中文摘要：

采用两步阳极氧化法,在金属Ti箔片表面制备出了高度有序的Ti O_2纳米管阵列膜,分析了制备出的纳米管的表面形貌与晶向结构,并阐述了其生长机理;同时,将获得的Ti O_2纳米管阵列薄膜与染料、电解液、Pt/FTO对电极组装成染料敏化太阳能电池（dye sensitized solar cells,DSSCs）,并探究其光电转化性能。实验表明,氧化时间为24 h条件下获得的纳米管组装成DSSCs的光电转换效率为4.9%。进一步的,通过采用Ti Cl_4溶液对纳米管进行表面修饰,组装DSSCs的光电性能提升至8.7%,更有利于实现DSSCs的工业化应用。

英文摘要：

The high ordered Ti O_2 nanotube arrays were prepared on Ti foils by two- step anodization. The surface morphology and crystallographic structure of the Ti O_2 nanotube arrays were analyzed and its formation mechanism was studied. Meanwhile,the photovoltaic performance of assembled dye sensitized solar cells（ DSSCs） based on the Ti O2 nanotube arrays was investigated. It was found that the power conversion efficiency of 4. 9% was obtained in DSSCs assembled with 24 h anodized Ti O_2 nanotube arrays. In order to enhance the power conversion efficiency of the DSSCs,the Ti Cl_4 treatment was used to modify the surface of the Ti O_2 nanotube,and the photovoltaic performance of DSSCs with surface modification were improved to be 8. 7%. It has benefit for the industry application of DSSCs especially.