高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (6): 1110.

• 论文 • 上一篇    下一篇

四苯基卟啉对二苯并咪唑光电导性能的敏化

杨新国, 孙景志, 汪茫, 陈红征, 黄骥   

  1. 浙江大学高分子科学与工程系, 硅材料国家重点实验室, 杭州 310027
  • 收稿日期:2002-04-23 出版日期:2003-06-24 发布日期:2003-06-24
  • 通讯作者: 汪茫(1938年出生),男,教授,博士生导师,从事有机半导体材料研究.E-mail:mwang@ipsm.zju.edu.cn E-mail:mwang@ipsm.zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:69890230和50073018)资助

The Sensitization on Photoconductivity of Bisbenzimidazole Perylene with 5,10,15,20-Tetraphenylporphyrin in Dual-layer Photoreceptor

YANG Xin-Guo, SUN Jing-Zhi, WANG Mang, CHEN Hong-Zheng, HUANG Ji   

  1. Department of Polymer Science & Engineering, State Key Laboratory for Silicon Materials, Zhejiang University, Hangzhou 310027, China
  • Received:2002-04-23 Online:2003-06-24 Published:2003-06-24

PDF (PC)

被引次数

32

摘要： 采用溶剂球磨分散法制备了四苯基卟啉(H2TPP)/二苯并咪唑(Im-PTC)复合光生材料,用浸涂法将其制成功能分离型双层光导体.采用光致释电法对其光电导性能进行测试,发现在500nm下,由质量分数5%H2TPP/40%Im-PTC复合光生材料制备的光导体的光敏性比单纯40%的Im-PTC制备的光导体提高了3.5倍,说明H2TPP对Im-PTC有明显的敏化作用.进一步研究了该复合材料的电子结构,结果表明,H2TPP与Im-PTC存在分子间的光致电荷转移,从而提高了电荷的光生和分离效率,增强了光导体的光敏性.

关键词: 光敏性, 复合光生材料, 光致电荷转移

Abstract: The xerographic properties of dual-layer photoreceptors containing 5,10,15,20-tetraphenylporphyrin(H2TPP) and bisbenzimidazole perylene(Im-PTC) composite were described. H2TPP/Im-PTC composite was dispersed by ball-milling in polymers and dual-layer photoreceptors were prepared by coating. Photoreceptors containing H2TPP/Im-PTC composites exhibited a better photosensitivity than that containing Im-PTC. When irradiatied with 500 nm monochromatic light of 12.5 μW/cm2, photosensitivity(E1/2<>-1) of 5%/40%Im-PTC composite was increased from 0.163 3μJ-1·cm2 to 0.571 4μJ-1·cm2. In addition, the initial potential of photoreceptors increased and the residual potential decreased drastically. Photovoltaic response of H2TPP/Im-PTC composite was stronger than that of Im-PTC and showed H2TPP/Im-PTC composite had higher charge photogeneration and separation ef ficiency. The photoinduced electron-transfer process between H2TPP and Im-PTC contributes to the enhancement of photosensitivity of composite photogeneration materials.

Key words: Photosensitivity, Composite photogeneration materials, Photoinduced electron-transfer

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