Effect of Microimpurities on the Electronic Structure and Emission Properties of Microwave Device Cathode Materials
- 作者: Kapustin V.1,2, Li I.1, Shumanov A.1, Moskalenko S.1, Svitov V.2
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隶属关系:
- AO Pluton
- Russian Technological University MIREA
- 期: 卷 10, 编号 5 (2019)
- 页面: 1065-1071
- 栏目: Electronic Engineering Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/208072
- DOI: https://doi.org/10.1134/S2075113319050113
- ID: 208072
如何引用文章
详细
The effect of microimpurities on the electronic structure of barium oxide has been studied using optical and electron spectroscopy. As was shown previously, oxygen vacancies play a decisive role in the formation of the emission properties of barium oxide crystallites; however, the possible role of microimpurities in barium oxide crystallites was not considered. It has been established that some microimpurities, including nickel, scandium, and combination of calcium and strontium, order oxygen vacancies in barium oxide crystallites, which directly affects oxygen diffusion in them. Nickel and scandium impurities form additional surface states near the edge of the valence band, which is accompanied by a decrease in the electronic work function of a cathode material.
作者简介
V. Kapustin
AO Pluton; Russian Technological University MIREA
编辑信件的主要联系方式.
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120; Moscow, 119434
I. Li
AO Pluton
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
A. Shumanov
AO Pluton
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
S. Moskalenko
AO Pluton
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
V. Svitov
Russian Technological University MIREA
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 119434