# Fabrication of monolayer h-BN/LaB6 heterostructure thin film with low work function and high chemical stability

https://mdr.nims.go.jp/datasets/8d927b70-baf8-49b4-a8c1-d2a4233cf70a

## Files

- [Fabrication of monolayer h-BN_LaB6 heterostructure thin film with low work function and high chemical stability.pdf](https://mdr.nims.go.jp/filesets/a60c30ce-e0a1-49f4-b9f5-efcfe09d9652/download) ([Detail](https://mdr.nims.go.jp/filesets/a60c30ce-e0a1-49f4-b9f5-efcfe09d9652.md))

## Id

8d927b70-baf8-49b4-a8c1-d2a4233cf70a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-06-18T07:27:50.363950Z

## Updated at

2024-06-19T07:30:16.115233Z

## Published at

2024-06-19T07:30:16.421247Z

## Doi



## First published url

https://doi.org/10.1016/j.apsusc.2024.160478

## Date published

2024-06-06

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Fabrication of monolayer h-BN/LaB6 heterostructure thin film with low work
    function and high chemical stability
  title_type: original
  lang: en

## Description

- description: To expand the applications of low work function materials, high chemical
    stability is necessary to prevent the surface from unfavorable reactions. We developed
    a 20-nm-thick LaB6 thin film covered by a monolayer h-BN, which exhibits not only
    low work function but also high chemical stability. Results demonstrated that
    the h-BN/LaB6 heterostructure can be formed by vacuum annealing a nitrogen-doped
    LaB6 thin film. The formation process was investigated using AES, HREELS, and
    XANES spectroscopy. We have elucidated that the doped nitrogen atoms and boron
    atoms in the film thermally diffuse into the surface during annealing, thereby
    forming the monolayer h-BN on the surface. Work function was measured using STM.
    From a practical perspective, chemical stability was evaluated with a heating
    temperature necessary for restoring the low work function state after air exposure.
    The work function was comparable to that of the clean LaB6(100) surface. Moreover,
    it recovered at a much lower temperature than the cleaning temperature of the
    LaB6(100) surface. We anticipate that this material development will facilitate
    implementation of the low work function material.
  description_type: abstract
  lang: und

## Creator

- name: Katsumi Nagaoka
  role: author
  orcid: https://orcid.org/0000-0001-6746-5329
- name: Takashi Aizawa
  role: author
  orcid: https://orcid.org/0000-0003-2357-5336
- name: Shun-ichiro Ohmi
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: heterostructure thin film
  schema: not_defined
- subject: lanthanum hexaboride (LaB6)
  schema: not_defined
- subject: low work function
  schema: not_defined
- subject: monolayer hexagonal boron nitride (h-BN)
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Applied Surface Science
  issn: '01694332'
  volume: '669'
  article_number: '160478'

## Conference



## Related item



## Funding

- identifier: 17K05066,
  funder_name: JSPS
- identifier: 19H00758
  funder_name: JSPS
- identifier: 15K13969
  funder_name: JSPS

## 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: a60c30ce-e0a1-49f4-b9f5-efcfe09d9652
  filename: Fabrication of monolayer h-BN_LaB6 heterostructure thin film with low
    work function and high chemical stability.pdf
  content_type: application/pdf
  size: 4022525
  md5: b6adf0870a4c2540ecde1564991fbbd9

## Thumbnail

fileset_id: a60c30ce-e0a1-49f4-b9f5-efcfe09d9652
filename: Fabrication of monolayer h-BN_LaB6 heterostructure thin film with low work
  function and high chemical stability.pdf