采用水热法在纳米多孔TiO2光阳极表面包覆—薄层SrTiO3,制得TiO2/SrTiO3核壳结构光阳极,并用X射线衍射、扫描电镜、能谱仪、透射电镜及紫外可见吸收光谱对其进行表征.探讨了水热反应时间对TiO2/SrTiO3光阳极组装的染料敏化太阳能电池(DSSCs)的光电化学性能的影响.结果表明:钙钛矿结构的SrTiO3包覆在纳米多孔TiO2光阳极的表面,形成TiO2为核SrTiO3为壳的光阳极;SrTiO3包覆的样品吸收边有红移;与TiO2光阳极相比,水热反应制备的TiO2/SrTiO3核壳结构光阳极组装的DSSC短路电流密度明显增加,5h时光电性能最优,短路电流密度为13.98mA/cm2,开路电压为0.74V,填充因子为0.45,全光转换效率为4.68％,提高了35.65％.
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