How to Use Type II InAs/GaSb Superlattice Structure to Reach Detection Wavelength of 2-3 μm

被引:30
作者
Huang, Jianliang [1 ]
Ma, Wenquan [1 ]
Wei, Yang [1 ]
Zhang, Yanhua [1 ]
Cui, Kai [1 ]
Cao, Yulian [1 ]
Guo, Xiaolu [1 ]
Shao, Jun [2 ]
机构
[1] Chinese Acad Sci, Inst Semicond, Lab Nanooptoelect, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
关键词
InAs/GaSb; intermixing; short wavelength infrared photodetector; type II superlattice;
D O I
10.1109/JQE.2012.2210390
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
The photoluminescence (PL) peak of an InAs/GaSb superlattice (SL) structure is found to be shifted from 5.8 to 4.0 mu m at 77 K, when the growth temperature is lowered from 380 to 340 degrees C. The PL peak shift is related to In intermixing, thus some SL structures cannot reach a detection wavelength < 3 mu m. Increasing the GaSb layer thickness in the SL structure is an effective way to reach a detection wavelength of 2-3 mu m. A p-i-n detector with a 50% cutoff wavelength at 2.56 mu m at 77 K is demonstrated.
引用
收藏
页码:1322 / 1326
页数:5
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