Electrophotographic superlattice photoreceptor

Details Electrophotographic superlattice photoreceptor Electrophotographic superlattice photoreceptor

1987-07-30

1989-02-14

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 65, 430 67, G03G 5082, G03G 514

Patent

active

048046051

ABSTRACT:
An electrophotographic photoreceptor is constituted by forming a barrier layer, a photoconductive layer, and a surface layer on an aluminum substrate drum, in the order stated. The photoconductive layer of this electrophotographic photoreceptor has a superlattice layer of a hetero-junction constituted by alternately stacking thin a-Si:H layers and thin .mu.c-SiC:H layers. In this superlattice structure, the optical bandgaps of the respective layers differ from each other, a-Si:H serves as a potential barrier, and .mu.c-SiC:H serves as a potential well. When light is radiated on the photoconductive layer, a large number of photocarriers are generated. The photocarriers having one polarity pass through the barrier by way of a tunneling effect, and propagate in the photoconductive layer.

REFERENCES:
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patent: 4642413 (1987-02-01), Ovshinsky
patent: 4672015 (1987-06-01), Maruyama et al.
patent: 4683184 (1987-07-01), Osawa et al.
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patent: 4701395 (1987-10-01), Wronski
patent: 4720444 (1988-01-01), Chen
patent: 4722879 (1988-02-01), Ueno et al.
World Patent Index Abstract of DE No. 35 11 315 (in English).
Gottfried H. Dohler, Scientific American, "Solid-State Superlattices", vol. 249. No. 5, Nov. 1983, pp. 144-151.

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