# Optical grade transformation of monolayer transition metal dichalcogenides <i>via</i> encapsulation annealing

https://mdr.nims.go.jp/datasets/ffc0eded-ad62-4c77-a566-bad576accb13

## Files

- [d3nr06641j.pdf](https://mdr.nims.go.jp/filesets/e8e8b719-b280-4d21-8c25-cefb2e57d92e/download) ([Detail](https://mdr.nims.go.jp/filesets/e8e8b719-b280-4d21-8c25-cefb2e57d92e.md))

## Id

ffc0eded-ad62-4c77-a566-bad576accb13

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-14T06:51:56.629373Z

## Updated at

2025-02-15T03:30:34.785240Z

## Published at

2025-02-15T03:30:34.950033Z

## Doi



## First published url

https://doi.org/10.1039/d3nr06641j

## Date published

2024-02-26

## Recorded date published

2024-3-14

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Optical grade transformation of monolayer transition metal dichalcogenides
    <i>via</i> encapsulation annealing
  title_type: original
  lang: en

## Description

- description: Monolayer transition metal dichalcogenides (TMDs) have emerged as highly
    promising candidates for optoelectronic applications due to their direct band
    gap and strong light-matter interactions. However, exfoliated TMDs have demonstrated
    optical characteristics that fall short of expectations, primarily because of
    significant defects and associated doping in the synthesized TMD crystals. Here,
    we report improvement of optical properties in monolayer TMDs of MoS2, MoSe2,
    WS2, and WSe2, by hBN-encapsulation annealing. Monolayer WSe2 showed 2,000 % enhancement
    of photoluminescence quantum yield (PLQY) and 1,000 % increase of prolonged lifetime
    after encapsulation annealing at 1000°C, which are attributed to dominant radiative
    recombination of excitons through dedoping of exfoliated monolayer TMDs. Furthermore,
    after encapsulation annealing, the transport characteristics of monolayer WS2
    ¬changed from n-type to ambipolar, along with an enhanced hole transport, which
    also support dedoping of annealed TMDs. This work provides an innovative approach
    to elevate the optical grade of monolayer TMDs, enabling the fabrication of high-performance
    optoelectronic devices.
  description_type: abstract
  lang: und

## Creator

- name: Huije Ryu
  role: author
- name: Seong Chul Hong
  role: author
- name: Kangwon Kim
  role: author
- name: Yeonjoon Jung
  role: author
- name: Yangjin Lee
  role: author
- name: Kihyun Lee
  role: author
- name: Youngbum Kim
  role: author
- name: Hyunjun Kim
  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: Jeongyong Kim
  role: author
- name: Kwanpyo Kim
  role: author
- name: Hyeonsik Cheong
  role: author
- name: Gwan-Hyoung Lee
  role: author

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: Monolayer TMDs
  schema: not_defined
- subject: optical properties
  schema: not_defined
- subject: hBN-encapsulation
  schema: not_defined

## Rights

- identifier: cc-by-nc-3.0

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nanoscale
  issn: '20403372'
  volume: '16'
  issue: '11'
  start_page: 5836
  end_page: 5844

## Conference



## Related item



## Funding

- identifier: NRF-2021R1A2C301431613
  funder_name: National Research Foundation of Korea
- identifier: NRF-2019R1A2C3006189
  funder_name: National Research Foundation of Korea
- identifier: NRF-2017R1A5A1014862
  funder_name: National Research Foundation of Korea
- funder_name: Seoul National University
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 2017R1A5A1014862
  funder_name: Ministry of Science and ICT
- identifier: 2019R1A2C3006189
  funder_name: Ministry of Science and ICT
- identifier: 2021R1A2C301431613
  funder_name: Ministry of Science and ICT
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science

## 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: e8e8b719-b280-4d21-8c25-cefb2e57d92e
  filename: d3nr06641j.pdf
  content_type: application/pdf
  size: 2352584
  md5: 1fc00430e5a98940deb283bf4bea0a88

## Thumbnail

fileset_id: e8e8b719-b280-4d21-8c25-cefb2e57d92e
filename: d3nr06641j.pdf