# Midgap radiative centers in carbon-enriched hexagonal boron nitride

https://mdr.nims.go.jp/datasets/64a08a29-2862-4a0c-a031-dd83c987d249

## File

- [13214.full.pdf](https://mdr.nims.go.jp/filesets/85ad155e-08dc-4c61-be7f-639b42b8c66b/download) ([Detail](https://mdr.nims.go.jp/filesets/85ad155e-08dc-4c61-be7f-639b42b8c66b.md))

## Id

64a08a29-2862-4a0c-a031-dd83c987d249

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T07:59:24.186726Z

## Updated at

2025-02-28T07:30:43.918124Z

## Published at

2025-02-28T07:30:43.996190Z

## Doi



## First published url

https://doi.org/10.1073/pnas.2003895117

## Date published

2020-06-16

## Recorded date published

2020-6-16

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Midgap radiative centers in carbon-enriched hexagonal boron nitride
  title_type: original
  lang: en

## Description

- description: 'When serving as a protection tissue and/or inducing a periodic lateral
    modulation for/in atomically thin crystals, hexagonal boron nitride, hBN, has
    revolutionised the research on van der Waals heterostructures. By itself, hBN
    appears as an emergent wide‐bandgap material which, importantly, can be optically
    bright in the far UV range and which frequently displays the mid‐gap defect‐related
    centres of yet unclear origin but, interestingly, acting as single photon emitters.
    Controlling the hBN doping is of particular interest in view of possible practical
    use of this material. Here we demonstrate that enriching hBN with carbon (C) activates
    an optical response of this material in form of a series of well‐defined resonances
    in visible and near‐infrared region, which appear in the luminescence spectra
    measured under below‐bandgap excitation. Two, qualitatively different C‐related
    radiative centres are identified: one follows the Franck‐Condon principle that
    describes transitions between two defect states with emission/annihilation of
    optical phonons and the other shows atomic‐like resonances characteristic of intra‐defect
    transitions. With the detailed characterisation of the energy structure and emission
    dynamics of these radiative centres we contribute to development of the controlled
    doping of hBN with mid‐gap centres.'
  description_type: abstract
  lang: und

## Creator

- name: Maciej Koperski
  role: author
- name: Diana Vaclavkova
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kostya S. Novoselov
  role: author
- name: Marek Potemski
  role: author

## Contact agent



## Publisher

organization: Proceedings of the National Academy of Sciences

## Managing organization



## Keyword

- subject: Defect centers
  schema: not_defined
- subject: hexagonal boron nitride
  schema: not_defined
- subject: single-photon sources
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Proceedings of the National Academy of Sciences
  issn: '10916490'
  volume: '117'
  issue: '24'
  start_page: 13214
  end_page: 13219

## Conference



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 85ad155e-08dc-4c61-be7f-639b42b8c66b
  filename: 13214.full.pdf
  content_type: application/pdf
  size: 960172
  md5: 87c3d843d2c37145acce7e01b7da648c

## Thumbnail

fileset_id: 85ad155e-08dc-4c61-be7f-639b42b8c66b
filename: 13214.full.pdf