Mid-infrared interband cascade photodetectors with high quantum efficiency

Zhao-Bing Tian; Anjali Singh; Kevin Rigg; Sanjay Krishna

doi:10.1117/12.2208217

13 February 2016 Mid-infrared interband cascade photodetectors with high quantum efficiency

Zhao-Bing Tian, Anjali Singh, Kevin Rigg, Sanjay Krishna

Proceedings Volume 9755, Quantum Sensing and Nano Electronics and Photonics XIII; 975512 (2016) https://doi.org/10.1117/12.2208217
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Antimony-based Interband Cascade (IC) photodetectors are emerging as viable candidates for highperformance infrared applications, especially at high operating temperatures. In our previous IC detector designs using InAs/GaSb Type-II superlattices, the quantum efficiency was relatively low as the designs were optimized for high signal to noise ratio. Here we report our recent development of low-noise mid-IR IC photodetectors with high external quantum efficiency. By adopting IC detectors with thicker absorber designs, the quantum efficiency of these mid-IR IC detectors has been increased up to 35%. These IC devices continue to have low-dark current and high temperature operations. Some further analysis on the device characteristics is also presented.

Citation Download Citation

Zhao-Bing Tian, Anjali Singh, Kevin Rigg, and Sanjay Krishna "Mid-infrared interband cascade photodetectors with high quantum efficiency", Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII, 975512 (13 February 2016); https://doi.org/10.1117/12.2208217

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