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Proceedings Paper

Photoluminescence study of carrier recombination processes in InAs/InAsSb type-II superlattices
Author(s): Zhi-Yuan Lin; Jin Fan; Shi Liu; Yong-Hang Zhang
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Paper Abstract

This paper reports a study of Shockley-Read-Hall, radiative, and Auger recombination processes in a series of molecular beam epitaxy grown InAs/InAsSb mid-wavelength infrared and long-wavelength infrared type-II superlattice samples using temperature- and excitation -density-dependent photoluminescence measurements, which are carried out from 12 to 77 K with excitation densities from 5 mW/cm2 to 20 W/cm2. A theoretical model is applied to describe the relation between integrated photoluminescence intensity and excitation density. Shockley-Read-Hall, radiative, and Auger recombination coefficients are extracted by fitting this relation. The results show that the Shockley-Read-Hall recombination lifetimes in all InAs/InAsSb type-II superlattice samples are longer than 100 ns, specifically the lifetime in a long-wavelength infrared sample reaches 358 ns at 77 K, in good agreement with the previously reported result of 412 ns measured using time-resolved photoluminescence on a similar sample.

Paper Details

Date Published: 4 June 2015
PDF: 7 pages
Proc. SPIE 9451, Infrared Technology and Applications XLI, 94510Q (4 June 2015); doi: 10.1117/12.2177526
Show Author Affiliations
Zhi-Yuan Lin, Arizona State Univ. (United States)
Jin Fan, Arizona State Univ. (United States)
Shi Liu, Arizona State Univ. (United States)
Yong-Hang Zhang, Arizona State Univ. (United States)


Published in SPIE Proceedings Vol. 9451:
Infrared Technology and Applications XLI
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton, Editor(s)

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