---
OA_type: closed access
_id: '20529'
abstract:
- lang: eng
  text: Single molecules bridging two metallic electrodes can emit light through electroluminescence
    when subjected to a bias voltage. Typically, light emission in such devices results
    from transitions between molecular states, although in the presence of light-matter
    coupling, the emission can result from a transition between hybrid light-matter
    states. Here, we create single metal-molecule-metal junctions and simultaneously
    collect conductance and electroluminescence data using a scanning tunneling microscope
    (STM) equipped with a custom spectrometer. Through experimental analysis and electronic
    structure calculations, we provide evidence for a molecule-electrode interfacial
    exciton coupled to a junction cavity plasmon. Importantly, we find that close
    to resonant transport conditions, the molecular junction functions as a single
    emitter that is strongly coupled to the junction cavity mode, leading to characteristic
    Rabi splitting of the emission spectrum and providing the first example of an
    electroluminescence-driven single-molecule system in the regime of strong light-matter
    coupling.
article_processing_charge: No
article_type: original
author:
- first_name: Angela L.
  full_name: Paoletta, Angela L.
  last_name: Paoletta
- first_name: Norah M.
  full_name: Hoffmann, Norah M.
  last_name: Hoffmann
- first_name: Daniel W.
  full_name: Cheng, Daniel W.
  last_name: Cheng
- first_name: Emma
  full_name: York, Emma
  last_name: York
- first_name: Ding
  full_name: Xu, Ding
  last_name: Xu
- first_name: Boyuan
  full_name: Zhang, Boyuan
  last_name: Zhang
- first_name: Milan
  full_name: Delor, Milan
  last_name: Delor
- first_name: Timothy C.
  full_name: Berkelbach, Timothy C.
  last_name: Berkelbach
- first_name: Latha
  full_name: Venkataraman, Latha
  id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
  last_name: Venkataraman
  orcid: 0000-0002-6957-6089
citation:
  ama: Paoletta AL, Hoffmann NM, Cheng DW, et al. Plasmon-exciton strong coupling
    in single-molecule junction electroluminescence. <i>Journal of the American Chemical
    Society</i>. 2024;146(50):34394-34400. doi:<a href="https://doi.org/10.1021/jacs.4c09782">10.1021/jacs.4c09782</a>
  apa: Paoletta, A. L., Hoffmann, N. M., Cheng, D. W., York, E., Xu, D., Zhang, B.,
    … Venkataraman, L. (2024). Plasmon-exciton strong coupling in single-molecule
    junction electroluminescence. <i>Journal of the American Chemical Society</i>.
    American Chemical Society. <a href="https://doi.org/10.1021/jacs.4c09782">https://doi.org/10.1021/jacs.4c09782</a>
  chicago: Paoletta, Angela L., Norah M. Hoffmann, Daniel W. Cheng, Emma York, Ding
    Xu, Boyuan Zhang, Milan Delor, Timothy C. Berkelbach, and Latha Venkataraman.
    “Plasmon-Exciton Strong Coupling in Single-Molecule Junction Electroluminescence.”
    <i>Journal of the American Chemical Society</i>. American Chemical Society, 2024.
    <a href="https://doi.org/10.1021/jacs.4c09782">https://doi.org/10.1021/jacs.4c09782</a>.
  ieee: A. L. Paoletta <i>et al.</i>, “Plasmon-exciton strong coupling in single-molecule
    junction electroluminescence,” <i>Journal of the American Chemical Society</i>,
    vol. 146, no. 50. American Chemical Society, pp. 34394–34400, 2024.
  ista: Paoletta AL, Hoffmann NM, Cheng DW, York E, Xu D, Zhang B, Delor M, Berkelbach
    TC, Venkataraman L. 2024. Plasmon-exciton strong coupling in single-molecule junction
    electroluminescence. Journal of the American Chemical Society. 146(50), 34394–34400.
  mla: Paoletta, Angela L., et al. “Plasmon-Exciton Strong Coupling in Single-Molecule
    Junction Electroluminescence.” <i>Journal of the American Chemical Society</i>,
    vol. 146, no. 50, American Chemical Society, 2024, pp. 34394–400, doi:<a href="https://doi.org/10.1021/jacs.4c09782">10.1021/jacs.4c09782</a>.
  short: A.L. Paoletta, N.M. Hoffmann, D.W. Cheng, E. York, D. Xu, B. Zhang, M. Delor,
    T.C. Berkelbach, L. Venkataraman, Journal of the American Chemical Society 146
    (2024) 34394–34400.
date_created: 2025-10-23T12:20:19Z
date_published: 2024-12-04T00:00:00Z
date_updated: 2025-10-23T13:03:41Z
day: '04'
doi: 10.1021/jacs.4c09782
extern: '1'
external_id:
  pmid:
  - '39630979'
fulldoi: https://doi.org/10.1021/jacs.4c09782
intvolume: '       146'
issue: '50'
language:
- iso: eng
month: '12'
oa_version: None
page: 34394-34400
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
  eissn:
  - 1520-5126
  issn:
  - 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Plasmon-exciton strong coupling in single-molecule junction electroluminescence
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 146
year: '2024'
...