Abstract
Dihydroxysilicon phthalocyanine [Si (OH) 2Pc] as a carrier generation material for photoreceptors was investigated by using X-ray diffraction and computational chemistry. The crystal structures of Si (OH) 2Pc three polymorphs (Phase I, II and III) were determined from powder X-ray diffraction data. Phase II and III show suitable photosensitivity for laser printers, while Phase I has no sensitivity. We discuss the photoconductivity of Si (OH) 2Pc from the crystal and the electronic structures.