Photoconductive OPS-polyimides and their applications for opto-electronic devices. (I). Xerographic photoreceptors.

OPS-Polyimides (OPS-PI), which are eompoesd of a series of thiophenylene moieties, -(C6H4S)n-olig′o-p- phenylene sulfide (OPS), and imide groups, have been designed on the base of our proposed photoeonduetion echanism and showed a high sensitivity. OPS-PI consist of two different functional groups. An imide gruop in OPS-PI generates carriers by absorbing the visible light. And carriers are transported in the paths formed by OPS segments. Carrier transport mechanism will be discussed on the band-conduction model. The sensitizing in the near infrared region by H2Pc doping is proposed on the base of the energy diagram. The application of OPS-PI to xerographic photoreceptors is shown including doped OPS-PIs.