General strategy for improving dye-sensitized solar cells by using sub-micrometer cavities

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• 作者：Pengfei Qiang ; Peihua Yang ; Zhiwen Liang ; Yunhan Luo ; Jianhui Yu ; Yu Lan ; Xiang Cai ; Shaozao Tan ; Pengyi Liu ; Wenjie Mai
• 关键词：Dye-sensitized solar cells ; Cavities ; Sub-micrometer ; Polystyrene spheres ; Light scattering
• 刊名：Journal of Alloys and Compounds
• 出版年：15 January, 2014
• 年：2014
• 卷：583
• 期：Complete
• 页码：300-304
• 全文大小：1896 K

文摘

In this work, photoanodes with sub-micrometer cavities of different sizes and ratios were easily fabricated by burning off the polystyrene sub-micrometer spheres (PSSs) embedded in TiO₂ paste. When the original PSS in the anode was 500 nm in diameter and the ratio was 100 渭l (5 vol%) PSSs solution mixed with 0.1 g TiO₂ nanoparticles, the optimized performance of the fabricated dye-sensitized solar cells (DSSCs) was remarkably 鈭?8% higher than that of pristine TiO₂ DSSCs without sub-micrometer cavities in control group. This great performance improvement was attributed to the ability of enhancing light scattering and maintaining low resistance with the introduction of optimized amount of sub-micrometer cavities. This general strategy should help to design and develop the future DSSCs with better performance.