Superlattice infrared photodetector research at the Jet Propulsion Laboratory

S. D. Gunapala; D. Z. Ting; S. B. Rafol; A. Soibel; A. Khoshakhlagh; C. J. Hill; L. Höglund; S. A. Keo; J. K. Liu; J. M. Mumolo; E. M. Luong; A. Fisher

doi:10.1117/12.2188724

28 August 2015 Superlattice infrared photodetector research at the Jet Propulsion Laboratory

S. D. Gunapala, D. Z. Ting, S. B. Rafol, A. Soibel, A. Khoshakhlagh, C. J. Hill, L. Höglund, S. A. Keo, J. K. Liu, J. M. Mumolo, E. M. Luong, A. Fisher

Author Affiliations +

Proceedings Volume 9555, Optical Sensing, Imaging, and Photon Counting: Nanostructured Devices and Applications; 955503 (2015) https://doi.org/10.1117/12.2188724
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

III-V semiconductors offer a highly effective platform for the development of sophisticated heterostructure-based MWIR and LWIR detectors, as exemplified by the high-performance double heterstructure (DH) nBn, XBn, and type- II superlattice infrared detectors. A key enabling design element is the unipolar barrier, which is used to implement the complementary barrier infra-red detector (CBIRD) design for increasing the collection efficiency of photogenerated carriers, and reducing dark current generation without impeding photocurrent flow. Heterostructure superlattice detectors that make effective use of unipolar barriers have demonstrated strong reduction of generationrecombination (G-R) dark current due to Shockley-Read-Hall (SRH) processes. In the last several years we solely focused on the development of antimonide based IR detectors. Recently, we demonstrated RoA values over 14,000 Ohm cm² for a 9.9 μm cutoff device by incorporating electron-blocking and hole-blocking unipolar barriers. This device has shown 300K BLIP operation with f/2 optics at 87 K with blackbody * of 1.1x10¹¹ cm Hz^1/2/W.

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S. D. Gunapala, D. Z. Ting, S. B. Rafol, A. Soibel, A. Khoshakhlagh, C. J. Hill, L. Höglund, S. A. Keo, J. K. Liu, J. M. Mumolo, E. M. Luong, and A. Fisher "Superlattice infrared photodetector research at the Jet Propulsion Laboratory", Proc. SPIE 9555, Optical Sensing, Imaging, and Photon Counting: Nanostructured Devices and Applications, 955503 (28 August 2015); https://doi.org/10.1117/12.2188724

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