硅酸盐学报

染料敏化太阳能电池中TiO_2光阳极的包覆效果

作者：庄东填林红李鑫李建保

分类号：TM914.4

出版年,卷(期):页码：2010,38(9):1848-1851

DOI：

摘要：

采用原位包覆和浸泡包覆在染料敏化太阳能电池的TiO2光阳极表面包覆了一薄层Al2O3,MgO或ZnO,讨论了不同包覆方法和实验条件对染料敏化太阳能电池性能的影响。研究表明,无论是原位包覆还是浸泡包覆,都可以在TiO2光阳极表面均匀的形成一层厚度约为1～2nm的氧化物包覆层,抑制了TiO2光阳极中的光生电子与氧化态染料和氧化态电解质的复合,从而导致光电压都有明显增大。特别是浸泡包覆不仅可以提高光电压,而且在较大的TiO2浆料粒径、合适的前驱体溶液浓度下,还可以增加光电流,导致光电转换效率明显增加。

Nanocrystalline TiO2 photoanode coated with a thin layer of Al2O3,MgO or ZnO were prepared for dye-sensitized solar cell(DSC) applications.In-situ coating method and immersing coating method The influences of coating method and experiment conditions on the cell performance were discussed.It is shown that the TiO2 crystalline grains are coated with a thin oxide layer of 1-2 nm,acting as the barrier for retarding the recombination of electrons in TiO2 photoanode,leading to the increase of photovoltage.Photocurrent and photo-to-electricity conversion efficiency of DSC with TiO2 photoanode coated by immersing method also increased in a proper concentration of precursor solution and the immersing time.

基金项目：

国家自然科学基金(50672041)资助项目

作者简介：

参考文献：

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