高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (10): 1543.

• 论文 • 上一篇    下一篇

五甲川菁染料的敏化作用及其在Grätzel型太阳能电池中的应用

张莉1, 杨迈之1, 高恩勤1, 乔学斌1, 郝彦忠1, 王艳琴1, 蔡生民1, 孟凡顺2, 田禾2   

  1. 1. 北京大学化学与分子工程学院, 北京 100871;
    2. 华东理工大学精细化工学院, 上海 200237
  • 收稿日期:1999-08-26 出版日期:2000-10-24 发布日期:2000-10-24
  • 通讯作者: 杨迈之(1956年出生),女,博士,教授,从事电化学和金属腐蚀与防护研究.
  • 基金资助:

    国家自然科学基金(批准号:29773003);安徽省自然科学研究项目(批准号:99j10211)资助

Photoelectrochemical Studies on the TiO2 Nanostructured Porous Film Sensitized by Pentamethylcyanine Dye

ZHANG Li1, YANG Mai-Zhi1, GAO En-Qin1, QIAO Xue-Bin1, HAO Yan-Zhong1, WANG Yan-Qin1, CAI Sheng-Min1, MENG Fan-Shun2, TIAN He2   

  1. 1. College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China;
    2. Collegeof Fine Chemical Engineering, Universityof Eastern China Sciencesand Technologies, Shanghai 200237, China
  • Received:1999-08-26 Online:2000-10-24 Published:2000-10-24

摘要: 采用新染料五甲川菁(Penta Methyl Cyanine)敏化TiO2纳米结构电极,UV-Vis吸收光谱和光电化学结果表明,使用该染料敏化使TiO2纳米结构电极吸收波长红移至可见光区和近红外区,可显著地提高TiO2纳米结构电极在可见光区的阳极光电流强度,明显改善光电转换效率.结合吸收光谱、电化学和光电化学结果初步讨论了敏化电极的光生电流的机理.

关键词: 染料敏化, TiO2纳米结构多孔膜电极, 光电化学, 光电转换

Abstract: The photoelectrochemical behavior of the TiO2 nanostructured porous film sensitized by pentamethylcyanine dye was investigated. The ground state level and the excited state level of the dye were determined by using the cyclic voltammetry and the optical absorption spectroscopy. The results showed that the excitation state level matched the conduction band edge of TiO2 nanoparticle. Therefore, the sensitization of this dye can increase the photocurrent intensity of TiO2 nanostructured electrode obviously and results in a red shift of optical absorption from the ultra violet region to the visible and near infra red region. As a result, the light-to-electricity conversion efficiency was improved evidently.

Key words: Dye sensitization, TiO2 nanostructured porous film electrode, Photoelectrochemisty, Light-to-electricity conversion

中图分类号: 

TrendMD: