纳米TiO2多孔薄膜电极平带电势的研究

采用光谱电化学方法研究了纳米TiO₂多孔薄膜电极的平带电势，获得了薄膜厚度以及TiCl₄处理对纳米TiO₂薄膜电极平带电势的影响情况，并研究了平带电势对染料敏化太阳电池光伏性能的影响.结果表明，可以通过检测纳米TiO₂电极平带电势的变化趋势来反映电池中TiO₂电极平带电势的变化趋势.随着TiO₂电极膜厚的增加，其平带电势将向正方向移动，导致对应电池的开路电压随之减小.另外，经 关键词： 平带电势 2')" href="#">纳米TiO₂ 染料敏化 太阳电池

Study on the flatband potential of nanoporous TiO2 film electrode

The flatband potential of nanoporous TiO₂ film electrodes has been studied by spectroelectrochemical method. The effect of film thickness and TiCl₄ treatment on the flatband potential of nanoporous TiO₂ electrodes and the photovoltaic performance of dye-sensitized solar cells were determined. The results showed that with the increasing of film thickness， the flatband potential shifts in the positive direction， and the open circuit voltage of corresponding solar cells decreases. In addition， after TiCl₄ treatment， the flatband potential and the open circuit voltage of corresponding solar cells were not obviously changed. All this suggests that the flatband potential of nanoporous TiO₂ electrode can reflect the changing trend of open circuit voltage of solar cells well.