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Progress on GaInAsSb And InAsSbP Photodetectors for MiD-Infrared Wavelengths

Published online by Cambridge University Press:  10 February 2011

Z. A. Shellenbarger ,
M. G. Mauk ,
P. E. Sims ,
J. A. Cox ,
J. D. Lesko ,
J. R. Bower ,
J. D. South  and
L. C. Dinetta
Z. A. Shellenbarger
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
M. G. Mauk
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
P. E. Sims
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
J. A. Cox
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
J. D. Lesko
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
J. R. Bower
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
J. D. South
Affiliation:
Materials Science Department, University of Delaware, Newark, DE 19717
L. C. Dinetta
Affiliation:
AstroPower Inc., Solar Park, Newark, DE 19716-2000
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Abstract

Progress on mid-infrared photodetectors fabricated by the liquid phase epitaxial growth of GaInAsSb, InAsSbP, and AlGaAsSb on GaSb and InAs substrates is reported. GaInAsSb p/n and p-i-n detectors, InAsSbP p/n detectors and AlGaAsSb/GaInAsSb avalanche photodiode (APD) structures were fabricated. Preliminary results indicate that these devices can have higher detectivity with lower cooling requirements than commercially available detectors in the same wavelength range. Infrared p/n junction detectors made from GaInAsSb and InAsSbP showed cut-off wavelengths of 2.3.μm and 2.8. μm respectively. Room temperature background noiselimited detectivity (D*BLIP) of 4 × 1010 cmHz1/2/W for GaInAsSb detectors and 4 × 108 cmHz1/2/W for InAsSbP was measured. Room-temperature avalanche multiplication gain of 20 was measured on AlGaAsSb/GaInAsSb avalanche photodiodes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 484: Symposium F – Infrared Applications of Semiconductors II , 1997 , 135
Copyright
Copyright © Materials Research Society 1998

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