An excellent single-layered photoreceptor composed of oxotitanium phthalocyanine nanoparticles and an insulating resin

Photoconductive oxotitanium phthalocyanine (TiOPc) nanoparticles with an average diameter of 3.6 nm were successfully prepared. These nanoparticles could be well dispersed in organic solvents such as 1,2-dichloroethane to form a stable organic sol of solvent-stabilized TiOPc nanoparticles. An obvious size effect of TiOPc semiconductor was revealed by the UV–vis absorption spectroscopy measurements. Single-layered photoreceptors were prepared by coating colloidal solutions containing the C2H4Cl2-stabilized TiOPc nanoparticles and a polycarbonate (PC) resin onto aluminum plates. Optimum xerographic properties of the present photoreceptors were obtained on a photoreceptor containing 20 wt% of the TiOPc nanoparticles, which exhibited a photoconductive sensitivity (E1/2E1/2) of 0.54 μJ/cm2 and could be positively charged to 596 V.

Photoconductive TiOPc nanoparticles with an average diameter of 3.6 nm were prepared and dispersed in polycarbonate films to fabricate single-layered photoreceptors with excellent xerographic properties in the positively charged model.Figure optionsDownload as PowerPoint slide