Chemistry: electrical and wave energy – Processes and products
Patent
1977-09-23
1978-07-04
Mack, John H.
Chemistry: electrical and wave energy
Processes and products
427 76, 96 15N, G03G 505, C25D 1134
Patent
active
040986551
ABSTRACT:
There is described a method for forming a photoreceptor wherein a substrate having a thin electrically insulating oxide film on a surface thereof is subjected to an electroless deposition step from a selenious acid solution whereby the oxide film is dissolved and a thin selenium layer is formed on the substrate. In one embodiment, a relatively thick photoconductive insulating layer comprising selenium or alloys thereof is deposited by vacuum evaporation over the previously electrolessly deposited selenium layer. In another embodiment, a layer of a charge carrier transport material is deposited over the selenium layer. In a preferred embodiment of the invention, an oxide-free substrate is initially subjected to an electrochemical oxidation step in an alkaline medium to form a thin electrically insulating oxide film on the surface thereof.
REFERENCES:
patent: 3174855 (1965-03-01), Gray
patent: 3725058 (1973-04-01), Hayashi et al.
patent: 3907650 (1975-09-01), Pinsler
Damjanovic Aleksandar
Ishler James M.
Teney Donald J.
Ward Anthony T.
Leader William T.
Maccarone Gaetano D.
Mack John H.
O'Sullivan James P.
Ralabate James J.
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