共 34 条
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.
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页数:5
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