物理化学学报 >> 2008, Vol. 24 >> Issue (01): 79-84.doi: 10.3866/PKU.WHXB20080114

研究论文 上一篇    下一篇

交流阻抗法研究四羧基酞菁锌掺杂的二氧化钛半导体电极

张俊颉; 吴敏; 秦艳涛; 陈蕊; 蒋银花; 孙岳明; 杨朝晖   

  1. 东南大学化学化工学院, 南京 211189; 新安江职业技术学院, 杭州 311600
  • 收稿日期:2007-07-12 修回日期:2007-09-25 发布日期:2008-01-05
  • 通讯作者: 孙岳明 E-mail:sun@seu.edu.cn

Study on Zn(II) Tetracarboxy Phthalocyanine Doped TiO2 Electrode Using Electrochemical Impedance Spectrum

ZHANG Jun-Jie; WU Min; QIN Yan-Tao; CHEN Rui; JIANG Yin-Hua; SUN Yue-Ming; YANG Zhao-Hui   

  1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China; Xin’anjiang Vocation School, Hangzhou 311600, P. R. China
  • Received:2007-07-12 Revised:2007-09-25 Published:2008-01-05
  • Contact: SUN Yue-Ming E-mail:sun@seu.edu.cn

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摘要： 用电沉积和丝网印刷法制备了纳米二氧化钛膜电极及四羧基酞菁锌(ZnPcTc)掺杂的多孔纳米二氧化钛半导体电极. 采用交流阻抗法(EIS)对二氧化钛膜的电子传输性能以及界面性质进行了表征, 确定了各阻抗弧对应的电极过程. 采用合理的模型计算了电极的电子传输动力学参数. 结果表明, 掺杂ZnPcTc后, 膜电阻明显降低, 且电极-电解液界面电容有所增大, 有利于TiO2电极在染料敏化太阳能电池器件中的应用.

关键词: 二氧化钛电极, 掺杂, 四羧基酞菁锌, 交流阻抗

Abstract: Nanocrystalline TiO2 electrode as well as Zn(II) tetracarboxy phthalocyanine (ZnPcTc) doped mesoporous nanocrystalline TiO2 electrode were fabricated. Electrochemical impedance spectrum (EIS) measurement was used to investigate the electron transfer characters in electrodes and the interface characters. Arcs of EIS and corresponding electrode processes were discussed. Dynamic parameters of the electrodes were evaluated through proper calculation model. On the basis of experimental data, we confirmed that the doping of ZnPcTc into the pure mesoporous nanocrystalline TiO2 electrode could largely decrease the electron transfer resistance, and increase the electrode-electrolyte interface capacity which was benefit to develop the performance of dye-sensitized solar cell (DSSC).

Key words: TiO2 electrode, Doping, Zn(II) tetracarboxy phthalocyanine, EIS