Uncooled mercury cadmium telluride infrared devices with integra

Details Uncooled mercury cadmium telluride infrared devices with integra Uncooled mercury cadmium telluride infrared devices with integra

1997-04-03

1998-10-27

Westin, Edward P.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

2503384, H01L 27146

Patent

active

058280685

ABSTRACT:
This is an uncooled HgCdTe IR sensor, and method of fabricating an uncooled HgCdTe IR sensor. The method comprises; growing an HgCdTe film on an IR transparent substrate, and shaping the substrate into a lens configuration. The HgCdTe IR sensor can comprise an epitaxial, HgCdTe film on an IR transparent substrate, with the substrate shaped in a lens configuration, creating an intregal, controlled (e.g. wide angle) field of view sensor. Reflections at the interface between the HgCdTe and the lens are substantially reduced, and problems of attaching HgCdTe to the lens are also substantially reduced. Preferably, the HgCdTe film is grown by liquid phase epitaxy, the substrate is CdZnTe or CdTe, and/or the substrate is shaped into a hemisphere or a cylindrical section. In one embodiment, an IR transparent overlayer is grown on an HgCdTe film 10 and the substrate is shaped into a hemisphere lens 16 and the IR transparent overlayer is shaped into an hemispherical lens 18. The HgCdTe film may also have a top surface with a non-uniform compositional gradient, to provide an HgCdTe IR sensor which can detect a wide range of optical wavelengths.

REFERENCES:
patent: 4296324 (1981-10-01), Kern et al.
patent: 4370557 (1983-01-01), Axmark et al.
patent: 4629892 (1986-12-01), Carmichael et al.
patent: 4636631 (1987-01-01), Carpentier et al.
patent: 4691196 (1987-09-01), Kern et al.
patent: 4769775 (1988-09-01), Kern et al.
patent: 4785292 (1988-11-01), Kern et al.
patent: 5306915 (1994-04-01), Matthews

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