Properties and stability of single-atom field emitters

被引：3
|
作者：
Yu, ML
Chang, THP
机构：
[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China
[2] Etec Syst, Hayward, CA 94545 USA
来源：
APPLIED SURFACE SCIENCE | 1999年 / 146卷 / 1-4期
关键词：
field emission; single-atom tips; emission stability; electron energy distribution;
D O I：
10.1016/S0169-4332(99)00003-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have successfully produced single-atom W < 111 >, HfC < 100 >, and ZrC < 100 > tips using the field-induced buildup technique. The cold field emission characteristics of these tips were studied with particular emphasis on the emission stability and the energy distribution of the emitted electrons. W < 111 > tips were the least stable. Reaction with acetylene improved the emission stability for all these tips. We observed multiple peaks in the energy distributions of emitted electrons from single-atom HfC < 100 > and ZrC < 100 > tips. The separations between the peaks are in the order of half electron volt. Possible origin of the multiple peaks is discussed. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：334 / 340
页数：7
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