Insight into performance of quantum dot infrared photodetectors

被引：51
作者：
Martyniuk, P. [1 ]
Rogalski, A. [1 ]
机构：
[1] Mil Univ Technol, Inst Appl Phys, PL-00908 Warsaw, Poland
来源：
BULLETIN OF THE POLISH ACADEMY OF SCIENCES-TECHNICAL SCIENCES | 2009年 / 57卷 / 01期
关键词：
QDIPs; dark current; current gain; responsivity; detectivity; DARK-CURRENT;
D O I：
10.2478/v10175-010-0111-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the paper, an algorithm for theoretical evaluation of dark and illumination characteristics of quantum dot infrared photodetectors (QDIPs) is presented. The developed algorithm is based on a model previously published by Ryzhii and co-workers. In our considerations it is assumed that both thermionic emission and field-assisted tunnelling mechanisms determine the dark current of quantum dot detectors. The model permits to calculate the dark current, current gain, average number of electrons in quantum dots, photocurrent, and detector responsivity as a function of the structural parameters. Moreover, it explains sonic features of QDIP characteristics. In several cases, the theoretical predictions are compared with experimental data. Good agreement between both kinds of data has been obtained.
引用
收藏
页码：103 / 116
页数：14
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