A study of photoconductive properties of vacuum-sublimated copper-phthalocyanine/zinc sulphide multilayer films

摘要

Copper-phthalocyanine (CuPc)/zinc sulphide (ZnS) multilayer films were prepared by vacuum-sublimation. X-ray diffraction, optical absorption spectra and photoconductive properties were measured for the multilayer films. The results showed that the photoconductive properties of the CuPc/ZnS multilayer films were better than that of the CuPc film. The effects of the pair number on the photoconductive properties of the multilayer films were studied. It was found that three-pair CuPc/ZnS multilayer film had the best photoconductive properties with the light sensitivity S = 100 1x s and residual potential V__R= 17 V.