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Proceedings Paper

Evaluation of Si:As and Si:Sb blocked-impurity-band detectors for SIRTF and WIRE
Author(s): Jeffrey E. Van Cleve; Terry L. Herter; Randy Butturini; George E. Gull; James R. Houck; Bruce Pirger; Justin Schoenwald
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Paper Abstract

Cryogenic telescopes in space offer dramatic reduction in thermal IR background flux. Outstanding performance in the areas of detector dark current, read noise, and radiation hardness are required to take full advantage of the sensitivity improvements possible with such facilities, especially in very low flux (2 to 100 photons/pixel/sec) applications such as the Infrared Spectrograph on SIRTF. We present our testing methods and our results on Si:As and Si:Sb block impurity band (BIB) detectors produced by Rockwell International for our SIRTF and WIRE applications. Remarkable recent results are the reduction of the multiple-sampling read noise to 30 electrons, reduction of dark current to 10 e-/s for Si:As and 40 e-/s for Si:Sb, the use of an antireflective coating to improve the detective quantum efficiency for Si:As, extension of the useful wavelength range of Si:Sb to 40 microns, and confirmation that lab data on a 50 s time scale can be extrapolated to integration times at least 10 times longer.

Paper Details

Date Published: 29 September 1995
PDF: 12 pages
Proc. SPIE 2553, Infrared Spaceborne Remote Sensing III, (29 September 1995); doi: 10.1117/12.221380
Show Author Affiliations
Jeffrey E. Van Cleve, Cornell Univ. (United States)
Terry L. Herter, Cornell Univ. (United States)
Randy Butturini, Cornell Univ. (United States)
George E. Gull, Cornell Univ. (United States)
James R. Houck, Cornell Univ. (United States)
Bruce Pirger, Cornell Univ. (United States)
Justin Schoenwald, Cornell Univ. (United States)


Published in SPIE Proceedings Vol. 2553:
Infrared Spaceborne Remote Sensing III
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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