Performance analysis of Ga-free T2SL infrared barrier detector

P. Christol; M. Bouschet; M. Tornay; R. Arinero; J. P. Perez; R. Ferreira; F. Carosella; A. Ramiandrasoa; V. Arounassalame; I. Ribet; N. Péré-Laperne

doi:10.1117/12.2662892

13 June 2023 Performance analysis of Ga-free T2SL infrared barrier detector

P. Christol, M. Bouschet, M. Tornay, R. Arinero, J. P. Perez, R. Ferreira, F. Carosella, A. Ramiandrasoa, V. Arounassalame, I. Ribet, N. Péré-Laperne

Author Affiliations +

Proceedings Volume 12534, Infrared Technology and Applications XLIX; 125340K (2023) https://doi.org/10.1117/12.2662892
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

Ga-free InAs/InAsSb T2SL XBn detector is now a reliable candidate for high-performance focal plane arrays in the MWIR (3-5μm) domain. However, this T2SL is a very anisotropic quantum structure having a type-IIb band offset alignment where electrons are rather delocalized all over the structure while holes are strongly confined in deep InAsSb quantum well. This configuration could penalize the absorption and the hole minority carrier transport but MWIR detector device without anti reflection coating shows quantum efficiency higher than 50%. Considering results of specific measurements and band structure calculation, possible carrier transport scenario is presented to explain such performance.

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P. Christol, M. Bouschet, M. Tornay, R. Arinero, J. P. Perez, R. Ferreira, F. Carosella, A. Ramiandrasoa, V. Arounassalame, I. Ribet, and N. Péré-Laperne "Performance analysis of Ga-free T2SL infrared barrier detector", Proc. SPIE 12534, Infrared Technology and Applications XLIX, 125340K (13 June 2023); https://doi.org/10.1117/12.2662892

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