# Probing the Formation of Dark Interlayer Excitons via Ultrafast Photocurrent

https://mdr.nims.go.jp/datasets/e27272a5-be99-4a72-be0e-e37ae480156a

## File

- [yagodkin-et-al-2023-probing-the-formation-of-dark-interlayer-excitons-via-ultrafast-photocurrent.pdf](https://mdr.nims.go.jp/filesets/ea86d5a4-cb2e-40c9-9093-05bc387eac78/download) ([Detail](https://mdr.nims.go.jp/filesets/ea86d5a4-cb2e-40c9-9093-05bc387eac78.md))

## Id

e27272a5-be99-4a72-be0e-e37ae480156a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-14T05:19:19.560779Z

## Updated at

2025-02-14T07:31:00.743892Z

## Published at

2025-02-14T07:31:00.817158Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.3c01708

## Date published

2023-10-25

## Recorded date published

2023-10-25

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Probing the Formation of Dark Interlayer Excitons via Ultrafast Photocurrent
  title_type: original
  lang: en

## Description

- description: Optically dark excitons determine a wide range of properties of photoexcited
    semiconductors yet are hard to access via conventional time-resolved spectroscopies.
    Here, we develop a time- resolved ultrafast photocurrent technique (trPC) to probe
    the formation dynamics of optically dark excitons. The nonlinear nature of the
    trPC makes it particularly sensitive to the formation of excitons occurring at
    the femtosecond timescale after the excitation. As proof of principle, we extract
    the interlayer exciton formation time 0.4 ps at 160 μJ/cm2 fluence in a MoS2/MoSe2
    heterostructure and show that this time decreases with fluence. In addition, our
    approach provides access to the dynamics of carriers and their interlayer transport.
    Overall, our work establishes trPC as a technique to study dark excitons in various
    systems that are hard to probe by other approaches.
  description_type: abstract
  lang: und

## Creator

- name: Denis Yagodkin
  role: author
- name: Abhijeet Kumar
  role: author
- name: Elias Ankerhold
  role: author
- name: Johanna Richter
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Cornelius Gahl
  role: author
- name: Kirill I. Bolotin
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Dark excitons
  schema: not_defined
- subject: ultrafast photocurrent
  schema: not_defined
- subject: MoS2/MoSe2
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '23'
  issue: '20'
  start_page: 9212
  end_page: 9218

## Conference



## Related item



## Funding

- identifier: 05K22KE3
  funder_name: Bundesministerium für Bildung und Forschung
- identifier: TRR227 B08
  funder_name: Deutsche Forschungsgemeinschaft

## 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



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## Fileset

- id: ea86d5a4-cb2e-40c9-9093-05bc387eac78
  filename: yagodkin-et-al-2023-probing-the-formation-of-dark-interlayer-excitons-via-ultrafast-photocurrent.pdf
  content_type: application/pdf
  size: 2434135
  md5: ed2eb66700236872fcd0884160f6713c

## Thumbnail

fileset_id: ea86d5a4-cb2e-40c9-9093-05bc387eac78
filename: yagodkin-et-al-2023-probing-the-formation-of-dark-interlayer-excitons-via-ultrafast-photocurrent.pdf