Study on the Parameters of Surface potential Barrier of NEA GaAs Photocathode

摘要：

According to the ratio of the maximum values of photocurrents arising during the single Cs activation and the Cs-O activation phase for NEA GaAs photocathode, and combining the theoretical energy distributions of the electrons tunneling through the single and double potential barriers, a new method for evaluating the parameters of surface potential barrier of NEA GaAs photocathode was presented. The results obtained by this method greatly accord with the double-dipole model theory, and are in agreement with the results obtained by fitting the experimental curve for electrons energy distribution. The method is simple and available, and enriches one cheap approach for evaluating the activation effect and the surface characteristics of NEA GaAs photocathodes.

关键词： GaAs Photocathode Surface potential Barrier Energy distribution

作者: Jun Niu Dayong Huang Yijun Zhang Benkang Chang

作者单位: Department of Electron and Electric Nanyang Institute of Technology Nanyangjienan Province, 473004, School of Electronic Engineering and Optoelectronic Technology Nanjing University of Science and Tec

会议类型: 国际会议

会议名称: 2010 International Conference on Smeiconductor Laser and Photonics(2010年半导体激光与光子学国际会议 ICSLP 2010)

会议地点: 成都

会议语种:英文

页码: 25-28

在线出版日期: 2010-10-25（万方平台首次上网日期，不代表论文的发表时间）