Dye-Sensitized TiO<sub>2</sub> Nanotube Solar Cells with Markedly Enhanced Performance via Rational Surface Engineering
Jun WangDepartment of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011Zhiqun LinDepartment of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011
2009en
ABI
Abstract
Highly ordered anodic TiO2 nanotube arrays fabricated by electrochemical anodization were sensitized with ruthenium dye N-719 to yield dye-sensitized TiO2 nanotube solar cells. Rational surface treatments on photoanode TiO2 nanotubes markedly improved the device performance. With TiCl4 treatment, in conjunction with oxygen plasma exposure under optimized conditions, dye-sensitized TiO2 nanotube solar cells produced using 14-μm-thick TiO2 nanotube arrays in backside illumination mode subjected to simulated AM 1.5 G irradiation of 100 mW/cm2 exhibited a pronounced power conversion efficiency (PCE) of 7.37%.
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