Abstract
This report presents a study of design for charge transport property of positive-charging-type single-layer OPC photoreceptor (PSLP) having highly photosensitivity and high photoresponse using an electrophotographic imaging system. Tow design objectives are demonstrated as follows. (1) In the PSLP which has dispersed p-type charge generation material, we confirmed that the existence of ETM is one of dominant factors for photosensitivity. (2) In the design for high-sensitive PSLP, it has revealed it is important to select the combination of HTM and ETM in consideration of dipole moments. In other words, in ternary solid solutions of phenylendiamine (PDA) as a hole transport material (HTM) and phenylnaphthquinone (PNQ) as an electron transport material (ETM) in bisphenol-Z type polycarbonate (PC-Z) as a binder resin, a significant increase in the electron mobility have been observed. The effect is attributed to the elimination of random dipolar field s due to static dipole moments of the carbonyl groups of the polycarbonate.
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