Rca Inc.

Charles John Busanovich

Robert Milton Moore

John A Van Raalte

John T Fischer

A low dark current vidicon is disclosed having a target comprising a thallium doped layer of hexagonal, or trigonal, polycrystalline selenium. A mechanically stable blocking contact for holes is also provided by a transparent tin oxide electrode in intimate proximity to the layer along a major surface of a faceplate in contact with the target.

Polycrystalline selenium imaging devices

A cadmium selenide base layer is vapor deposited on a substrate and thermally treated to achieve a desired photosensitivity, crystallographic structure, and granularity.

Method of forming and treating cadmium selenide photoconductive bodies

A rectifying junction suitable for use in photosensitive devices is fabricated between a polycrystalline selenium layer and an electrode of n-type or low work function metal material.

Selenium rectifier having hexagonal polycrystalline selenium layer

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.

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Princeton, NJ, United States of America

Charles John Busanovich