MgO薄膜次级电子发射材料研究现状与展望  

Research Status and Prospect of MgO Thin Films as Secondary Electron Emission Materials

作　　者：周帆[1] 王蕊 梁轩铭 刘伟[1] 王金淑[1] ZHOU Fan;WANG Rui;LIANG Xuanming;LIU Wei;WANG Jinshu(College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学材料科学与工程学院,北京100124

出　　处：《北京工业大学学报》2020年第10期1128-1138,共11页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(51404015);北京市属高校高水平教师队伍建设支持计划高水平创新团队建设计划资助项目(IDHT20170502)。

摘　　要：次级电子发射是一种涉及带电粒子与固体表面间相互作用的复杂过程.MgO薄膜具有较高的次级电子发射系数和化学稳定性,在多种光电倍增管、交流等离子平板显示器中具有广泛应用.主要介绍次级电子发射的基本原理、MgO薄膜次级电子发射材料的发展演变,并结合本课题组的研究工作,重点介绍具有高次级发射系数的MgO及掺杂MgO次级电子发射材料的研究进展.最后对次级电子发射材料的需求与发展趋势进行展望.Secondary electron emission(SEE)is a complicated process involving interaction between charged particles and solid surface.Due to advantages of high secondary electron yields(δ)and chemical stability,MgO thin films have broad applications in various photomultiplier tubes(PMT)and AC plasma display panels.The fundamental principles of SEE and the development of MgO thin films related SEE materials over the last several decades were reviewed in this paper.Based on literature review and previous research work in our group,the development of MgO and doped MgO thin films with high δ was presented.Finally,requirements and prospects for SEE materials nowadays were summarized.

关 键 词：次级电子发射 MgO薄膜 次级发射系数 光电倍增管 掺杂 研究进展 

分 类 号：O462.2[理学—电子物理学] TN15[理学—物理]