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A method to extend wavelength into middle-wavelength infrared based on InAsSb/(Al)GaSb interband transition quantum well infrared photodetector |
Xuan-Zhang Li(李炫璋)1,2, Ling Sun(孙令)1,2, Jin-Lei Lu(鲁金蕾)1,2, Jie Liu(刘洁)1,2, Chen Yue(岳琛)1,2, Li-Li Xie(谢莉莉)3, Wen-Xin Wang(王文新)1, Hong Chen(陈弘)1,4, Hai-Qiang Jia(贾海强)1,4, Lu Wang(王禄)1 |
1 Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China; 3 Detector Technology Laboratory, Beijing Institute of Space Mechanics&Electricity, Beijing 100076, China; 4 Songshan Lake Materials Laboratory, Dongguan 523808, China |
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Abstract We present a method to extend the operating wavelength of the interband transition quantum well photodetector from an extended short-wavelength infrared region to a middle-wavelength infrared region. In the modified InAsSb quantum well, GaSb is replaced with AlSb/AlGaSb, the valence band of the barrier material is lowered, the first restricted energy level is higher than the valence band of the barrier material, the energy band structure forms type-II structure. The photocurrent spectrum manifest that the fabricated photodetector exhibits a response range from 1.9 μm to 3.2 μm with two peaks at 2.18 μm and 3.03 μm at 78 K.
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Received: 25 November 2019
Revised: 27 December 2019
Accepted manuscript online:
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PACS:
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81.05.Ea
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(III-V semiconductors)
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85.30.De
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(Semiconductor-device characterization, design, and modeling)
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85.35.Be
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(Quantum well devices (quantum dots, quantum wires, etc.))
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11574362, 61210014, 11374340, and 11474205), the Innovative Clean-Energy Research and Application Program of Beijing Municipal Science and Technology Commission of China (Grant No. Z151100003515001), and the National Key Technology R&D Program of China (Grant No. 2016YFB0400302). |
Corresponding Authors:
Lu Wang
E-mail: lwang@iphy.ac.cn
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Cite this article:
Xuan-Zhang Li(李炫璋), Ling Sun(孙令), Jin-Lei Lu(鲁金蕾), Jie Liu(刘洁), Chen Yue(岳琛), Li-Li Xie(谢莉莉), Wen-Xin Wang(王文新), Hong Chen(陈弘), Hai-Qiang Jia(贾海强), Lu Wang(王禄) A method to extend wavelength into middle-wavelength infrared based on InAsSb/(Al)GaSb interband transition quantum well infrared photodetector 2020 Chin. Phys. B 29 038504
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