光电阴极的研究进展  

Research Progress of Photocathode

作　　者：石文奇 张连正 陆玉新[2] 田宏 朱虹 赵恒邦 王小霞 刘燕文 SHI Wen-qi;ZHANG Lian-zheng;LU Yu-xin;TIAN Hong;ZHU Hong;ZHAO Heng-bang;WANG Xiao-xia;LIU Yan-wen(Aerospace Information Research Institute,Chinese Academy of Science,Beijing 100080,China;Tianjin Traffic Vocational Institute,Tianjin 300110,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院空天信息创新研究院,北京100190 [2]天津交通职业学院,天津300110 [3]中国科学院大学,北京100049

出　　处：《真空》2020年第3期42-48,共7页Vacuum

基　　金：国家自然科学基金项目(批准号:61771454);总装预研基金项目(批准号31512010404-1)。

摘　　要：光电阴极的材料决定了光电发射的量子效率、暗发射电流和出射电子能量分布等重要性能。本文介绍各种类型的光电阴极发射材料,包括碱金属和半导体材料。其中重点介绍半导体材料中的多碱光电阴极和负电子亲和势(NEA)光电阴极,并对多碱光电阴极的制备流程及性能测试和影响NEA光电阴极量子效率等因素进行详细的分析。The material of photocathode determines the important properties of photoemission,such as quantum efficiency,dark emission current and energy distribution of emitted electrons. Various types of photocathode emission materials,including alkali metal and semiconductor materials,are introduced in this paper. Among them,the multi-alkali photocathode and negative electron affinity(NEA) photocathode in semiconductor materials are mainly introduced,and the preparation process and performance test of the multi-alkali photocathode and the factors affecting the quantum efficiency of NEA photocathode are analyzed in detail.

关 键 词：光电发射 多碱光电阴极 NEA光电阴极 量子效率 

分 类 号：O462.3[理学—电子物理学]