Novel Photoanode for Dye-Sensitized Solar Cells with Enhanced Light-Harvesting and Electron-Collection Efficiency

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• 作者：Weixing Song ; Yudong Gong ; Jianjun Tian ; Guozhong Cao ; Huabo Zhao ; Chunwen Sun
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 1, 2016
• 年：2016
• 卷：8
• 期：21
• 页码：13418-13425
• 全文大小：503K
• 年卷期：0
• ISSN：1944-8252

文摘

A novel photoanode structure modified by porous flowerlike CeO₂ microspheres as a scattering layer with a thin TiO₂ film deposited by atomic layer deposition (ALD) is prepared to achieve a significantly enhanced performance of dye-sensitized solar cells (DSSCs). The light scattering capability of the photoanode with the porous CeO₂ microsphere layer is considerably improved. The interconnection of particles and electrical contact between bilayer and conducting substrate is further enhanced by an ALD-deposited TiO₂ film, which effectively reduces the electron recombination and facilitates electron transport and thus enhances the charge collection efficiency of DSSCs. As a result, the overall efficiency of the obtained TiO₂–CeO₂-based cells reaches 9.86%, which is 31% higher than that of the DSSCs with a conventional TiO₂ photoanode.