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Optimization of Dye-sensitized Solar Cells Consisting of Low-temperature Fabricated Mesoporous Carbon Counter Electrode

XU Shun-Jian1,LUO Yu-Feng1,2,LI Shui-Gen1,ZHONG Wei1,HUANG Ming-Dao1(1.School of New Energy Science and Engineering,Xinyu University,Xinyu 338004,China;2.School of Mechatronics Engineering,Nanchang University,Nanchang 330031,China)  
Carbon counter electrode was fabricated using high surface area mesoporous carbon(MC) as catalytic material at low temperature.The integral structure and the photovoltaic performances of dye-sensitized solar cells(DSC) consisting of the obtained carbon counter electrode were emphatically optimized.The results show that both contact interface among MC particles and that between carbon catalytic film and substrate are improved by adding Triton X100 into MC slurry,leading to an increase of 7.1% in the efficiency of DSC.With the increasing thickness of TiO2 film,the efficiency of DSC sharply increases at first and tends to stabilization later on.The change in the efficiency is the result of competition between the adsorption amount of dye and the transmission path of electron in the TiO2 film.The resistance of electrolyte is reduced by mixing tributyl phosphate into electrolyte,resulting in an increase of 23.1% in the efficiency of DSC.The optimum efficiency of DSC employing carbon counter electrode reaches 4.82%.
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