Electrophotographic Phenomena in Linear Polymers with Saturated and Conjugated Bonds

The possibilities of varying the most important characteristics of organic polymers – electronic absorption spectra and the spectra of the quantum yield of the internal photoeffect, which to a large extent determine the limiting light sensitivity of silver-free and in the first place electrophotographic processes, are examined. The ways of increasing the quantum yield (electrophotographic sensitivity) by sensitising the internal photoeffect (spectral, structural, and injection) are analysed for linear polymers with saturated and conjugate bonds and polymeric charge-transfer complexes.
The nature of the phenomena underlying the photogeneration of free charge carriers in the class of substances under consideration is discussed. It is shown that the maximum electric fields under electrophotographic conditions ensure the attainment of the maximum quantum yield and correspondingly the maximum light sensitivity compared with other applications of organic semiconductors in photographic processes. The bibliography includes 97 references.