(HgCd) Te探测器的光吸收系数对其有效Franz-Keldysh偏移的影响

应用科学学报 ›› 1997, Vol. 15 ›› Issue (3): 279-284.

(HgCd) Te探测器的光吸收系数对其有效Franz-Keldysh偏移的影响

叶玉堂, 李家旭, 洪永和, 李忠东, 叶婧, 舒海洪, 李正东

电子科技大学

收稿日期:1995-11-23 修回日期:1996-05-19 出版日期:1997-09-30 发布日期:1997-09-30
作者简介:叶玉堂:教授,电子科技大学光电子技术系,成都 610054
基金资助:
国防科工委资助

THE PHOTON ABSORPTION COEFFICIENT OF (HgCd) Te DETECTORS AND ITS EFFECT ON THE FRANZ-KELDYSH SHIFT OF CUTOFF WAVELENGTH

YE YUTANG, LI JlAXU, HONG YONGHE, LI ZHONGDONG, YE JING, SHU HAIHONG, LI ZHENGDONG

Department of Opto-electronic Technology, University of Electronic Science and Technology of China, Chengdu 610054

Received:1995-11-23 Revised:1996-05-19 Online:1997-09-30 Published:1997-09-30

摘要/Abstract

摘要： 在讨论(HgCd) Te探测器耗尽层宽d和光吸收系a的基础上,导出了探测器截止波长的有效Franz-Keldvsh偏低△λ_ce与a、d的关系式,说明了实验测定的△λ_ce偏低的原因.

关键词: 光吸收系数, (HgCd) Te探测器, Franz-Keldysh效应

Abstract: The width of the depletion region d and the photon absorption coefficient a of the pn⁺ junction (HgCd) Te detectors are calculated. The equation about the relation among a, d and the effetive Franz-Keldysh shift △λ_ce is derived. And an interpretation of tremendous difference between △λ_cm and △λ_ce presented.

Key words: photon absorption coefficient, (HgCd) Te detectors, Franz-Keldysh effect

叶玉堂, 李家旭, 洪永和, 李忠东, 叶婧, 舒海洪, 李正东. (HgCd) Te探测器的光吸收系数对其有效Franz-Keldysh偏移的影响[J]. 应用科学学报, 1997, 15(3): 279-284.

YE YUTANG, LI JlAXU, HONG YONGHE, LI ZHONGDONG, YE JING, SHU HAIHONG, LI ZHENGDONG. THE PHOTON ABSORPTION COEFFICIENT OF (HgCd) Te DETECTORS AND ITS EFFECT ON THE FRANZ-KELDYSH SHIFT OF CUTOFF WAVELENGTH[J]. Journal of Applied Sciences, 1997, 15(3): 279-284.