica last_name: Cimada da Silva - first_name: Tyler full_name: Dunbar, Tyler last_name: Dunbar - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Tobias full_name: Hanrath, Tobias last_name: Hanrath citation: ama: 'Balazs D, Cimada da Silva J, Dunbar T, Ibáñez M, Hanrath T. Controlled reactive assembly of colloidal nanocrystal superlattices: Mechanism and kinetics. In: Proceedings of the Internet NanoGe Conference on Nanocrystals. Fundació de la comunitat valenciana SCITO; 2021. doi:10.29363/nanoge.incnc.2021.050' apa: 'Balazs, D., Cimada da Silva, J., Dunbar, T., Ibáñez, M., & Hanrath, T. (2021). Controlled reactive assembly of colloidal nanocrystal superlattices: Mechanism and kinetics. In Proceedings of the Internet NanoGe Conference on Nanocrystals. Virtual: Fundació de la comunitat valenciana SCITO. https://doi.org/10.29363/nanoge.incnc.2021.050' chicago: 'Balazs, Daniel, Jessica Cimada da Silva, Tyler Dunbar, Maria Ibáñez, and Tobias Hanrath. “Controlled Reactive Assembly of Colloidal Nanocrystal Superlattices: Mechanism and Kinetics.” In Proceedings of the Internet NanoGe Conference on Nanocrystals. Fundació de la comunitat valenciana SCITO, 2021. https://doi.org/10.29363/nanoge.incnc.2021.050.' ieee: 'D. Balazs, J. Cimada da Silva, T. Dunbar, M. Ibáñez, and T. Hanrath, “Controlled reactive assembly of colloidal nanocrystal superlattices: Mechanism and kinetics,” in Proceedings of the Internet NanoGe Conference on Nanocrystals, Virtual, 2021.' ista: 'Balazs D, Cimada da Silva J, Dunbar T, Ibáñez M, Hanrath T. 2021. Controlled reactive assembly of colloidal nanocrystal superlattices: Mechanism and kinetics. Proceedings of the Internet NanoGe Conference on Nanocrystals. iNCNC: Internet nanoGe Conference on Nanocrystals, 050.' mla: 'Balazs, Daniel, et al. “Controlled Reactive Assembly of Colloidal Nanocrystal Superlattices: Mechanism and Kinetics.” Proceedings of the Internet NanoGe Conference on Nanocrystals, 050, Fundació de la comunitat valenciana SCITO, 2021, doi:10.29363/nanoge.incnc.2021.050.' short: D. Balazs, J. Cimada da Silva, T. Dunbar, M. Ibáñez, T. Hanrath, in:, Proceedings of the Internet NanoGe Conference on Nanocrystals, Fundació de la comunitat valenciana SCITO, 2021. conference: end_date: 2021-07-02 location: Virtual name: 'iNCNC: Internet nanoGe Conference on Nanocrystals' start_date: 2021-06-28 corr_author: '1' date_created: 2024-04-03T08:28:26Z date_published: 2021-06-08T00:00:00Z date_updated: 2026-07-06T13:07:52Z day: '08' ddc: - '530' department: - _id: MaIb - _id: LifeSc doi: 10.29363/nanoge.incnc.2021.050 fulldoi: https://doi.org/10.29363/nanoge.incnc.2021.050 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.29363/nanoge.incnc.2021.050 month: '06' oa: 1 oa_version: Published Version publication: Proceedings of the Internet NanoGe Conference on Nanocrystals publication_status: published publisher: Fundació de la comunitat valenciana SCITO quality_controlled: '1' status: public title: 'Controlled reactive assembly of colloidal nanocrystal superlattices: Mechanism and kinetics' type: conference_abstract user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2021' ... --- OA_type: closed access _id: '10809' abstract: - lang: eng text: Thermoelectric materials are engines that convert heat into an electrical current. Intuitively, the efficiency of this process depends on how many electrons (charge carriers) can move and how easily they do so, how much energy those moving electrons transport, and how easily the temperature gradient is maintained. In terms of material properties, an excellent thermoelectric material requires a high electrical conductivity σ, a high Seebeck coefficient S (a measure of the induced thermoelectric voltage as a function of temperature gradient), and a low thermal conductivity κ. The challenge is that these three properties are strongly interrelated in a conflicting manner (1). On page 722 of this issue, Roychowdhury et al. (2) have found a way to partially break these ties in silver antimony telluride (AgSbTe2) with the addition of cadmium (Cd) cations, which increase the ordering in this inherently disordered thermoelectric material. article_processing_charge: No article_type: letter_note author: - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: Liu Y, Ibáñez M. Tidying up the mess. Science. 