Xerographic property of azo/TiOPc composites in double-layered photoreceptor

The xerographic property has been studied in the double-layered photorecept or device where azo/TiOPc composite is used as the charge-generation materi al (CGM) and p-diethylaminobenzaldehyde-alpha-naphthalenylphenylhydrazone ( DENPH) or p-dimethylaminobenzaldehyde diphenylhydrazone (DMDPH) is used as the charge-transportation material (CTM) under the exposure of various spec tral regions. The results show that the azo/TiOPc composites exhibit high p hotosensitivity not only in the visible and near-infrared regions, but also in the entire spectral ranges, indicating the co-enhancement effect.. The W-VIS spectra suggest that the absorption spectra of the azo/TiOPc composit es are broadened. The composite mechanism is investigated through X-ray dif fraction and ESR. (C) 1999 Elsevier Science S.A. All rights reserved.