Room temperature performance of mid-wavelength infrared InAsSb nBn detectors

Alexander Soibel; Cory J. Hill; Sam A. Keo; Linda Hoglund; David Z. -Y. Ting; Sarath D. Gunapala

doi:10.1117/12.2075771

8 February 2015 Room temperature performance of mid-wavelength infrared InAsSb nBn detectors

Alexander Soibel, Cory J. Hill, Sam A. Keo, Linda Hoglund, David Z. -Y. Ting, Sarath D. Gunapala

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 93700M (2015) https://doi.org/10.1117/12.2075771
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

In this work we investigate the high temperature performance of mid-wavelength infrared InAsSb-AlAsSb nBn detectors with cut-off wavelengths near 4.5μm. The quantum efficiency of these devices is 35% without antireflection coatings and does not change with temperature in the 77 - 325K temperature range, indicating potential for room temperature operation. The device dark current stays diffusion limited in the 150K-325K temperature range and becomes dominated by generation-recombination processes at lower temperatures. Detector detectivities of D*(λ) = 1x10⁹ (cm Hz^0.5/W) at T = 300K and D*(λ) = 5x10⁹(cm Hz^0.5/W) at T = 250K, which is easily achievable with a one stage TE cooler.

Citation Download Citation

Alexander Soibel, Cory J. Hill, Sam A. Keo, Linda Hoglund, David Z. -Y. Ting, and Sarath D. Gunapala "Room temperature performance of mid-wavelength infrared InAsSb nBn detectors", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93700M (8 February 2015); https://doi.org/10.1117/12.2075771

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