High-performance extended short-wavelength infrared PBn photodetectors based on InAs/GaSb/AlSb superlattices

被引:7
作者
Jiang, Junkai [1 ]
Chang, Faran [1 ]
Zhou, Wenguang [1 ]
Li, Nong [1 ]
Chen, Weiqiang [1 ]
Jiang, Dongwei [1 ,2 ,3 ]
Hao, Hongyue [1 ,2 ,3 ]
Wang, Guowei [1 ,2 ,3 ]
Wu, Donghai [1 ,2 ,3 ]
Xu, Yingqiang [1 ,2 ,3 ]
Niu, Zhi-Chuan [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Superlatt & Microstruct, Beijing 100083, Peoples R China
[2] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 101408, Peoples R China
[3] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
photodetectors; infrared; superlattices;
D O I
10.1088/1674-1056/acaa2e
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
High performance short-wavelength infrared PBn photodetectors based on InAs/GaSb/AlSb superlattices on GaSb substrate have been demonstrated. At 300 K, the device exhibits a 50% cut-off wavelength of similar to 2.1 mu m as predicted from the band structure calculation; the device responsivity peaks at 0.85 A/W, corresponding to a quantum efficiency (QE) of 56% for 2.0 mu m-thick absorption region. The dark current density of 1.03 x 10(-3) A/cm(2) is obtained under 50 mV applied bias. The device exhibits a saturated dark current shot noise limited specific detectivity (D*) of 3.29 x 10(10)cm center dot Hz(1/2)/W (at a peak responsivity of 2.0 mu m) under -50 mV applied bias.
引用
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页数:5
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