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Optical Engineering

Analysis and performance of type-II superlattice infrared detectors
Author(s): Igor Vurgaftman; Chadwick L. Canedy; Eric M. Jackson; Jill A. Nolde; Chaffra A. Affouda; Edward H. Aifer; Jerry R. Meyer; Andrew D. Hood; Allan J. Evans; William E. Tennant
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Paper Abstract

We discuss the current performance of long-wavelength infrared photodetectors based on type-II superlattices, and the projected characteristics for diffusion-limited operation. For optimized architectures such as graded-gap and abrupt-heterojunction designs, the dark currents are strongly dominated by Shockley-Read (SR) rather than Auger processes. A factor of 10 improvement over the demonstrated SR lifetimes would lead to a factor of 4 lower dark current than state-of-the-art HgCdTe devices.

Paper Details

Date Published: 1 June 2011
PDF: 7 pages
Opt. Eng. 50(6) 061007 doi: 10.1117/1.3578926
Published in: Optical Engineering Volume 50, Issue 6
Show Author Affiliations
Igor Vurgaftman, U.S. Naval Research Lab. (United States)
Chadwick L. Canedy, U.S. Naval Research Lab. (United States)
Eric M. Jackson, U.S. Naval Research Lab. (United States)
Jill A. Nolde, U.S. Naval Research Lab. (United States)
Chaffra A. Affouda, U.S. Naval Research Lab. (United States)
Edward H. Aifer, U.S. Naval Research Lab. (United States)
Jerry R. Meyer, U.S. Naval Research Lab. (United States)
Andrew D. Hood, Teledyne Imaging Sensors (United States)
Allan J. Evans, Teledyne Imaging Sensors (United States)
William E. Tennant, Teledyne Imaging Sensors (United States)

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