Microstructure Design of Nanoporous TiO2 Photoelectrodes for Dye-Sensitized Solar Cell Modules

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• 作者：Linhua Hu ; Songyuan Dai ; Jian Weng ; Shangfeng Xiao ; Yifeng Sui ; Yang Huang ; Shuanghong Chen ; Fantai Kong ; Xu Pan ; Linyun Liang ; Kongjia Wang
• 刊名：Journal of Physical Chemistry B
• 出版年：2007
• 出版时间：January 18, 2007
• 年：2007
• 卷：111
• 期：2
• 页码：358 - 362
• 全文大小：251K
• 年卷期：v.111,no.2(January 18, 2007)
• ISSN：1520-5207

文摘

The optimization of dye-sensitized solar cells, especially the design of nanoporous TiO₂ film microstructure,is an urgent problem for high efficiency and future commercial applications. However, up to now, littleattention has been focused on the design of nanoporous TiO₂ microstructure for a high efficiency of dye-sensitized solar cell modules. The optimization and design of TiO₂ photoelectrode microstructure are discussedin this paper. TiO₂ photoelectrodes with three different layers, including layers of small pore size films,larger pore size films, and light-scattering particles on the conducting glass with the desirable thickness, weredesigned and investigated. Moreover, the photovoltaic properties showed that the different porosities, poresize distribution, and BET surface area of each layer have a dramatic influence on short-circuit current, open-circuit voltage, and fill factor of the modules. The optimization and design of TiO₂ photoelectrode microstructurecontribute a high efficiency of DSC modules. The photoelectric conversion efficiency around 6% with 15 ×20 cm² modules under illumination of simulated AM1.5 sunlight (100 mW/cm²) and 40 × 60 cm² panelswith the same performance tested outdoor have been achieved by our group.