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ACS Nano. 2010 Apr 27;4(4):2196-200. doi: 10.1021/nn9015696.

Dye-sensitized photovoltaic wires using highly ordered TiO2 nanotube arrays.

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Department of Chemical and Metallurgical Engineering, MS 388, University of Nevada, Reno, Nevada 89557, USA.


Dye-sensitized photovoltaic wires (DSPVWs) are developed using anodized Ti wires that contain ordered arrays of TiO2 nanotubes. The prototype DSPVW consists of N719 dye-adsorbed TiO2 nanotube arrays around a Ti wire as a working electrode, a platinum wire as a counter electrode, and an organic electrolyte encased in a capillary glass tube. The effect of length of nanotube arrays on the photovoltaic performance of DSPVWs is studied systematically. A solar-to-electric conversion efficiency of 2.78% is achieved with 55 microm long nanotubes under 98.3 mW/cm(2) AM 1.5 simulated full light. The prototype device is capable of achieving a long distance transport of photocurrent and harvesting all light from any direction in surroundings to generate electricity.

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