Analysis of the Behavior of Individual Emission Sites on the Surface of a Multi-Tip Field Cathode

被引：3
作者：
Kolosko, A. G. [1 ]
Popov, E. O. [1 ]
Filippov, S. V. [1 ]
机构：
[1] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
TECHNICAL PHYSICS LETTERS | 2019年 / 45卷 / 03期
关键词：
WORK FUNCTION;
D O I：
10.1134/S1063785019030283
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A method of analysis of the surface of multi-tip field cathodes using data obtained with the aid of a computer-controlled field emission projector and a system of fast high-voltage scanning is described. An investigation of a polymer/carbon nanotube composite field electron emitter by this method was used to determine the distribution of individual emission sites over the surface of a multi-tip field cathode and to estimate variation of the work function of separate emission sites depending on the applied voltage. The contributions of separate groups of emission sites to a change of the shape of current-voltage characteristic of a multi-tip cathode have been numerically estimated.
引用
收藏
页码：304 / 307
页数：4
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