# Short excitonic lifetimes of MoSe<sub>2</sub> monolayers grown by molecular beam epitaxy on the hexagonal boron nitride

https://mdr.nims.go.jp/datasets/8de1f976-35d0-403c-8634-7e53fcf31633

## File

- [Oreszczuk_2024_2D_Mater._11_025029.pdf](https://mdr.nims.go.jp/filesets/e961ee33-c936-4b67-bc5f-aa5ad7593e95/download) ([Detail](https://mdr.nims.go.jp/filesets/e961ee33-c936-4b67-bc5f-aa5ad7593e95.md))

## Id

8de1f976-35d0-403c-8634-7e53fcf31633

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-13T05:51:44.548675Z

## Updated at

2025-02-14T03:30:30.856453Z

## Published at

2025-02-14T03:30:31.146557Z

## Doi



## First published url

https://doi.org/10.1088/2053-1583/ad3135

## Date published

2024-04-01

## Recorded date published

2024-4-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Short excitonic lifetimes of MoSe<sub>2</sub> monolayers grown by molecular
    beam epitaxy on the hexagonal boron nitride
  title_type: original
  lang: en

## Description

- description: We present a time-resolved optical study of recently developed narrow-line
    MoSe2 monolayers grown on hexagonal boron nitride with means of Molecular Beam
    Epitaxy. We find that the photo- luminescence decay times are significantly shorter
    than in the case of the exfoliated samples, even below one picosecond. Such a
    short timescale requires measurements with better resolution than achievable with
    a streak camera. Therefore, we employ an Excitation Correlation Spectroscopy (ECS)
    pump-probe technique. This approach allows us to identify two distinct non-radiative
    re- combination channels attributed to lattice imperfections. The first channel
    is active at helium temperatures. It reduces the lifetime of the neutral exciton
    to below one picosecond. The second channel becomes active at elevated temperatures,
    further shortening the lifetimes of both neutral and charged exciton. The high
    effectiveness of both radiative and non-radiative recombination makes epitaxial
    MoSe2 a promising material for ultrafast optoelectronics.
  description_type: abstract
  lang: und

## Creator

- name: Kacper Oreszczuk
  role: author
- name: Wojciech Pacuski
  role: author
- name: Aleksander Rodek
  role: author
- name: Mateusz Raczyński
  role: author
- name: Tomasz Kazimierczuk
  role: author
- name: Karol Nogajewski
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Marek Potemski
  role: author
- name: Piotr Kossacki
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: MoSe2 monolayers
  schema: not_defined
- subject: photoluminescence decay
  schema: not_defined
- subject: non-radiative recombination
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: 2D Materials
  issn: '20531583'
  volume: '11'
  issue: '2'
  article_number: '025029'

## Conference



## Related item



## Funding

- funder_name: EU Graphene Flagship project
- funder_name: World Premier International Research Center Initiative
- identifier: 2021/41/B/ST3/04183
  funder_name: National Science Centre, Poland
- identifier: 21H05233
  funder_name: JSPS KAKENHI

## 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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## Custom property



## Fileset

- id: e961ee33-c936-4b67-bc5f-aa5ad7593e95
  filename: Oreszczuk_2024_2D_Mater._11_025029.pdf
  content_type: application/pdf
  size: 922847
  md5: 5eefd7ce56aebd124e8be15c4db448f7

## Thumbnail

fileset_id: e961ee33-c936-4b67-bc5f-aa5ad7593e95
filename: Oreszczuk_2024_2D_Mater._11_025029.pdf