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Demonstration of an InAsSb strained-layer superlattice photodiode

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.99087· OSTI ID:5275848
A photodiode consisting of a p-n junction embedded in an InAs/sub 0.09/Sb/sub 0.91//InSb strained-layer superlattice with equal 130-A-thick layers was grown using molecular beam epitaxy. This nonoptimized device exhibited photoresponse out to a wavelength of 8.7 ..mu..m at 77 K. The resistance and the minority-carrier diffusion length of the photodiode result in a detectivity (3 x 10/sup 9/ cm Hz/sup 1//sup ///sup 2//W) at 7 ..mu..m that is within one order of magnitude of the detectivity of the best HgCdTe detectors at that wavelength.
Research Organization:
Sandia National Laboratories, Albuquerque, New Mexico 87185
DOE Contract Number:
AC04-76DP00789
OSTI ID:
5275848
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:19; ISSN APPLA
Country of Publication:
United States
Language:
English