高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (9): 1716.

• 研究论文 • 上一篇    下一篇

CdS纳米棒/酞菁氧钛复合光导体的光电导性能

孙景志, 曹健, 李寒莹, 洪剑, 汪茫   

  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:2004-12-13 出版日期:2005-09-10 发布日期:2005-09-10
  • 基金资助:

    国家重大基础研究“九七三”计划项目(批准号:2002CB613401);国家自然科学基金(批准号:90101008)资助.

Photoconductivity of CdS Nanorods/TiOPc Composite Photoconductors

SUN Jing-Zhi, CAO Jian, LI Han-Ying, HONG Jian, WANG Mang   

  1. Department of Polymer Science & Engineering, State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027, China
  • Received:2004-12-13 Online:2005-09-10 Published:2005-09-10

摘要: 采用以溶剂热方法合成的CdS纳米棒与酞菁氧钛复合制备的复合光导体,在570nm光照下其光电导性能明显提高,将质量分数为5%的CdS纳米棒与TiOPc复合使光敏性能提高32%.电子结构的数据和表面光电压谱分析结果表明,复合体系中存在从CdS纳米棒到TiOPc的光致空穴转移,TiOPc因被CdS纳米棒敏化而表现出高的光电导性能.

关键词: CdS纳米棒, 复合材料, 电荷转移, 光敏性

Abstract: The photoconductive properties of composite photoreceptors based on titanophthalocyanine(TiOPc) and CdS nanorods were sytematically investigated with photoinduced discharge technique. Upon excitation via 570 nm light, the composite photoreceptors showed evident enhancement in photosensitivity(S). A 32% increase in S was observed for a composite in a mass fraction of 5% CdS nanorods with respect to TiOPc component. The electronic structure data of CdS and TiOPc, together with the analysis of the surface photovoltage spectroscopic curves indicated that there existed a process of charge transfer from CdS to TiOPc, which is the mechanism for the sensitization of TiOPc by CdS nanorods, thereby bringing the high photoconductivity of TiOPc component into play. This study provided an example of promising method to improve the performance of opto-electronic devices by inorganic semiconductor materials in nanostructure.

Key words: CdS nanorod, Composite material, Charge transfer, Photosensitivity

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