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Synthesis of TiO2 - CNT Nanocomposites and its Application to Dye-Sensitized Solar Cells

The improved dye-sensitized solar cells were fabricated using TiO2-carbon nanotube nanocomposite photoanodes. An improvement of 91 % for power conversion efficiency is achieved through the incorporation of carbon nanotubes into TiO2 mesoscopic film photoanodes. The further investigation indicates that enhancement of power conversion efficiency depends on the carbon nanotube content in nanocomposite photoanodes. With the carbon nanotube content increasing from 1 to 3 wt. %, the power conversion efficiency of solar cells significantly improves from 3.02 to 5.78 %. When the carbon nanotube content is up to 5 wt. %, however, its value is down to 4.24 %.