Large Area Space Qualified Thermoelectrically (TE) Cooled HgCdTe MW Photovoltaic Detectors for the Halogen Occultation Experiment (HALOE)

P. W. Norton; P. H. Zimmermann; R. J. Briggs; N. M. Hartle

doi:10.1117/12.936536

6 November 1986 Large Area Space Qualified Thermoelectrically (TE) Cooled HgCdTe MW Photovoltaic Detectors for the Halogen Occultation Experiment (HALOE)

P. W. Norton, P. H. Zimmermann, R. J. Briggs, N. M. Hartle

Author Affiliations +

Proceedings Volume 0686, Infrared Detectors, Sensors, and Focal Plane Arrays; (1986) https://doi.org/10.1117/12.936536
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

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.

Citation Download Citation

P. W. Norton, P. H. Zimmermann, R. J. Briggs, and N. M. Hartle "Large Area Space Qualified Thermoelectrically (TE) Cooled HgCdTe MW Photovoltaic Detectors for the Halogen Occultation Experiment (HALOE)", Proc. SPIE 0686, Infrared Detectors, Sensors, and Focal Plane Arrays, (6 November 1986); https://doi.org/10.1117/12.936536

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