Photoconductor of cadmium selenide and aluminum oxide

Details Photoconductor of cadmium selenide and aluminum oxide Photoconductor of cadmium selenide and aluminum oxide

1975-03-31

1976-03-30

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313 94, H01J 2945, H01J 3138

Patent

active

039477177

ABSTRACT:
A low dark current photoconductive body includes an aluminum oxide overlayer on a cadmium selenide base layer. A transition region is provided at the interface region between the base layer and the overlayer and consists of a graded transition of cadmium and selenium with increasing amounts of aluminum and oxygen. An alternative body is disclosed omitting the overlayer. A blocking contact is provided within a portion of the body including the overlayer and/or the transition region.

REFERENCES:
patent: 3238062 (1966-03-01), Sunners et al.
patent: 3486059 (1969-12-01), Kiuchi et al.
patent: 3816787 (1974-06-01), Shimizu et al.

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