Advances and trends of type-II superlattice infrared detectors

Lili Xie; Gengyun Wang; Qiyang Sun

doi:10.1117/12.2579865

5 November 2020 Advances and trends of type-II superlattice infrared detectors

Lili Xie, Gengyun Wang, Qiyang Sun

Proceedings Volume 11563, AOPC 2020: Infrared Device and Infrared Technology; 115630K (2020) https://doi.org/10.1117/12.2579865
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Recently, type-II superlattice (T2SL) infrared detectors have drawn a lot of attention. Compared with II-VI-based HgCdTe materials, III-V-based T2SL materials (InAs/GaSb and related alloys) have higher quality, uniformity and stability. Besides, T2SL infrared (IR) detectors have flexibility in energy-band engineering. T2SL IR detectors have higher theoretically-predicted performance than HgCdTe IR detectors, and are commonly considered to be the most promising alternative for the state-of-the-art HgCdTe IR detectors. T2SL IR detectors have experienced significant progress over past few years, in areas of material epitaxy, band structure design, and device processing methods. On basis of summarizing and analyzing literature recently published, this paper presents the development history, current status and advanced technologies of T2SL IR detectors. We firstly introduce the T2SL material, working principle and its advantages. Then we review several band structures and advances of T2SL IR detectors in some famous research institutes. Finally, advanced T2SL technologies are presented, such as HOT (high-operating-temperature), dual-color and small SWaP (Size, Weight and Power) T2SL IR detectors.

Citation Download Citation

Lili Xie, Gengyun Wang, and Qiyang Sun "Advances and trends of type-II superlattice infrared detectors", Proc. SPIE 11563, AOPC 2020: Infrared Device and Infrared Technology, 115630K (5 November 2020); https://doi.org/10.1117/12.2579865

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KEYWORDS

Infrared detectors

Electrons

Staring arrays

Mercury cadmium telluride

Quantum efficiency

Absorption

Sensors

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