# Scanning electron irradiation of hexagonal boron nitride: an efficient procedure for quenching undesired defects emissions monitored by <i>in-situ</i> room temperature cathodoluminescence

https://mdr.nims.go.jp/datasets/b83eb92f-30f8-4855-a804-993cbe07fc30

## File

- [Bianco_2025_2D_Mater._12_025026.pdf](https://mdr.nims.go.jp/filesets/4211a302-c12b-472f-8c1d-0323f8b93067/download) ([Detail](https://mdr.nims.go.jp/filesets/4211a302-c12b-472f-8c1d-0323f8b93067.md))

## Id

b83eb92f-30f8-4855-a804-993cbe07fc30

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-05-23T06:58:16.043531Z

## Updated at

2026-05-25T00:06:19.426356Z

## Published at

2026-05-25T01:29:21.449580Z

## Doi



## First published url

https://doi.org/10.1088/2053-1583/adc119

## Date published

2025-04-01

## Recorded date published

2025-4-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Scanning electron irradiation of hexagonal boron nitride: an efficient procedure
    for quenching undesired defects emissions monitored by <i>in-situ</i> room temperature
    cathodoluminescence'
  title_type: original
  lang: en

## Description

- description: Recently, layered materials have become an interesting platform for
    quantum optics and nanophotonics. Among them, hexagonal boron nitride (hBN) has
    attracted a widespread interest due to its peculiar defect-related luminescence
    properties. In particular, the possible generation and tailoring of color centers
    by particle irradiation are becoming pivotal aspects for next generation quantum
    optics and photonics. In this work, we use in-situ cathodoluminescence hyperspectral
    analysis to investigate the effect of fast-scanning, low-voltage electron irradiation
    on deep level emissions in the UV range. The quenching of the UV band and changes
    in the width of the near-band-edge UV luminescence of hBN are investigated as
    a function of the irradiation time. This quenching is assigned to the electron
    beam dissociation of in-plane carbon dimer, responsible for such emission, with
    a concurrent carbon atoms reconfiguration in non-radiative complexes involving
    vacancies or interstitials, as demonstrated by the intensity decrease of below
    bandgap photoluminescence emissions. Raman spectroscopy reveals an important deposition
    of amorphous carbon on top of the hBN flake.
  description_type: abstract
  lang: und

## Creator

- name: F Bianco
  role: author
- name: S Pezzini
  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: F Fabbri
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: 'hexagonal boron nitride (hBN)
    '
  schema: not_defined
- subject: electron irradiation
  schema: not_defined
- subject: cathodoluminescence
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-03-26

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: 2D Materials
  issn: '20531583'
  volume: '12'
  issue: '2'
  article_number: '025026'

## Conference



## Related item



## Funding

- funder_name: Agency for Cultural Affairs, Government of Japan
- identifier: JPMJCR24A5
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Japan Science and Technology Corporation
- 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: 4211a302-c12b-472f-8c1d-0323f8b93067
  filename: Bianco_2025_2D_Mater._12_025026.pdf
  content_type: application/pdf
  size: 2368316
  md5: 39956b2a37f3d04de4131be96ec67d75

## Thumbnail

fileset_id: 4211a302-c12b-472f-8c1d-0323f8b93067
filename: Bianco_2025_2D_Mater._12_025026.pdf