Measurement of minority carrier lifetime in infrared photovoltaic detectors using parallel circuit method

被引：1
|
作者：
Cui, Haoyang [1 ]
Wang, Chaoqun [1 ]
Wang, Jialin [1 ]
Liu, Can [1 ]
Pi, Kaiyun [1 ]
Li, Xiang [1 ]
Tang, Zhong [1 ]
机构：
[1] Shanghai Univ Elect Power, Sch Elect & Informat Engn, Shanghai 200090, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2015年 / 47卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Minority carrier lifetime; RC time constant; Parallel resistance; Composition; Pixel dimension; HGCDTE; TRANSIENTS;
D O I：
10.1007/s11082-014-0073-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An experimental method for extracting the minority carrier lifetime of a pn-juntion-type HgCdTe infrared photodetector by transient photovoltage technique is reported. The photovoltaic response of the detector is induced by a picosecond pulsed infrared laser irradiation. A small resistance is paralleled with the photodiode to minimize the influence of the junction RC constant on the photovoltaic response curve. By fitting the exponential decay phase, the time constant has been obtained which is regarded as the minority carrier lifetime of the photodiode. The carrier lifetime extracted from the experiment is in the range of 0.7-110 ns at 77 K. It is found that the minority carrier lifetime shows an increasing trend with in the increased Cd composition and pixel dimension.
引用
收藏
页码：1367 / 1372
页数：6
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