Low-Background Application Of Schottky-Barrier IR Sensors

M J Cantella; N C Davison; C. H. Gylfphe; J. P. Mattia; B. Y Tsaur

doi:10.1117/12.952503

23 May 1989 Low-Background Application Of Schottky-Barrier IR Sensors

M J Cantella, N C Davison, C. H. Gylfphe, J. P. Mattia, B. Y Tsaur

Proceedings Volume 1071, Optical Sensors and Electronic Photography; (1989) https://doi.org/10.1117/12.952503
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Large staring PtSi Schottky-barrier focal plane array (FPA) sensors are fabricated using near-standard silicon technology and have represented a practical way to achieve outstanding thermal sensitivity with earth-background imagery. Their application potential could be extended significantly if background-limited operation can be maintained with low-level space backgrounds. This paper will discuss noise, dark current, and readout efficiency performance requirements and present low-noise test data obtained on 160x244-element, 5.5um-cutoff PtSi FPA's operated with exposures 10 times lower than those from typical earth backgrounds. In addition, test data will be presented on developmental IrSi detectors which have a 10um cutoff and have a quantum efficiency at 5um an order of magnitude higher than that of PtSi. This improvment in responsivity combined with low noise performance will permit design of high sensitivity sensors in both MWIR and LWIR bands.

Citation Download Citation

M J Cantella, N C Davison, C. H. Gylfphe, J. P. Mattia, and B. Y Tsaur "Low-Background Application Of Schottky-Barrier IR Sensors", Proc. SPIE 1071, Optical Sensors and Electronic Photography, (23 May 1989); https://doi.org/10.1117/12.952503

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