InSb focal plane array (FPAs) grown by molecular beam epitaxy (MBE)

Details InSb focal plane array (FPAs) grown by molecular beam epitaxy (MBE) InSb focal plane array (FPAs) grown by molecular beam epitaxy (MBE)

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4028..398a&link_type=abstract

Proc. SPIE Vol. 4028, p. 398-403, Infrared Detectors and Focal Plane Arrays VI, Eustace L. Dereniak; Robert E. Sampson; Eds.

Physics

1

Scientific paper

Staring InSb FPAs grown by MBE have been demonstrated. Low growth temperatures have been employed to provide p+-n- n+ photodiodes with a dark, 80 K ROA equals 9 X 105(Omega) cm2. A degenerately doped substrate has been used to provide transparency in the 3.5 micrometer - 5.5 micrometer spectral region. Free carrier absorption necessitates some thinning of the substrate and an anti- reflection coated external quantum efficiency of 62% has been achieved with a final thickness of approximately equals 40 micrometer. 320 X 256 FPA's operating at 90 K and looking at a 295 K scene in f/2 have a noise equivalent temperature (NE(Delta) T) at half well of 10.4 mK. FPA operability exceeds 99.7%.

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