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Proceedings Paper

Visible response of λc=2.5µm HgCdTe HDVIP detectors
Author(s): Maryn G. Stapelbroek; Matthew Guptill; Arvind I. D'Souza; Elizabeth R. Bryan; J. D. Beck; M. A. Kinch; James E. Robinson
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Paper Abstract

Cu-doped HDVIP detectors with different cut-off wavelengths are routinely manufactured. The DRS HDVIP detector technology is a front-side-illuminated detector technology. There is no substrate to absorb the visible photons as in backside-illuminated detectors and these detectors should be well suited to respond to visible light. However, HDVIP detectors are passivated using CdTe that absorbs the visible light photons. CdTe strongly absorbs photons of wavelength shorter than about 800 nm. Detectors with varying thickness of CdTe passivation layers were fabricated to investigate the visible response of the 2.5-μm-cutoff detectors. A model was developed to predict the quantum efficiency of the detectors in the near infrared and visible wavelength regions as a function of CdTe thickness. Individual photodiodes (λc = 2.5 μm) in test bars were examined. Measurements of the quantum efficiency as a function of wavelength region will be presented and compared to the model predictions.

Paper Details

Date Published: 30 August 2004
PDF: 7 pages
Proc. SPIE 5406, Infrared Technology and Applications XXX, (30 August 2004); doi: 10.1117/12.547185
Show Author Affiliations
Maryn G. Stapelbroek, DRS Sensors & Targeting Systems, Inc. (United States)
Matthew Guptill, DRS Sensors & Targeting Systems, Inc. (United States)
Arvind I. D'Souza, DRS Sensors & Targeting Systems, Inc. (United States)
Elizabeth R. Bryan, DRS Sensors & Targeting Systems, Inc. (United States)
J. D. Beck, DRS Infrared Technologies, LP (United States)
M. A. Kinch, DRS Infrared Technologies, LP (United States)
James E. Robinson, DRS Infrared Technologies, LP (United States)


Published in SPIE Proceedings Vol. 5406:
Infrared Technology and Applications XXX
Bjorn F. Andresen; Gabor F. Fulop, Editor(s)

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