INFLUENCE OF OXYGEN-ADSORPTION ON FIELD-STIMULATED EXOELECTRON EMISSION FROM HIGH-PURITY ALUMINUM

被引：6
作者：
TAGAWA, M
MORI, M
OHMAE, N
UMENO, M
机构：
[1] Department of Precision Engineering, Faculty of Engineering, Osaka University, Suita, Osaka, 565
来源：
APPLIED SURFACE SCIENCE | 1993年 / 72卷 / 03期
关键词：
D O I：
10.1016/0169-4332(93)90195-H
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：
The emission properties of field-stimulated exoelectron emission from high-purity aluminum upon exposure to oxygen were studied. Three emission parameters, i.e., the rate of excitation, the rate of emission, and the number of trap sites were calculated by means of a new method which is based upon the two-process model. The enhancement of exoelectron emission by oxygen adsorption is due to the increase of electron traps on the tip surface. The energy levels of the traps formed by oxygen adsorption were measured to be -3.62 and -4.00 eV from the vacuum level.
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页码：259 / 265
页数：7
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