Multilayer photoconductive assembly with intermediate heterojunc

Details Multilayer photoconductive assembly with intermediate heterojunc Multilayer photoconductive assembly with intermediate heterojunc

1981-07-06

1982-08-10

Hoffman, James R.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 60, G03G 5082

Patent

active

043438814

ABSTRACT:
A multilayer photoconductive assembly with an intermediate heterojunction. The assembly comprises a conductive substrate, a thin semiconductive layer formed of a material of one carrier polarity, which material has a narrow band gap. This layer is in substantially ohmic (low-resistive) contact with the conductive substrate. A light-absorbing layer is formed of a semiconductor which is thicker than the first layer and is of a carrier polarity opposite to the polarity of the first layer. The material has a band gap wider than the band gap of the first layer. The first and second semiconductive layers form a rectifying heterojunction therebetween. This enables the assembly to have a tremendously increased dark resistance and produces an assembly enabling high-speed electrophotography.

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