Ultralong Rutile TiO2 Nanowire Arrays for Highly Efficient Dye-Sensitized Solar Cells

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• 作者：Hailiang Li ; Qingjiang Yu ; Yuewu Huang ; Cuiling Yu ; Renzhi Li ; Jinzhong Wang ; Fengyun Guo ; Shujie Jiao ; Shiyong Gao ; Yong Zhang ; Xitian Zhang ; Peng Wang ; Liancheng Zhao
• 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：13384-13391
• 全文大小：560K
• 年卷期：0
• ISSN：1944-8252

文摘

Vertically aligned rutile TiO₂ nanowire arrays (NWAs) with lengths of ∼44 μm have been successfully synthesized on transparent, conductive fluorine-doped tin oxide (FTO) glass by a facile one-step solvothermal method. The length and wire-to-wire distance of NWAs can be controlled by adjusting the ethanol content in the reaction solution. By employing optimized rutile TiO₂ NWAs for dye-sensitized solar cells (DSCs), a remarkable power conversion efficiency (PCE) of 8.9% is achieved. Moreover, in combination with a light-scattering layer, the performance of a rutile TiO₂ NWAs based DSC can be further enhanced, reaching an impressive PCE of 9.6%, which is the highest efficiency for rutile TiO₂ NWA based DSCs so far.