# Photo-thermoelectric effect-driven detection of optical communication light in graphene/hBN heterostructures

https://mdr.nims.go.jp/datasets/c3bd862a-79bc-452e-97f0-f0732ae4b33f

## File

- [GrPDt8_Clean_JJAP2.pdf](https://mdr.nims.go.jp/filesets/99292dfa-f02b-430d-a07a-b0ff3e112d4b/download) ([Detail](https://mdr.nims.go.jp/filesets/99292dfa-f02b-430d-a07a-b0ff3e112d4b.md))

## Id

c3bd862a-79bc-452e-97f0-f0732ae4b33f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-03-18T02:54:25.263525Z

## Updated at

2025-03-06T03:30:21.370893Z

## Published at

2025-03-06T03:30:21.674649Z

## Doi

https://doi.org/10.48505/nims.5232

## First published url

https://doi.org/10.35848/1347-4065/ad2bd6

## Date published

2024-03-01

## Recorded date published

2024-3-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Photo-thermoelectric effect-driven detection of optical communication light
    in graphene/hBN heterostructures
  title_type: original
  lang: en

## Description

- description: "We report on the photodetection properties of high-quality graphene
    encapsulated by hexagonal boron nitride under illumination with optical communication
    light. We demonstrate a gate-tunable photocurrent and zero-bias switching cycle
    operation at room temperature. Through gate- and temperature-dependent photocurrent
    measurements, we determine that the dominant photoresponse mechanism is the photo-thermoelectric
    effect.\r\nAt low temperatures, the photocurrent in finite doping regions correlates
    with the Seebeck coefficient, while\r\nsharp peaks emerge near the charge neutrality
    point due to an edge-excited photocurrent. Our study provides guidelines for high-performance
    graphene-based optoelectronic devices."
  description_type: abstract
  lang: und

## Creator

- name: Takuya Iwasaki
  role: author
  orcid: https://orcid.org/0000-0002-1103-2433
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yodai Sato
  role: author
- name: Makoto Ogo
  role: author
- name: Byunghun Oh
  role: author
- name: Daichi Kozawa
  role: author
  orcid: https://orcid.org/0000-0002-0629-5589
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Ryo Kitaura
  role: author
  orcid: https://orcid.org/0000-0001-8108-109X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- 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: Satoshi Moriyama
  role: author
  orcid: https://orcid.org/0000-0001-6599-6433
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Junichi Fujikata
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: graphene/hBN heterostructure
  schema: not_defined
- subject: photodetector
  schema: not_defined
- subject: photo-thermoelectric effect
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-03-06
end_date: 2025-03-06

## Journal

- title: Japanese Journal of Applied Physics
  issn: '13474065'
  volume: '63'
  issue: '3'
  article_number: '030903'

## Conference



## Related item



## Funding

- identifier: JPMXP1223NM5186
  funder_name: National Institute for Materials Science
- identifier: JP21H01400, JP21H01749, JP22H01555, JP22H01893, JP23H00274, JP23H05469
  funder_name: Japan Society for the Promotion of Science

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## Fileset

- id: 99292dfa-f02b-430d-a07a-b0ff3e112d4b
  filename: GrPDt8_Clean_JJAP2.pdf
  content_type: application/pdf
  size: 1350007
  md5: 8b1089922621ac4a37dc98ea2bb49093

## Thumbnail

fileset_id: 99292dfa-f02b-430d-a07a-b0ff3e112d4b
filename: GrPDt8_Clean_JJAP2.pdf