用于敏化太阳能电池的二氧化钛光阳极材料

敏化太阳能电池是当前清洁能源领域的研究热点之一，有望成为第三代太阳能电池。二氧化钛作为敏化太阳能电池的光阳极材料之一被广泛研究。主要综述了近20 a来二氧化钛光阳极材料的结构进展，并从电子注入效率、电子传输和基底电荷收集效率方面评述了各种结构的应用特点。另外，描述了当代三明治状二氧化钛工作电极的超薄保形覆盖层、工作层和阻挡层。然后，重点介绍了用于电子传输工作层的二氧化钛一维纳米阵列的制备方法及特点。最后，展望了光阳极结构与合成方法的未来发展趋势。

TiO2 photoanode materials for the sensitized solar cells

Sensitized solar cell is one of the hot research topics in the field of clean energy，emerging as the most promising photovoltaic device for the third-generation solar cells.As one of the photoelectrodes for sensitized solar cell，titanium dioxide has been widely studied.Therefore，the structural progress of TiO2 photoanodes in two decades was mainly summarized.The application characteristics of various structures were reviewed and discussed from the aspects of electron injection efficiency，electron-transporting，and basal charge collection efficiency.For state-of-the-art TiO2 photoelectrode，the sandwich-like archi- tecture consisted of a TiO2 ultrathin conformal overcoating layer，a TiO2 working layer，and a TiO2 blocking layer.Following was an overview of techniques and characteristics for fabricating titanium dioxide one dimensional nanoarrays in the TiO2 working layer.Finally，the trends of ideal TiO2-based photoanode structures and possible synthetic approaches were proposed.