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Proceedings Paper

Large Area Space Qualified Thermoelectrically (TE) Cooled HgCdTe MW Photovoltaic Detectors for the Halogen Occultation Experiment (HALOE)
Author(s): P. W. Norton; P. H. Zimmermann; R. J. Briggs; N. M. Hartle
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Paper Abstract

Large area, HgCdTe MW photovoltaic detectors have been developed at Honeywell Electro-Optics Division for the NASA-HALOE instrument. This instrument is scheduled for operation on the Upper Atmospheric Research Satellite (UARS). The photodiodes will be TE cooled and were designed to operate in the 5.1 μm - 5.4 μm band at 185 K to measure Nitric Oxide (NO) concentrations in the atmosphere. To achieve the D* goal of 6 x 109 cm-Hz1/2/W and to meet the spatial responsivity uniformity specification of ± 5% across the 0.6 mm diameter, active area required 15 μm thick devices and a full backside common contact,. Reflections from the backside contact doubled the effective thickness of the detectors. Optical interference from reflections was eliminated with a dual layer front surface A/R coating. Bakeout reliability was optimized by having Au metallization for both n and p interconnects. Detailed performance data and a model for the optical stack are presented.

Paper Details

Date Published: 6 November 1986
PDF: 7 pages
Proc. SPIE 0686, Infrared Detectors, Sensors, and Focal Plane Arrays, (6 November 1986); doi: 10.1117/12.936536
Show Author Affiliations
P. W. Norton, Honeywell Electro-Optics Division (United States)
P. H. Zimmermann, Honeywell Electro-Optics Division (United States)
R. J. Briggs, Honeywell Electro-Optics Division (United States)
N. M. Hartle, Honeywell Electro-Optics Division (United States)

Published in SPIE Proceedings Vol. 0686:
Infrared Detectors, Sensors, and Focal Plane Arrays
Hideyoshi Nakamura, Editor(s)

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