FORMATION OF ORGANIC PHOTORECEPTORS BY IN SITU POLYMERIZATION
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Xerox Disclosure Journal
A method is diSclosed for the use of glow discharge polymeri- • zation in the fabrication of organic photoconductor films. More specifically, a method is 'proposed by which an active matrix Structure can be formed by in situ polymerization of • the member on a desired substrate without the use of solvents, • catalysts or other extraneous components. This method will produce a member which does not have internal, stresses caused by solvent evaporation but does have superior adhesion proper-. ties. The in situ polymerization can be achieved by the use of a glow diicharge to provide a source of free radicals by pas-sing a small quantity . of a monomer through a reaction zone. Contained in the reaction 'zone is a substrate. A second stream Of an uñact'ivated monomer in larger quantities is then passed into the. reaction zone. 'the two streams condense on-the' substrate and polymerization takes place on the sub. strate's surface. By controlling the ratio of the aotivated-monOmer stream to the main monomer vapot stream, the molecular weight of the reactive polymer can be adjusted. The thickness of the film can be controlled by the rate ot monomer vapor and the exposure time. The s-*bstrateca-be revolved to provide a 'uniform exposure.. A 'photogenerator, such as selenium, may be co-deposited at the same time as a separate layer or as a dispersion throughout the polymer layer. This may be a new technique for the preparation of geometrically controlled photoreceptors.