Computer Science – Performance
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1541....2b&link_type=abstract
Proc. SPIE Vol. 1541, p. 2-10, Infrared Sensors: Detectors, Electronics, and Signal Processing, T. S. Jayadev; Ed.
Computer Science
Performance
Scientific paper
The performance of GaAs/AlGaAs multiple quantum well long-wavelength infrared detectors is evaluated for potential applications in focal plane arrays. A number of GaAs/AlGaAs quantum well infrared detectors with absorption between 7 to 12 micrometers have been fabricated and characterized. In these samples, the quantum well width and barrier height were held approximately constant, while the AlGaAs barrier thickness was varied from 300 to 500 angstrom. These detectors were characterized by FTIR absorption, dark current, responsivity, spectral noise density, and thermal activation energy measurements at temperatures ranging from 6 to 80 K. A maximum detectivity of 4 X 10(superscript 13) cm(root)Hz/W at 6 K is obtained at (lambda) equals 8.4 micrometers for the 500 angstrom barrier sample.
Bloss Walter L.
O'Loughlin Michael J.
Rosenbluth Mary
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