2021;371(6530):678-679. doi:10.1126/science.abg0886 apa: Liu, Y., & Ibáñez, M. (2021). Tidying up the mess. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.abg0886 chicago: Liu, Yu, and Maria Ibáñez. “Tidying up the Mess.” Science. American Association for the Advancement of Science, 2021. https://doi.org/10.1126/science.abg0886. ieee: Y. Liu and M. Ibáñez, “Tidying up the mess,” Science, vol. 371, no. 6530. American Association for the Advancement of Science, pp. 678–679, 2021. ista: Liu Y, Ibáñez M. 2021. Tidying up the mess. Science. 371(6530), 678–679. mla: Liu, Yu, and Maria Ibáñez. “Tidying up the Mess.” Science, vol. 371, no. 6530, American Association for the Advancement of Science, 2021, pp. 678–79, doi:10.1126/science.abg0886. short: Y. Liu, M. Ibáñez, Science 371 (2021) 678–679. corr_author: '1' date_created: 2022-03-03T09:51:48Z date_published: 2021-02-12T00:00:00Z date_updated: 2026-07-28T12:16:17Z day: '12' department: - _id: MaIb doi: 10.1126/science.abg0886 external_id: isi: - '000617551600027' pmid: - '33574201' fulldoi: https://doi.org/10.1126/science.abg0886 intvolume: ' 371' isi: 1 issue: '6530' language: - iso: eng month: '02' oa_version: None page: 678-679 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' scopus_import: '1' status: public title: Tidying up the mess type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 371 year: '2021' ... --- _id: '7634' abstract: - lang: eng text: Assemblies of colloidal semiconductor nanocrystals (NCs) in the form of thin solid films leverage the size-dependent quantum confinement properties and the wet chemical methods vital for the development of the emerging solution-processable electronics, photonics, and optoelectronics technologies. The ability to control the charge carrier transport in the colloidal NC assemblies is fundamental for altering their electronic and optical properties for the desired applications. Here we demonstrate a strategy to render the solids of narrow-bandgap NC assemblies exclusively electron-transporting by creating a type-II heterojunction via shelling. Electronic transport of molecularly cross-linked PbTe@PbS core@shell NC assemblies is measured using both a conventional solid gate transistor and an electric-double-layer transistor, as well as compared with those of core-only PbTe NCs. In contrast to the ambipolar characteristics demonstrated by many narrow-bandgap NCs, the core@shell NCs exhibit exclusive n-type transport, i.e., drastically suppressed contribution of holes to the overall transport. The PbS shell that forms a type-II heterojunction assists the selective carrier transport by heavy doping of electrons into the PbTe-core conduction level and simultaneously strongly localizes the holes within the NC core valence level. This strongly enhanced n-type transport makes these core@shell NCs suitable for applications where ambipolar characteristics should be actively suppressed, in particular, for thermoelectric and electron-transporting layers in photovoltaic devices. acknowledgement: This work is partly supported by Grants-in-Aid for Scientific Research by Young Scientist A (KAKENHI Wakate-A) No. JP17H04802, Grants-in-Aid for Scientific Research No. JP19H05602 from the Japan Society for the Promotion of Science, and RIKEN Incentive Research Grant (Shoreikadai) 2016. M.V.K. and M.I. acknowledge financial support from the European Union (EU) via FP7 ERC Starting Grant 2012 (Project NANOSOLID, GA No. 306733) and ETH Zurich via ETH career seed grant (SEED-18 16-2). Support from Cambridge Display Technology, Ltd., and Sumitomo Chemical Company is also acknowledged. We thank Mrs. T. Kikitsu and Dr. D. Hashizume (RIKEN-CEMS) for access to the transmission electron microscope facility. article_processing_charge: No article_type: original author: - first_name: Retno full_name: Miranti, Retno last_name: Miranti - first_name: Daiki full_name: Shin, Daiki last_name: Shin - first_name: Ricky Dwi full_name: Septianto, Ricky Dwi last_name: Septianto - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Maksym V. full_name: Kovalenko, Maksym V. last_name: Kovalenko - first_name: Nobuhiro full_name: Matsushita, Nobuhiro last_name: Matsushita - first_name: Yoshihiro full_name: Iwasa, Yoshihiro last_name: Iwasa - first_name: Satria Zulkarnaen full_name: Bisri, Satria Zulkarnaen last_name: Bisri citation: ama: Miranti R, Shin D, Septianto RD, et al. Exclusive electron transport in Core@Shell PbTe@PbS colloidal semiconductor nanocrystal assemblies. ACS Nano. 2020;14(3):3242-3250. doi:10.1021/acsnano.9b08687 apa: Miranti, R., Shin, D., Septianto, R. D., Ibáñez, M., Kovalenko, M. V., Matsushita, N., … Bisri, S. Z. (2020). Exclusive electron transport in Core@Shell PbTe@PbS colloidal semiconductor nanocrystal assemblies. ACS Nano. American Chemical Society. https://doi.org/10.1021/acsnano.9b08687 chicago: Miranti, Retno, Daiki Shin, Ricky Dwi Septianto, Maria Ibáñez, Maksym V. Kovalenko, Nobuhiro Matsushita, Yoshihiro Iwasa, and Satria Zulkarnaen Bisri. “Exclusive Electron Transport in Core@Shell PbTe@PbS Colloidal Semiconductor Nanocrystal Assemblies.” ACS Nano. American Chemical Society, 2020. https://doi.org/10.1021/acsnano.9b08687. ieee: R. Miranti et al., “Exclusive electron transport in Core@Shell PbTe@PbS colloidal semiconductor nanocrystal assemblies,” ACS Nano, vol. 14, no. 3. American Chemical Society, pp. 3242–3250, 2020. ista: Miranti R, Shin D, Septianto RD, Ibáñez M, Kovalenko MV, Matsushita N, Iwasa Y, Bisri SZ. 2020. Exclusive electron transport in Core@Shell PbTe@PbS colloidal semiconductor nanocrystal assemblies. ACS Nano. 14(3), 3242–3250. mla: Miranti, Retno, et al. “Exclusive Electron Transport in Core@Shell PbTe@PbS Colloidal Semiconductor Nanocrystal Assemblies.” ACS Nano, vol. 14, no. 3, American Chemical Society, 2020, pp. 3242–50, doi:10.1021/acsnano.9b08687. short: R. Miranti, D. Shin, R.D. Septianto, M. Ibáñez, M.V. Kovalenko, N. Matsushita, Y. Iwasa, S.Z. Bisri, ACS Nano 14 (2020) 3242–3250. date_created: 2020-04-05T22:00:48Z date_published: 2020-03-24T00:00:00Z date_updated: 2023-08-18T10:25:40Z day: '24' department: - _id: MaIb doi: 10.1021/acsnano.9b08687 external_id: isi: - '000526301400057' pmid: - '32073817' fulldoi: https://doi.org/10.1021/acsnano.9b08687 intvolume: ' 14' isi: 1 issue: '3' language: - iso: eng month: '03' oa_version: None page: 3242-3250 pmid: 1 publication: ACS Nano publication_identifier: eissn: - 1936-086X publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Exclusive electron transport in Core@Shell PbTe@PbS colloidal semiconductor nanocrystal assemblies type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 14 year: '2020' ... --- OA_place: repository OA_type: green _id: '8039' abstract: - lang: eng text: In the present work, we report a solution-based strategy to produce crystallographically textured SnSe bulk nanomaterials and printed layers with optimized thermoelectric performance in the direction normal to the substrate. Our strategy is based on the formulation of a molecular precursor that can be continuously decomposed to produce a SnSe powder or printed into predefined patterns. The precursor formulation and decomposition conditions are optimized to produce pure phase 2D SnSe nanoplates. The printed layer and the bulk material obtained after hot press displays a clear preferential orientation of the crystallographic domains, resulting in an ultralow thermal conductivity of 0.55 W m–1 K–1 in the direction normal to the substrate. Such textured nanomaterials present highly anisotropic properties with the best thermoelectric performance in plane, i.e., in the directions parallel to the substrate, which coincide with the crystallographic bc plane of SnSe. This is an unfortunate characteristic because thermoelectric devices are designed to create/harvest temperature gradients in the direction normal to the substrate. We further demonstrate that this limitation can be overcome with the introduction of small amounts of tellurium in the precursor. The presence of tellurium allows one to reduce the band gap and increase both the charge carrier concentration and the mobility, especially the cross plane, with a minimal