物理化学学报 >> 1999, Vol. 15 >> Issue (10): 905-910.doi: 10.3866/PKU.WHXB19991009

研究论文 上一篇    下一篇

纳米结构ZnO/染料/聚吡咯光阳极的光电化学性质

李卫华, 郝彦忠, 乔学斌, 张莉, 杨迈之, 蔡生民   

  1. 北京大学化学与分子工程学院,北京 100871
  • 收稿日期:1998-12-31 修回日期:1999-03-29 发布日期:1999-10-15
  • 通讯作者: 杨迈之

Photoelectrochemical Studies on the Nanostructured ZnO/Dye/PPy Electrode

Li Wei-Hua, Hao Yan-Zhong, Qiao Xue-Bin, Zhang Li, Yang Mai-Zhi, Cai Sheng-Min   

  1. College of Chemistry and Molecular Engineering,Peking University,Beijing 100871
  • Received:1998-12-31 Revised:1999-03-29 Published:1999-10-15
  • Contact: Yang Mai-Zhi

摘要:

用光电化学方法研究了染料RuL2 (NCS) 2 (L =2 ,2′-bipydine-4,4′-dicarboxylic acid) (简写为Dye)、聚吡咯 (PPy)敏化氧化锌 (ZnO)纳米晶电极以及用RuL2 (NCS) 2 和PPy复合敏化ZnO纳米晶膜电极的光电化学行为 .实验表明 ,ZnO/PPy纳米多孔膜电极为双层n-型半导体结构 .PPy和RuL2(NCS) 2 都可对ZnO纳米晶膜产生敏化作用 ,ZnO/RuL2 (NCS)2 /PPy复合多孔膜电极产生的光电流远大于ZnO/PPy纳米多孔膜电极和ZnO/Dye多孔膜电极产生的光电流 .讨论了该电极的光生电子的机理 ,初步测定了ZnO/RuL2 (NCS) 2 /PPy电极作为光阳极的光电化学电池的工作特性曲线 ,测得该电池的光电转换效率为 1 .3% ,填充因子为 0 .75 .

关键词: ZnO纳米多孔膜电极, 光敏化, 光电化学, 光电化学太阳能电池

Abstract:

The nanostructured ZnO film electrodes were prepared. PPy and RuL 2(NCS) 2 could sensitize nanostructured ZnO film electrode. An initial PEC solar cell based on nanostructured ZnO/Dye/PPy (polypyrrole) film electrode was fabricated. A fill factor of 0.754 and a high overall light to electricity conversion efficiency of 1.3%for this type of solar cell were obtained. The sensitization mechanisms of the nanostructured ZnO electrodes were also discussed.

Key words: Nanostructured ZnO film electrode, PEC solar cell, Photosensitization, Photoelectrochemistry