Facile Synthesis of Mesoporous Tin Oxide Spheres and Their Applications in Dye-Sensitized Solar Cells

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• 作者：Guanglu Shang ; Jihuai Wu ; Miaoliang Huang ; Jianming Lin ; Zhang Lan ; Yunfang Huang ; Leqing Fan
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：September 27, 2012
• 年：2012
• 卷：116
• 期：38
• 页码：20140-20145
• 全文大小：380K
• 年卷期：v.116,no.38(September 27, 2012)
• ISSN：1932-7455

文摘

Mesoporous tin oxide spheres (MS-SnO₂) with a main size ranging from 100 to 800 nm are synthesized via a simple solution route. These spheres consist of packed nanocrystals and possess a specific surface area of 29.4 m²路g^鈥? and a main pore size of about 4 nm. Due to large particle size, high specific surface area, and good intercrystalline connections, a dye-sensitized solar cell (DSSC) based on the MS-SnO₂ film photoanode shows an energy conversion efficiency of 4.97%, which is higher than that of a DSSC based on current SnO₂ nanoparticle film photoanodes. On the other hand, the photovoltaic performance of the DSSC can be improved by modifying the photoanode with a TiO₂ blocking layer and TiCl₄ post-treatment.