# Effects of low work-function lanthanum oxides on stable electron field emissions from nanoscale emitters

https://mdr.nims.go.jp/datasets/4911259c-455a-4749-a6e0-821fb5cd68a1

## File

- [NADV_4_4669_2022.pdf](https://mdr.nims.go.jp/filesets/371a6bc3-05fe-4167-b7c3-8fbb8815133d/download) ([Detail](https://mdr.nims.go.jp/filesets/371a6bc3-05fe-4167-b7c3-8fbb8815133d.md))

## Id

4911259c-455a-4749-a6e0-821fb5cd68a1

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-05-11T00:52:42.802827Z

## Updated at

2026-05-11T07:26:20.893968Z

## Published at

2026-05-11T09:28:10.232348Z

## Doi



## First published url

https://doi.org/10.1039/d2na00536k

## Date published

2022-10-11

## Recorded date published

2022-10-25

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effects of low work-function lanthanum oxides on stable electron field emissions
    from nanoscale emitters
  title_type: original
  lang: en

## Description

- description: Nanoscale electron field emitters are known to produce more stable
    electron emissions than conventional emitters. This has been attributed to size
    effects; nanoscale emitters can operate with a small emission current and a low
    extraction voltage, which reduces the bombardment of residual gas ions on the
    emitter tip. However, our experiments discovered that nanoscale LaB6 emitters
    had extremely stable emissions, suggesting that chemical effects are present in
    addition to size effects. This suggests that during operations, a material other
    than LaB6 may be deposited on the surface of the tip to enhance the stability
    of emissions. Therefore, we searched for possible materials theoretically within
    the La-B-O ternary system and found that lanthanum oxides (LaO) and oxygen-deficient
    La2O3 (La2O3−x) had good electrical conductivity and a low work function comparable
    to that of LaB6. These lanthanum oxides are chemically less reactive to residual
    gases than LaB6. Thus, if they are present on the LaB6 surface, they could stabilize
    electron emissions without diminishing emission performance. These findings suggest
    that lanthanum oxides could be used for electron field emitters.
  description_type: abstract
  lang: und

## Creator

- name: Wataru Hayami
  role: author
  orcid: https://orcid.org/0000-0003-0497-8690
  organization: National Institute for Materials Science
- name: Shuai Tang
  role: author
- name: Jie Tang
  role: author
  orcid: https://orcid.org/0000-0002-5871-5776
  organization: National Institute for Materials Science
- name: Lu-Chang Qin
  role: author

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: Lanthanum oxide
  schema: not_defined
- subject: field emission
  schema: not_defined
- subject: electron emitter
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/3.0/
  date_licensed: 2022-10-11

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nanoscale Advances
  issn: '25160230'
  volume: '4'
  start_page: 4669
  end_page: 4676

## Conference



## Related item



## Funding



## 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: 371a6bc3-05fe-4167-b7c3-8fbb8815133d
  filename: NADV_4_4669_2022.pdf
  content_type: application/pdf
  size: 1448912
  md5: 108adfd00ee6b12e547f1c10b6cd350b

## Thumbnail

fileset_id: 371a6bc3-05fe-4167-b7c3-8fbb8815133d
filename: NADV_4_4669_2022.pdf