Application of highly ordered TiO2 nanotube arrays in flexible dye-sensitized solar cells.

Kuang, Daibin; Brillet, Jérémie; Chen, Peter; Takata, Masakazu; Uchida, Satoshi; Miura, Hidetoshi; Sumioka, Kohichi; Zakeeruddin, Shaik M et al. · ACS Nano · 2008

basic_science · Level V

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Abstract

TiO(2) nanotube arrays prepared by electrochemical anodization of Ti foils show impressive light to electricity conversion efficiency in the dye-sensitized solar cells (DSCs). The length of the TiO(2) nanotube arrays (5-14 microm) was controlled by varying the anodization time from 2 to 20 h. The influence of nanotube lengths on the photovoltaic performance of DSCs was investigated by impedance. A flexible DSC using TiO(2) nanotube arrays on a Ti foil as a working electrode and polyethylene naphthalate (ITO/PEN) as counterelectrode in combination with solvent-free ionic liquid electrolyte achieved 3.6% photovoltaic conversion efficiency under simulated AM 1.5 sunlight.

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