High-performance graphene/InSb heterojunction mid-infrared photogated diode

Masaaki Shimatani; Shoichiro Fukushima; Shinpei Ogawa

doi:10.1117/12.2617386

27 May 2022 High-performance graphene/InSb heterojunction mid-infrared photogated diode

Masaaki Shimatani, Shoichiro Fukushima, Shinpei Ogawa

Proceedings Volume 12107, Infrared Technology and Applications XLVIII; 121071Z (2022) https://doi.org/10.1117/12.2617386
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Herein, we developed a high-performance graphene/InSb heterojunction mid-infrared (IR) photogated diode for IR image sensors. We achieved low noise owing to a significant reduction in the dark current and high responsivity, which is attributed to the graphene/InSb heterojunction diode structure and the photogating effect. The detection performance of the proposed device is better than that of conventional graphene-based IR sensors in the mid-infrared region of 3–5 μm. These results indicate that the combination of a simple graphene/InSb heterojunction and the photogating effect can produce IR image sensors with better detection performance than existing IR sensors.

Conference Presentation

Citation Download Citation

Masaaki Shimatani, Shoichiro Fukushima, and Shinpei Ogawa "High-performance graphene/InSb heterojunction mid-infrared photogated diode", Proc. SPIE 12107, Infrared Technology and Applications XLVIII, 121071Z (27 May 2022); https://doi.org/10.1117/12.2617386

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