高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (9): 1673.

• 研究论文 • 上一篇    下一篇

苯封四聚苯胺/TiO2/ITO薄膜电极光致界面电荷转移

曹亚安1, 孟庆巨2, 宋庆3, 舒永春1, 赵俊岩1, 姚江宏1, 白玉白3, 许京军1   

  1. 1. 南开大学物理学院,天津300071;
    2. 吉林大学电子科学与工程学院;
    3. 吉林大学化学学院,长春130023
  • 收稿日期:2004-07-15 出版日期:2005-09-10 发布日期:2005-09-10
  • 基金资助:

    国家自然科学基金(批准号:50472035);天津市自然科学基金(批准号:043612411);南开大学科研启动基金资助.

Light Induced Interfacial Charge Transfer in Phenylcapped Aniline Tetramer/TiO2/ITO Film Electrode

CAO Ya-An1, MENG Qing-Ju2, SONG Qing3, SHU Yong-Chun1, ZHAO Jun-Yan1, YAO Jiang-Hong1, BAI Yu-Bai3, XU Jing-Jun1   

  1. 1. College of Physics, Nankai University, Tianjin 300071, China;
    2. College of Electronic Science and Engineering, Jilin University, Changchun 130023, China;
    3. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2004-07-15 Online:2005-09-10 Published:2005-09-10

摘要: 采用水解胶溶法和旋转涂膜法分别制备出TiO2纳米粒子溶胶和TiO2/ITO薄膜,采用浸泡法制备出苯封四聚苯胺(聚苯胺)/TiO2/ITO薄膜电极.利用表面光电压谱、光致循环伏安和光电流作用谱测定了TiO2的禁带宽度和表面态能级、聚苯胺的HOMO-LUMO能级宽度和双极化子能级,确定了聚苯胺/TiO2/ITO薄膜电极能带结构.进一步分析了聚苯胺/TiO2/ITO薄膜电极的光电转换特性及光致界面电荷转移的机理.

关键词: 苯封四聚苯胺, TiO2, 表面敏化, 聚苯胺/TiO2/ITO薄膜电极, 光致界面电荷转移

Abstract: The band gap and energy level of surface states of TiO2 casting film and the energy level of ground state, energy level gap(HOMO-LUMO) and energy level of dual polarons of phenylcapped aniline tetramer(PAT) were investigated by means of surface photovoltage spectroscopy(SPS), cyclic voltammograms with irradiation(CAGI) and the photocurrent action spectra(PAS). Based on the experimental results the energy band structures of PAT/TiO2/ITO thin film electrode are determined and the photo-to-electric conversion of PAT/TiO2/ITO thin film electrode and the possible mechanism for interfacial electron transfer in PAT/TiO2/ITO thin film electrode are discussed.

Key words: Phenylcapped aniline tetramer, TiO2, Surface sensitization, PAT/TiO2/ITO thin film electrode, Light-induced interfacial charge transfer

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