Stability and photoemission characteristics for GaAs photocathodes in a demountable vacuum system

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	Stability and photoemission characteristics for GaAs photocathodes in a demountable vacuum system
	Zou JJ ; Chang BK ; Yang Z ; Qiao JL ; Zeng YP
刊名	applied physics letters
	2008
卷号	92 期号:17 页码:art. no. 172102
关键词	ELECTRON-AFFINITY PHOTOCATHODES
ISSN号	0003-6951
通讯作者	zou, jj, nanjing univ sci & technol, inst elect engn & optoelect technol, nanjing 210094, jiangsu, peoples r china. 电子邮箱地址: bkchang@mail.njust.edu.cn
中文摘要	the stability and photoemission characteristics for reflection-mode gaas photocathodes in a demountable vacuum system have been investigated by using spectral response and x-ray photoelectron spectroscopy measurements at room temperature. we find that the shape of the spectral response curve for the cathode changes with time in the vacuum system, but after applying fresh cesium to the degraded cathode, the spectral response can almost be restored. the change and restoration of curve shape are mainly attributed to the evolution of the surface barrier. we illustrate the evolution and analyze the influence of the barrier on the spectral response of the cathode. (c) 2008 american institute of physics.
学科主题	半导体材料
收录类别	SCI
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/6700]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Zou JJ,Chang BK,Yang Z,et al. Stability and photoemission characteristics for GaAs photocathodes in a demountable vacuum system[J]. applied physics letters,2008,92(17):art. no. 172102.
APA	Zou JJ,Chang BK,Yang Z,Qiao JL,&Zeng YP.(2008).Stability and photoemission characteristics for GaAs photocathodes in a demountable vacuum system.applied physics letters,92(17),art. no. 172102.
MLA	Zou JJ,et al."Stability and photoemission characteristics for GaAs photocathodes in a demountable vacuum system".applied physics letters 92.17(2008):art. no. 172102.