Computer Science – Performance
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2274....2a&link_type=abstract
Proc. SPIE Vol. 2274, p. 2-16, Infrared Detectors: State of the Art II, Randolph E. Longshore; Ed.
Computer Science
Performance
3
Scientific paper
Extensive material and device statistics of performance and reproducibility are presented to show the maturity of this technology. The demonstration vehicles to monitor yields during this demonstration were long-wavelength infrared (LWIR) HgCdTe multilayer wafers with 128 X 128 detector arrays. The heterostructure photodetectors were of the p-on-n planar configuration. Device data show that MBE LWIR diode test structures have performance that equals that of p-on-n double heterostructure photodiodes made by LPE. Due to the special attention given to understanding and reducing epilayer growth-induced defects, we have achieved improvements in FPA operability values from 92% to 98%. These improvements have resulted in the demonstration of a 128 X 128 FPA hybrid that had detectivity (D*) background limited performance when operating at 80 K in a tactical background environment. Mean D* was 1.28 X 10(superscript 11) cmHz(superscript 1/2)/W. The corresponding mean NE(Delta) T was an excellent 5.9 mK.
Arias José M.
Bajaj Jagmohan
DeWames Roger E.
Kozlowski Lester J.
Pasko John G.
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