decrease of the Seebeck coefficient. These effects translate into record out of plane ZT values at 800 K. article_processing_charge: No article_type: original author: - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Congcong full_name: Xing, Congcong last_name: Xing - first_name: Ting full_name: Zhang, Ting last_name: Zhang - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Mercè full_name: Pacios, Mercè last_name: Pacios - first_name: Xiaoting full_name: Yu, Xiaoting last_name: Yu - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Doris full_name: Cadavid, Doris last_name: Cadavid - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Zhang Y, Liu Y, Xing C, et al. Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices. ACS Applied Materials and Interfaces. 2020;12(24):27104-27111. doi:10.1021/acsami.0c04331 apa: Zhang, Y., Liu, Y., Xing, C., Zhang, T., Li, M., Pacios, M., … Cabot, A. (2020). Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices. ACS Applied Materials and Interfaces. American Chemical Society. https://doi.org/10.1021/acsami.0c04331 chicago: Zhang, Yu, Yu Liu, Congcong Xing, Ting Zhang, Mengyao Li, Mercè Pacios, Xiaoting Yu, et al. “Tin Selenide Molecular Precursor for the Solution Processing of Thermoelectric Materials and Devices.” ACS Applied Materials and Interfaces. American Chemical Society, 2020. https://doi.org/10.1021/acsami.0c04331. ieee: Y. Zhang et al., “Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices,” ACS Applied Materials and Interfaces, vol. 12, no. 24. American Chemical Society, pp. 27104–27111, 2020. ista: Zhang Y, Liu Y, Xing C, Zhang T, Li M, Pacios M, Yu X, Arbiol J, Llorca J, Cadavid D, Ibáñez M, Cabot A. 2020. Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices. ACS Applied Materials and Interfaces. 12(24), 27104–27111. mla: Zhang, Yu, et al. “Tin Selenide Molecular Precursor for the Solution Processing of Thermoelectric Materials and Devices.” ACS Applied Materials and Interfaces, vol. 12, no. 24, American Chemical Society, 2020, pp. 27104–11, doi:10.1021/acsami.0c04331. short: Y. Zhang, Y. Liu, C. Xing, T. Zhang, M. Li, M. Pacios, X. Yu, J. Arbiol, J. Llorca, D. Cadavid, M. Ibáñez, A. Cabot, ACS Applied Materials and Interfaces 12 (2020) 27104–27111. corr_author: '1' date_created: 2020-06-29T07:59:35Z date_published: 2020-06-17T00:00:00Z date_updated: 2025-04-24T11:49:17Z day: '17' department: - _id: MaIb doi: 10.1021/acsami.0c04331 ec_funded: 1 external_id: isi: - '000542925300032' pmid: - '32437128' fulldoi: https://doi.org/10.1021/acsami.0c04331 intvolume: ' 12' isi: 1 issue: '24' language: - iso: eng main_file_link: - open_access: '1' url: https://ddd.uab.cat/pub/artpub/2020/235998/acsapplmaterinterfaces_a2020v12np27104pp.pdf month: '06' oa: 1 oa_version: Submitted Version page: 27104-27111 pmid: 1 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: ACS Applied Materials and Interfaces publication_identifier: eissn: - '19448252' publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12 year: '2020' ... --- OA_place: repository OA_type: green _id: '8189' abstract: - lang: eng text: Direct ethanol fuel cells (DEFCs) show a huge potential to power future electric vehicles and portable electronics, but their deployment is currently limited by the unavailability of proper electrocatalysis for the ethanol oxidation reaction (EOR). In this work, we engineer a new electrocatalyst by incorporating phosphorous into a palladium-tin alloy and demonstrate a significant performance improvement toward EOR. We first detail a synthetic method to produce Pd2Sn:P nanocrystals that incorporate 35% of phosphorus. These nanoparticles are supported on carbon black and tested for EOR. Pd2Sn:P/C catalysts exhibit mass current densities up to 5.03 A mgPd−1, well above those of Pd2Sn/C, PdP2/C and Pd/C reference catalysts. Furthermore, a twofold lower Tafel slope and a much longer durability are revealed for the Pd2Sn:P/C catalyst compared with Pd/C. The performance improvement is rationalized with the aid of density functional theory (DFT) calculations considering different phosphorous chemical environments. Depending on its oxidation state, surface