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Proceedings Paper

Effects of indium mole fraction on LWIR light-emitting device performance
Author(s): Naresh C. Das; Fred Towner; Ri. P. Leavitt
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Paper Abstract

Electroluminescence in the range of 7-9 μm is observed from an Sb-based type II interband quantum cascade structure. The LED structure has 30 active/injection periods. We have studied both top emitting and flip-chip mount bottom emitting LED devices. For room temperature operation, an increase, saturation and decrease in light output occur at successively higher injection currents. An increase of about ten times in light output occurs when device is operated at 77 K compared to room temperature operation. This increase is attributed to reduced Auger non-radiative recombination at lower temperatures. We varied indium mole fraction between 18-30% in the device active regions. An increase in light output is observed for lower indium mole fraction. These devices can be used for high temperature simulation in an infrared scene generation experiment.

Paper Details

Date Published: 22 April 2009
PDF: 8 pages
Proc. SPIE 7301, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XIV, 73010I (22 April 2009); doi: 10.1117/12.819412
Show Author Affiliations
Naresh C. Das, Army Research Lab. (United States)
Fred Towner, Maxion Technologies, Inc. (United States)
Ri. P. Leavitt, Maxion Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 7301:
Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XIV
James A. Buford Jr.; Robert Lee Murrer Jr., Editor(s)

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