模板法制备TiO_2纳米介孔薄膜

Preparation of mesoporous TiO_2 films employing template method

采用模板法在FTO玻璃上制备TiO2介孔薄膜,其中模板为PVC-g-POEM聚合物。通过控制PVC与POEM聚合物的质量比例来调节TiO2介孔薄膜孔径的大小及致密程度,分别得到高透过型的TiO2(对光波的透过率较高)介孔薄膜及高反射型的TiO2介孔薄膜(对光波的吸收率较低)。将高透过型、高反射型、高透过型/高反射型的TiO2介孔薄膜组装成染料敏化电池(DSSCs),结果表明:相同厚度下,基于高反射层/高吸收层的TiO2介孔薄膜的DSSCs的转化效率(4.7%)远远高于高吸收层的DSSCs(2.3%)、高反射层的DSSCs(1.5%)。

TiO2 mesoporous films were prepared via template method on FTO glass, and the polymer PVC-g-PO EM were used as templates. Throught controlling the weight ratios of PVC： POEM to adjuste the pore size and density of the films,which achived high transmission and high refractive TiO2 mesoporous films, respectively. The high refractive , high transmission and high transmission/refractive TiO2 mesoporous films were applied to dye sensitized solar cell. The properties of photoelectricity showed that the transmission/refractive TiO2 mesoporous films had the highest conversion ef ficiency.