TY - GEN
T1 - Proton radiation effects on the photoluminescence of infrared InAs/InAsSb superlattices
AU - Steenbergen, Elizabeth H.
AU - Massengale, Jeremy A.
AU - Cowan, Vincent M.
AU - Lin, Zhiyuan
AU - Zhang, Yong-Hang
AU - Morath, Christian P.
PY - 2013
Y1 - 2013
N2 - Infrared detector arrays operating in space must be able to withstand defect-inducing proton radiation without performance degradation. Therefore, it is imperative that the proton-radiation hardness of infrared detector materials be investigated. Photoluminescence (PL) is sensitive to defects in materials, and thus can be used to quantify the effects of proton-radiation-induced defects. The excitation intensity-dependent PL was used to examine of a set of InAs/InAsSb superlattices before and after 63-MeV-proton irradiation. A proton dose of 100 kRad(Si) was applied to a different piece of each superlattice sample. The low-temperature excitation intensity dependent PL results reveal minimal increases in the carrier concentration, non-radiative recombination, and the PL full-width half-maximum. These results suggest that InAs/InAsSb superlattices are quite tolerant of proton irradiation and may be suitable for space infrared detector arrays.
AB - Infrared detector arrays operating in space must be able to withstand defect-inducing proton radiation without performance degradation. Therefore, it is imperative that the proton-radiation hardness of infrared detector materials be investigated. Photoluminescence (PL) is sensitive to defects in materials, and thus can be used to quantify the effects of proton-radiation-induced defects. The excitation intensity-dependent PL was used to examine of a set of InAs/InAsSb superlattices before and after 63-MeV-proton irradiation. A proton dose of 100 kRad(Si) was applied to a different piece of each superlattice sample. The low-temperature excitation intensity dependent PL results reveal minimal increases in the carrier concentration, non-radiative recombination, and the PL full-width half-maximum. These results suggest that InAs/InAsSb superlattices are quite tolerant of proton irradiation and may be suitable for space infrared detector arrays.
KW - Excitation Intensity-Dependence
KW - Infrared Superlattice
KW - Photoluminescence
KW - Proton Radiation
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U2 - 10.1117/12.2026872
DO - 10.1117/12.2026872
M3 - Conference contribution
AN - SCOPUS:84888227534
SN - 9780819497260
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Nanophotonics and Macrophotonics for Space Environments VII
T2 - 7th Nanophotonics and Macrophotonics for Space Environments Conference, NMSE 2013
Y2 - 25 August 2013 through 27 August 2013
ER -