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Proceedings Paper

High-operating temperature MWIR photon detectors based on Type II InAs/GaSb superlattice
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Paper Abstract

Recent efforts have been paid to elevate the operating temperature of Type II superlattice Mid Infrared photon detectors. Using M-structure superlattice, novel device architectures have been developed, resulting in significant improvement of the device performances. In this paper, we will compare different photodetector architectures and discuss the optimization scheme which leads to almost one order of magnitude of improvement to the electrical performance. At 150K, single element detectors exhibit a quantum efficiency above 50%, and a specific detectivity of 1.05x1012 cm.Hz1/2/W. BLIP operation with a 300K background and 2π FOV can be reached with an operating temperature up to 180K. High quality focal plane arrays were demonstrated with a noise equivalent temperature difference (NEDT) of 11mK up to 120K. Human body imaging is achieved at 150K with NEDT of 150mK.

Paper Details

Date Published: 21 May 2011
PDF: 11 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80122Q (21 May 2011); doi: 10.1117/12.888060
Show Author Affiliations
Manijeh Razeghi, Northwestern Univ. (United States)
Siamak Abdollahi Pour, Northwestern Univ. (United States)
Edward Huang, Northwestern Univ. (United States)
Guanxi Chen, Northwestern Univ. (United States)
Abbas Haddadi, Northwestern Univ. (United States)
Binh-Minh Nguyen, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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