phosphorus introduces sites with low energy OH− adsorption and/or strongly influences the electronic structure of palladium and tin to facilitate the oxidation of the acetyl to acetic acid, which is considered the EOR rate limiting step. DFT calculations also points out that the durability improvement of Pd2Sn:P/C catalyst is associated to the promotion of OH adsorption that accelerates the oxidation of intermediate poisoning COads, reactivating the catalyst surface. acknowledgement: This work was supported by the European Regional Development Funds and by the Spanish Ministerio de Economía y Competitividad through the project SEHTOP, ENE2016- 77798-C4-3-R, and ENE2017-85087-C3. X. Y. thanks the China Scholarship Council for the scholarship support. J. Liu acknowledges support from the Jiangsu University Foundation (4111510011). J. Li obtained International Postdoctoral Exchange Fellowship Program (Talent-Introduction program) in 2019 and is grateful for the project (2019M663468) funded by the China Postdoctoral Science Foundation. Authors acknowledge funding from Generalitat de Catalunya 2017 SGR 327 and 2017 SGR 1246, and from IST Austria. ICN2 acknowledges the support from the Severo Ochoa Programme (MINECO, grant no. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. J. Llorca is a Serra Húnter Fellow and is grateful to MICINN/FEDER RTI2018-093996-B-C31, GC 2017 SGR 128 and to ICREA Academia program. article_number: '105116' article_processing_charge: No article_type: original author: - first_name: Xiaoting full_name: Yu, Xiaoting last_name: Yu - first_name: Junfeng full_name: Liu, Junfeng last_name: Liu - first_name: Junshan full_name: Li, Junshan last_name: Li - first_name: Zhishan full_name: Luo, Zhishan last_name: Luo - first_name: Yong full_name: Zuo, Yong last_name: Zuo - first_name: Congcong full_name: Xing, Congcong last_name: Xing - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Déspina full_name: Nasiou, Déspina last_name: Nasiou - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Kai full_name: Pan, Kai last_name: Pan - first_name: Tobias full_name: Kleinhanns, Tobias id: 8BD9DE16-AB3C-11E9-9C8C-2A03E6697425 last_name: Kleinhanns - first_name: Ying full_name: Xie, Ying last_name: Xie - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Yu X, Liu J, Li J, et al. Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation. Nano Energy. 2020;77(11). doi:10.1016/j.nanoen.2020.105116 apa: Yu, X., Liu, J., Li, J., Luo, Z., Zuo, Y., Xing, C., … Cabot, A. (2020). Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation. Nano Energy. Elsevier. https://doi.org/10.1016/j.nanoen.2020.105116 chicago: Yu, Xiaoting, Junfeng Liu, Junshan Li, Zhishan Luo, Yong Zuo, Congcong Xing, Jordi Llorca, et al. “Phosphorous Incorporation in Pd2Sn Alloys for Electrocatalytic Ethanol Oxidation.” Nano Energy. Elsevier, 2020. https://doi.org/10.1016/j.nanoen.2020.105116. ieee: X. Yu et al., “Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation,” Nano Energy, vol. 77, no. 11. Elsevier, 2020. ista: Yu X, Liu J, Li J, Luo Z, Zuo Y, Xing C, Llorca J, Nasiou D, Arbiol J, Pan K, Kleinhanns T, Xie Y, Cabot A. 2020. Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation. Nano Energy. 77(11), 105116. mla: Yu, Xiaoting, et al. “Phosphorous Incorporation in Pd2Sn Alloys for Electrocatalytic Ethanol Oxidation.” Nano Energy, vol. 77, no. 11, 105116, Elsevier, 2020, doi:10.1016/j.nanoen.2020.105116. short: X. Yu, J. Liu, J. Li, Z. Luo, Y. Zuo, C. Xing, J. Llorca, D. Nasiou, J. Arbiol, K. Pan, T. Kleinhanns, Y. Xie, A. Cabot, Nano Energy 77 (2020). date_created: 2020-08-02T22:00:57Z date_published: 2020-11-01T00:00:00Z date_updated: 2025-04-24T11:53:45Z day: '01' department: - _id: MaIb doi: 10.1016/j.nanoen.2020.105116 external_id: isi: - '000581738300030' fulldoi: https://doi.org/10.1016/j.nanoen.2020.105116 intvolume: ' 77' isi: 1 issue: '11' language: - iso: eng main_file_link: - open_access: '1' url: http://hdl.handle.net/2117/335346 month: '11' oa: 1 oa_version: Submitted Version publication: Nano Energy publication_identifier: issn: - 2211-2855 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 77 year: '2020' ...