Abstract
The electrophotographic properties of a photoreceptor composed of powdered ZnO dispersed in poly N-vinylcarbazole (PVK) for carrier generation layer and PVK for carrier transport layer has been investigated.
Despite of the poor charge retention ability of the ZnO-PVK layer, the conspicuous effect due to thermal carriers is well controlled by the aid of the PVK layer in the double layer structure. The photo-induced discharge is concerned with the generation of photoholes in the ZnO-PVK layer as well as its transport via PVK medium. Furthermore, the generation efficiency is found to be affected by a dielectronic relaxation process associated with strong electronic interation between PVK and ZnO.
