Minority carrier lifetime studies of narrow bandgap antimonide superlattices

Linda Höglund; David Z. Ting; Arezou Khoshakhlagh; Alexander Soibel; Cory J. Hill; Anita Fisher; Sam Keo; Sarath D. Gunapala

doi:10.1117/12.2031864

31 January 2014 Minority carrier lifetime studies of narrow bandgap antimonide superlattices

Linda Höglund, David Z. Ting, Arezou Khoshakhlagh, Alexander Soibel, Cory J. Hill, Anita Fisher, Sam Keo, Sarath D. Gunapala

Author Affiliations +

Proceedings Volume 8993, Quantum Sensing and Nanophotonic Devices XI; 89930Y (2014) https://doi.org/10.1117/12.2031864
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

In this study optical modulation response and photoluminescence spectroscopy were used to study mid-wave Ga-free InAs/InAsSb superlattices. The minority carrier lifetimes in the different samples varied from 480 ns to 4700 ns, partly due to different background doping concentrations. It was shown that the photoluminescence intensity can be used as a fast non-destructive tool to predict the material quality. It was also demonstrated that it is crucial to use a low excitation power in the photoluminescence measurements in order to get a good correlation between the photoluminescence intensity and the minority carrier lifetime.

Citation Download Citation

Linda Höglund, David Z. Ting, Arezou Khoshakhlagh, Alexander Soibel, Cory J. Hill, Anita Fisher, Sam Keo, and Sarath D. Gunapala "Minority carrier lifetime studies of narrow bandgap antimonide superlattices", Proc. SPIE 8993, Quantum Sensing and Nanophotonic Devices XI, 89930Y (31 January 2014); https://doi.org/10.1117/12.2031864

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