摘要
由于具有低温、电子瞬间发射等优势,场致发射电子源在X射线管、负氢离子源、显示器件等领域都具有应用潜力。本文首先介绍了场致发射的几种应用;比较分析了不同场致发射电子源及其特点;最后结合实验研究工作,分析了类金刚石膜作为场致发射阴极材料的可行性。分析可知:Spindt加工困难且易于损坏;碳纳米管以其独特的结构成为目前研究最热的材料;类金刚石膜易于合成、成份可调节,它兼具的金刚石和石墨的优点使其成为一种潜在的理想场致发射阴极材料。
Field emission electron sources have been found potential applications in X-ray tube, negative hydrogen ion source,display devices and other fields because of its several merits. In this paper, several applications of field electron emission are introduced firstly. Different field emission electron sources and their characteristics are compared and analyzed. Finally, the feasibility of using diamond like carbon film as cathode materials for field electron emission is analyzed on the basis of our experimental research. From the analysis: i) it can be known that Spindt is difficult to fabricate and easy to be damaged;ii)carbon nanotube is the hottest issue in the current research because of its unique structure;iii) diamond like carbon film is easy to be synthesized and the composition can be adjusted. The advantages of both diamond and graphite in diamond like carbon film help it be the potential ideal field electron emission cathode material.
作者
李建
童洪辉
但敏
金凡亚
王坤
陈伦江
LI Jian;TONG Hong-hui;DAN Min;JIN Fan-ya;WANG Kun;CHEN Lun-jiang(Southwestern Institute of Physics,Chengdu 610041,China;The Engineering and Technical College of Chengdu University of Technology,Leshan 614007,China)
出处
《真空》
CAS
2019年第3期27-31,共5页
Vacuum
基金
国家自然科学基金重点项目(11535003)
国家自然科学基金青年基金项目(11805058)
四川省青年科技创新团队项目(2106TD0015)
四川省科技厅重点研发项目(2018GZ0210)
成都理工大学工程技术学院院级基金项目(C122017040)
关键词
场致发射
碳纳米管
金刚石膜
field electron emission
carbon nanotube
diamond film
