# Brightening of a dark monolayer semiconductor via strong light-matter coupling in a cavity

https://mdr.nims.go.jp/datasets/0869e246-7012-4c39-a986-84afd3b1eff4

## File

- [s41467-022-30645-5.pdf](https://mdr.nims.go.jp/filesets/f95da94c-2d4e-40af-81b4-c4fc3182974b/download) ([Detail](https://mdr.nims.go.jp/filesets/f95da94c-2d4e-40af-81b4-c4fc3182974b.md))

## Id

0869e246-7012-4c39-a986-84afd3b1eff4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T02:30:01.793869Z

## Updated at

2025-02-27T23:30:17.891363Z

## Published at

2025-02-27T23:30:18.123224Z

## Doi



## First published url

https://doi.org/10.1038/s41467-022-30645-5

## Date published

2022-05-30

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Brightening of a dark monolayer semiconductor via strong light-matter coupling
    in a cavity
  title_type: original
  lang: en

## Description

- description: Engineering the properties of quantum materials via strong light-matter
    coupling is a compelling research direction with a multiplicity of modern applications.
    Those range from modifying charge transport in organic molecules in the strong
    coupling regime, steering particle correlation and interactions, and even controlling
    chemical reactions. Here, we study the modification of the material properties
    via strong coupling and demon- strate an effective inversion of the excitonic
    band-ordering in a monolayer of WSe2 with spin-forbidden, optically dark ground
    state, which results in the brightening of this intrinsically dark material. In
    our experiments, we harness the strong light-matter coupling between cavity photon
    and the high energy, spin-allowed bright exciton, and thus creating two bright
    polaritonic modes in the optical bandgap with the lower polariton mode pushed
    below the WSe2 dark state. We demonstrate that in this regime the commonly observed
    luminescence quenching stemming from the fast relaxation to the dark ground state
    is prevented. We probe this effec- tive brightening by temperature-dependent photoluminescence,
    and we find an excellent agreement with a theoretical model accounting for the
    inversion of the band ordering and phonon-assisted polariton relaxation.
  description_type: abstract
  lang: und

## Creator

- name: Hangyong Shan
  role: author
- name: Ivan Iorsh
  role: author
- name: Bo Han
  role: author
- name: Christoph Rupprecht
  role: author
- name: Heiko Knopf
  role: author
- name: Falk Eilenberger
  role: author
- name: Martin Esmann
  role: author
- name: Kentaro Yumigeta
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Sebastian Klembt
  role: author
- name: Sven Höfling
  role: author
- name: Sefaattin Tongay
  role: author
- name: Carlos Antón-Solanas
  role: author
- name: Ivan A. Shelykh
  role: author
- name: Christian Schneider
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Quantum materials
  schema: not_defined
- subject: light-matter coupling
  schema: not_defined
- subject: excitonic band-ordering
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '13'
  issue: '1'
  article_number: '3001'

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: f95da94c-2d4e-40af-81b4-c4fc3182974b
  filename: s41467-022-30645-5.pdf
  content_type: application/pdf
  size: 2793338
  md5: d3fcbdb9b4a962d350b40efd3344499d

## Thumbnail

fileset_id: f95da94c-2d4e-40af-81b4-c4fc3182974b
filename: s41467-022-30645-5.pdf