Computer Science – Performance
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4650..111r&link_type=abstract
Proc. SPIE Vol. 4650, p. 111-116, Photodetector Materials and Devices VII, Gail J. Brown; Manijeh Razeghi; Eds.
Computer Science
Performance
1
Scientific paper
The authors report the most recent advances in type II InAs/GaSb superlattice materials and photovoltaic detectors. Lattice mismatch between the substrate and the superlattice has been routinely achieved below 0.1%, and less than 0.0043% as the record. The FWHM of the zeroth order peak from x-ray diffraction has been decreased below 50 arcsec and a record of less than 44arcsec has been achieved. High performance detectors with 50% cutoff beyond 18 micrometers up to 26 micrometers have been successfully demonstrated. The detectors with a 50% cut-off wavelength of 18.8 micrometers showed a peak current responsivity of 4 A/W at 80K, and a peak detectivity of 4.510 cm x Hz1/2/W was achieved at 80K at a reverse bias of 110mV under 300K 2(pi) FOV background. Some detectors showed a projected 0% cutoff wavelength up to 28~30 micrometers . The peak responsivity of 3Amp/Watt and detectivity of 4.2510 cm x Hz1/2/W was achieved under -40mV reverse bias at 34K for these detectors.
Brown Gail J.
Gin Aaron
Johnstone Daniel K.
Razeghi Manijeh
Wei Yajun
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