CdSe/PbSe high-temperature mid-infrared heterostructure photovoltaic photodetector

Lance L. McDowell; Milad Rastkar Mirzaei; Zhisheng Shi

doi:10.1117/12.2658801

13 March 2023 CdSe/PbSe high-temperature mid-infrared heterostructure photovoltaic photodetector

Lance L. McDowell, Milad Rastkar Mirzaei, Zhisheng Shi

Proceedings Volume PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI; PC124200K (2023) https://doi.org/10.1117/12.2658801
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Mid-wave infrared (MWIR) detection has been a topic of interest because of its applications in imaging, security, military, and medical diagnostics. The challenge for the MWIR imaging system has been reducing the system size, weight, power consumption, and cost (SWaP-C) while maintaining range and resolution. To help improve SWaP-C, a novel Cadmium Selenide (CdSe) on Lead Selenide (PbSe) type-II heterojunction photovoltaic detector has been demonstrated by epitaxial growth of n-type CdSe on p-type PbSe single crystal film. The I-V measurements show a p-n junction diode with a rectifying factor over 50 at room temperature. The detector structure is characterized by radiometric measurement at room temperature. 30μm × 30μm pixel achieved a D* of 6.5×10^8 Jones under zero bias photovoltaic operation. With decreasing temperature to 230K (thermoelectric cooling), we achieved a D* of 4.4×10^9 Jones.

Conference Presentation

Citation Download Citation

Lance L. McDowell, Milad Rastkar Mirzaei, and Zhisheng Shi "CdSe/PbSe high-temperature mid-infrared heterostructure photovoltaic photodetector", Proc. SPIE PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI, PC124200K (13 March 2023); https://doi.org/10.1117/12.2658801

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