# Air tightness of hBN encapsulation and its impact on Raman spectroscopy of van der Waals materials

https://mdr.nims.go.jp/datasets/ec903335-355d-4ca0-bd37-03beeae6d13d

## File

- [Holler_2020_2D_Mater._7_015012.pdf](https://mdr.nims.go.jp/filesets/f4cb6b24-b54e-4081-a54b-c5c96898cf0b/download) ([Detail](https://mdr.nims.go.jp/filesets/f4cb6b24-b54e-4081-a54b-c5c96898cf0b.md))

## Id

ec903335-355d-4ca0-bd37-03beeae6d13d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-25T01:02:09.655324Z

## Updated at

2025-02-25T23:30:26.054422Z

## Published at

2025-02-25T23:30:26.188936Z

## Doi



## First published url

https://doi.org/10.1088/2053-1583/ab4723

## Date published

2020-01-01

## Recorded date published

2020-1-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Air tightness of hBN encapsulation and its impact on Raman spectroscopy of
    van der Waals materials
  title_type: original
  lang: en

## Description

- description: Raman spectroscopy is a precious tool for the characterization of van
    der Waals materials, e.g. for the determination of the layer number in thin exfoliated
    flakes. For sensitive materials, however, this method might turn out to be dramatically
    invasive. In particular, the light intensity required to obtain a significant
    Raman signal is sufficient to immediately photo-oxidize few-layer thick metallic
    van der Waals materials. In this work we investigated the impact of the environment
    on Raman characterization of thin NbSe2 crystals. We show that in ambient conditions
    the flake is locally oxidized even for very low illumination intensity. On the
    other hand, we observe no degradation if the Raman measurements are performed
    either in vacuum or on fully hBN-encapsulated samples. Interestingly, we find
    that covering the samples only from the top is not sufficient to prevent diffusion
    of oxygen within the layers.
  description_type: abstract
  lang: und

## Creator

- name: Johannes Holler
  role: author
- name: Lorenz Bauriedl
  role: author
- name: Tobias Korn
  role: author
- name: Andrea Seitz
  role: author
- name: Furkan Özyigit
  role: author
- name: Michaela Eichinger
  role: author
- name: Christian Schüller
  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: Christoph Strunk
  role: author
- name: Nicola Paradiso
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Raman spectroscopy
  schema: not_defined
- subject: van der Waals materials
  schema: not_defined
- subject: photo-oxidation
  schema: not_defined

## Rights

- identifier: cc-by-3.0

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: 2D Materials
  issn: '20531583'
  volume: '7'
  issue: '1'
  article_number: '015012'

## Conference



## Related item



## Funding

- identifier: GRK1570
  funder_name: Deutsche Forschungsgemeinschaft

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: f4cb6b24-b54e-4081-a54b-c5c96898cf0b
  filename: Holler_2020_2D_Mater._7_015012.pdf
  content_type: application/pdf
  size: 753943
  md5: b5bda76508b1c3b72c5a4208d371b551

## Thumbnail

fileset_id: f4cb6b24-b54e-4081-a54b-c5c96898cf0b
filename: Holler_2020_2D_Mater._7_015012.pdf