纳米TiO_2多孔薄膜电极平带电势的研究  

Study on the flatband potential of nanoporous TiO_2 film electrode

作　　者：戴俊[1] 胡林华[1] 刘伟庆[1] 戴松元[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《物理学报》2008年第8期5310-5315,共6页Acta Physica Sinica

基　　金：国家重点基础研究发展规划(批准号:2006CB202600);安徽省科技攻关计划(批准号:06012024A);国家自然科学基金(批准号:20703046)资助的课题~~

摘　　要：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,经过TiCl4处理后的TiO2电极,其平带电势和对应电池的开路电压都没有明显的变化.研究表明,通过测试和分析纳米TiO2多孔薄膜电极平带电势的变化趋势,能够很好地获得相应的太阳电池的开路电压变化趋势.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.

关 键 词：平带电势 纳米TIO2 染料敏化 太阳电池 

分 类 号：TN304[电子电信—物理电子学]