A detailed study of non-uniform quantum well infrared photodetectors

被引：6

作者：

Wang, SY ^{[1
]}

Chin, YC

Lee, CP

机构：

[1] Acad Sinica, Inst Astron & Astrophys, Taipei 11592, Taiwan

[2] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 30050, Taiwan

来源：

INFRARED PHYSICS & TECHNOLOGY | 2001年 / 42卷 / 3-5期

关键词：

quantum well; intersubband; infrared detector;

D O I：

10.1016/S1350-4495(01)00074-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A non-uniform quantum well infrared photodetector (NUQWIP) structure is studied. By changing the doping concentration and barrier width of each quantum well, the electric field distribution can be tailored. Different transition types of NUQWIPs were fabricated. Suppressed dark current is obtained for all the NUQWIPs. The NUQWIPs show excellent performance compared with conventional uniform structures. The dark current is about an order of magnitude lower and the background limited temperature increases for 6 degrees. The electric field distribution within the structure is calculated to explain the results and characteristics of the NUQWIPs. The NUQWIP is found to be advantageous for the low cutoff energy detectors using B-C transitions. (C) 2001 Published by Elsevier Science B.V.

引用

页码：177 / 184

页数：8

共 8 条

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