article published yes Mariano Calcabrini author 45D7531A-F248-11E8-B48F-1D18A9856A870000-0003-4566-5877 Aziz Genc author Yu Liu author 2A70014E-F248-11E8-B48F-1D18A9856A870000-0001-7313-6740 Tobias Kleinhanns author 8BD9DE16-AB3C-11E9-9C8C-2A03E66974250000-0003-1537-7436 Seungho Lee author BB243B88-D767-11E9-B658-BC13E66974250000-0002-6962-8598 Dmitry N. Dirin author Quinten A. Akkerman author Maksym V. Kovalenko author Jordi Arbiol author Maria Ibáñez author 43C61214-F248-11E8-B48F-1D18A9856A870000-0001-5013-2843 MaIb department International IST Doctoral Program project 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. https://research-explorer.ista.ac.at/download/9118/9155/2021_ACSEnergyLetters_Calcabrini.pdf application/pdfno American Chemical Society2021 eng 2380-8195 33614964 00061980340003610.1021/acsenergylett.0c02448 62581-587 https://research-explorer.ista.ac.at/record/12885 Calcabrini M, Genc A, Liu Y, et al. Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites. <i>ACS Energy Letters</i>. 2021;6(2):581-587. doi:<a href="https://doi.org/10.1021/acsenergylett.0c02448">10.1021/acsenergylett.0c02448</a> M. Calcabrini <i>et al.</i>, “Exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites,” <i>ACS Energy Letters</i>, vol. 6, no. 2. American Chemical Society, pp. 581–587, 2021. 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. <i>ACS Energy Letters</i>. American Chemical Society. <a href="https://doi.org/10.1021/acsenergylett.0c02448">https://doi.org/10.1021/acsenergylett.0c02448</a> 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. 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. 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.” <i>ACS Energy Letters</i>. American Chemical Society, 2021. <a href="https://doi.org/10.1021/acsenergylett.0c02448">https://doi.org/10.1021/acsenergylett.0c02448</a>. Calcabrini, Mariano, et al. “Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites.” <i>ACS Energy Letters</i>, vol. 6, no. 2, American Chemical Society, 2021, pp. 581–87, doi:<a href="https://doi.org/10.1021/acsenergylett.0c02448">10.1021/acsenergylett.0c02448</a>. 91182021-02-14T23:01:14Z2026-04-07T13:26:13Z