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Heterojunction Ge[sub x]Si[sub 1[minus]x]/Si infrared detectors and focal plane arrays

Journal Article · · Optical Engineering; (United States)
DOI:https://doi.org/10.1117/12.151535· OSTI ID:5353139
; ;  [1]
  1. Massachusetts Inst. of Tech., Lexington, MA (United States). Lincoln Lab.
Heterojunction Ge[sub x]Si[sub 1[minus]x]/Si internal-photoemission infrared detectors are being developed for multispectral imaging in the middle-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) spectral bands. The detectors, which are fabricated by molecular beam epitaxy of degenerately doped Ge[sub x]Si[sub 1[minus]x] heteroepitaxial layers on Si, exhibit high responsivity uniformity, low dark-current noise, tunable cutoff wavelength out to 25 [mu]m, and excellent producibility. High-quality MWIR and LWIR thermal imagery has been obtained for 320- x 244- and 400- x 400-element focal plane arrays consisting of Ge[sub x]Si[sub 1[minus]x]/Si detectors with cutoff wavelength of [approximately]10[mu]m and monolithic CCD readout circuitry.
OSTI ID:
5353139
Journal Information:
Optical Engineering; (United States), Journal Name: Optical Engineering; (United States) Vol. 33:1; ISSN 0091-3286; ISSN OPEGAR
Country of Publication:
United States
Language:
English

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