# Monolayer WS<sub>2</sub> electro- and photo-luminescence enhancement by TFSI treatment

https://mdr.nims.go.jp/datasets/61b35b78-8032-4fd1-ad9e-e8c6ed6a76a9

## File

- [Cadore_2024_2D_Mater._11_025017.pdf](https://mdr.nims.go.jp/filesets/9688b843-7b35-4aeb-b055-2e564508c832/download) ([Detail](https://mdr.nims.go.jp/filesets/9688b843-7b35-4aeb-b055-2e564508c832.md))

## Id

61b35b78-8032-4fd1-ad9e-e8c6ed6a76a9

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-13T06:21:11.420324Z

## Updated at

2025-02-14T03:30:37.923096Z

## Published at

2025-02-14T03:30:38.051690Z

## Doi



## First published url

https://doi.org/10.1088/2053-1583/ad1a6a

## Date published

2024-04-01

## Recorded date published

2024-4-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Monolayer WS<sub>2</sub> electro- and photo-luminescence enhancement by TFSI
    treatment
  title_type: original
  lang: en

## Description

- description: Layered material heterostructures (LMHs) can be used to fabricate electroluminescent
    devices op- erating in the visible spectral region. A major advantage of LMH-light
    emitting diodes (LEDs) is that electroluminescence (EL) emission can be tuned
    across that of different exciton complexes (e.g. biex- citons, trions, quintons)
    by controlling the charge density. However, these devices have an EL quan- tum
    efficiency as low as∼10−4%. Here, we show that the superacid bis-(triuoromethane)sulfonimide
    (TFSI) treatment of monolayer WS2-LEDs boosts EL quantum efficiency by over one
    order of magnitude at room temperature. Non-treated devices emit light mainly
    from negatively charged ex- citons, while the emission in treated ones predominantly
    involves radiative recombination of neutral excitons. This paves the way to tunable
    and efficient LMH-LEDs.
  description_type: abstract
  lang: und

## Creator

- name: A R Cadore
  role: author
- name: B L T Rosa
  role: author
- name: I Paradisanos
  role: author
- name: S Mignuzzi
  role: author
- name: D De Fazio
  role: author
- name: E M Alexeev
  role: author
- name: A Dagkli
  role: author
- name: J E Muench
  role: author
- name: G Kakavelakis
  role: author
- name: S M Shinde
  role: author
- name: D Yoon
  role: author
- name: S Tongay
  role: author
- name: K Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: T Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: E Lidorikis
  role: author
- name: I Goykhman
  role: author
- name: G Soavi
  role: author
- name: A C Ferrari
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Layered material heterostructures
  schema: not_defined
- subject: electroluminescent devices
  schema: not_defined
- subject: quantum efficiency
  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: '025017'

## Conference



## Related item



## Funding

- identifier: Hetero2D
  funder_name: ERC
- funder_name: EU
- identifier: EP/K017144/1
  funder_name: EP
- funder_name: EPSRC

## 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: 9688b843-7b35-4aeb-b055-2e564508c832
  filename: Cadore_2024_2D_Mater._11_025017.pdf
  content_type: application/pdf
  size: 7704616
  md5: 46a1e3a5a7472483b9462045fb91473d

## Thumbnail

fileset_id: 9688b843-7b35-4aeb-b055-2e564508c832
filename: Cadore_2024_2D_Mater._11_025017.pdf