Structural and Optical Characteristics of Metamorphic Bulk InAsSb

Author:

Lin Youxi1,Wang Ding1,Donetsky Dmitry1,Kipshidze Gela1,Shterengas Leon1,Belenky Gregory1,Sarney Wendy L.2,Svensson Stefan P.2

Affiliation:

1. Department of Electrical and Computer Engineering, Stony Brook University, Stony Brook, NY, 11794, USA

2. US Army Research Laboratory, 2800 Powder Mill Rd, Adelphi, MD 20783, USA

Abstract

Bulk unrelaxed InAsSb alloys with Sb compositions up to 65% and layer thicknesses up to 3 μm were grown by molecular beam epitaxy. The photoluminescence (PL) peak energy as low as 0.10 eV was demonstrated at T = 77 K. The electroluminescence and quantum efficiency data demonstrated with unoptimized barrier heterostructures from T = 80 to 150 K suggested large absorption and carrier lifetimes sufficient for the development of long wave infrared detectors and emitters with high quantum efficiency. The minority hole transport was found to be adequate for development of the detectors and emitters with large active layer thickness.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electronic, Optical and Magnetic Materials

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