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Proceedings Paper

Progress towards vertical transport study of proton-irradiated InAs/GaSb type-II strained-layer superlattice materials for space-based infrared detectors using magnetoresistance measurements
Author(s): Mitchell C. Malone; Christian P. Morath; Stephen Fahey; Brianna Klein; Vincent M. Cowan; Sanjay Krishna
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Paper Abstract

InAs/GaSb type-II strained-layer superlattice (T2SLS) materials are being considered for space-based infrared detector applications. However, an inadequate understanding of the role of carrier transport, specifically the vertical mobility, in the radiation tolerance of T2SLS detectors remains. Here, progress towards a vertical transport study of proton-irradiated, p-type InAs/GaSb T2SLS materials using magnetoresistance measurements is reported. Measurements in the growth direction of square mesas formed from InAs/GaSb superlattice material were performed using two distinct contact geometries in a Kelvin mode setup at variable magnetic fields, ranging from -9 T to 9 T, and temperatures, ranging from 5 K and 300 K. The results here suggested multi-carrier conduction and a field-dependent series resistance from the contact layer were present. The implications of these results and the plans for future magnetoresistance measurements on proton-irradiated T2SLS materials are discussed.

Paper Details

Date Published: 1 September 2015
PDF: 10 pages
Proc. SPIE 9616, Nanophotonics and Macrophotonics for Space Environments IX, 96160I (1 September 2015); doi: 10.1117/12.2188405
Show Author Affiliations
Mitchell C. Malone, The Univ. of New Mexico (United States)
Christian P. Morath, Air Force Research Lab. (United States)
Stephen Fahey, Air Force Research Lab. (United States)
Brianna Klein, The Univ. of New Mexico (United States)
Vincent M. Cowan, Air Force Research Lab. (United States)
Sanjay Krishna, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 9616:
Nanophotonics and Macrophotonics for Space Environments IX
Edward W. Taylor; David A. Cardimona, Editor(s)

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