Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1107...22f&link_type=abstract
IN: Infrared detectors, focal plane arrays, and imaging sensors; Proceedings of the Meeting, Orlando, FL, Mar. 30, 31, 1989 (A90
Astronomy and Astrophysics
Astronomy
2
Infrared Astronomy, Metal Oxide Semiconductors, Platinum Compounds, Schottky Diodes, Photoelectric Emission, Quantum Efficiency, Shift Registers, Silicides, Thick Films, Thin Films
Scientific paper
Large-format PtSi Schottky diode IR arrays are competitive alternatives to the smaller format photovoltaic arrays for ground-based astronomy. The modest quantum efficiency of the PtSi compared to the photovoltaic devices is more than compensated for by the larger format. The particular array discussed here is the 256 X 256 hybrid Schottky array. The use of hybrid technology yields effective fill factors of nearly 100 percent, which further offset the modest quantum efficiency limitations. The very low dark current, low-noise imaging characteristics, cost, and solid-nitrogen operating temperature add to the effectiveness of this array for ground-based imaging. Laboratory test data and astronomical results achieved at Kitt Peak are presented.
Fowler AB
Gates John
Gatley Ian
Herring Jackson
Joyce Richard R.
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