Initiation of vacuum breakdown and failure mechanism of the carbon nanotube during thermal field emission

被引：2

作者：

Cai, Dan ^{[1
]}

Liu, Lie ^{[1
]}

Ju, Jin-Chuan ^{[1
]}

Zhao, Xue-Long ^{[1
]}

Zhou, Hong-Yu ^{[1
]}

Wang, Xiao ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

[2] 78010 PLA Troops, Chengdu 610000, Peoples R China

来源：

CHINESE PHYSICS B | 2016年 / 25卷 / 04期

基金：

中国国家自然科学基金;

关键词：

carbon nanotube; thermal field electron emission; vacuum breakdown; failure mechanism; X-RAY SOURCE; ELECTRON-EMISSION; COLD-CATHODE; MICROWAVE PULSE; LARGE-AREA; PLASMA; EMITTERS; ARRAYS; MICROSCOPY; SOLIDS;

D O I：

10.1088/1674-1056/25/4/045101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The carbon nanotube (CNT)-based materials can be used as vacuum device cathodes. Owing to the excellent field emission properties of CNT, it has great potentials in the applications of an explosive field emission cathode. The falling off of CNT from the substrate, which frequently appears in experiments, restricts its application. In addition, the onset time of vacuum breakdown limits the performance of the high-power explosive-emission-cathode-based diode. In this paper, the characteristics of the CNT, electric field strength, contact resistance and the kind of substrate material are varied to study the parameter effects on the onset time of vacuum breakdown and failure mechanism of the CNT by using the finite element method.

引用

页数：8

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