INFRARED, Volume. 42, Issue 3, 1(2021)

Research Progress of Type-II Superlattice Long-wave Infrared Detector

Wei-rong XING*, Ming LIU, Tao WEN, Peng ZHOU, and Yu-nong HU
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    Due to the characteristics of tunable bandgap, large electron effective mass, and low Auger recombination rate, type-II superlattices have unique advantages in long-wave and very long-wave infrared detection. The research progress in the preparation of long-wave superlattice detectors is introduced, including band structure design, surface defects control, periodic structure control and surface passivation. Finally, a 320×256 long-wave superlattice focal plane array and its test performance are reported. The results show that at an operating temperature of 77 K, the cut-off wavelength of the array is 9.6m, the average peak detection rate D* is 7×1010 cm?Hz1/2/W, the noise equivalent temperature difference (NETD) is 34 mK, and the response non-uniformity is 7%.

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    XING Wei-rong, LIU Ming, WEN Tao, ZHOU Peng, HU Yu-nong. Research Progress of Type-II Superlattice Long-wave Infrared Detector[J]. INFRARED, 2021, 42(3): 1

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    Paper Information

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    Received: Sep. 23, 2020

    Accepted: --

    Published Online: Aug. 16, 2021

    The Author Email: Wei-rong XING (xingwog@163.com)

    DOI:10.3969/j.issn.1672-8785.2021.03.001

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