Translator Disclaimer
1 September 1992 State of the art in Schottky-barrier IR image sensors
Author Affiliations +
This paper reviews the progress in the development of infrared image sensors with Schottky- barrier detectors (SBDs). Schottky-barrier focal plane arrays (FPAs) are infrared imagers that are fabricated by a well established silicon VLSI process, therefore, at the present time they represent the most advanced technology for large-area high-density focal plane arrays for many SWIR (1 to 3 micrometers ) and MWIR (3 to 5 micrometers ) applications. SBD line sensing arrays with up to 4096 X 4 elements and 2048 X 16-TDI elements were developed and SBD staring (area) arrays with up to 1040 X 1040 elements have been reported. PtSi SBDs represent the most established SBD technology for applications in the SWIR and MWIR bands. At an operating temperature of 77 K, the dark current density of PtSi SBDs is in the range of 1.0 to 4.0 nA/cm2. Pd2Si SBDs were developed for operation with passive cooling at 120 K in the SWIR band. IrSi SBDs have also been investigated to extend the application of Schottky-barrier focal plane arrays (FPAs) into the LWIR (8 to 10 micrometers ) spectral range. Because of very low readout noise, the IR-CCD imagers with PtSi SBDs which have quantum efficiency of .5% to 1% at 4.0 micrometers are capable of 300 K thermal imaging with a noise equivalent temperature (NE(Delta) T) from 0.033 to 0.15 K for operation at 30 frames/s and f/1.0 to f/2.8 optics.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Walter F. Kosonocky "State of the art in Schottky-barrier IR image sensors", Proc. SPIE 1685, Infrared Detectors and Focal Plane Arrays II, (1 September 1992);


Review of Schottky-barrier imager technology
Proceedings of SPIE (September 01 1990)
Uncooled IR imaging: technology for the next generation
Proceedings of SPIE (July 26 1999)
Performance trade-offs of infrared spectral imagers
Proceedings of SPIE (October 31 1997)
Recent Advances In Silicide Detectors
Proceedings of SPIE (October 03 1988)
Effective method to improve the lens F# of un cooled...
Proceedings of SPIE (March 03 2008)
"Infrared Image Sensors With Schottky-Barrier Detectors"
Proceedings of SPIE (March 31 1988)

Back to Top