Abstract
A novel combined structure with a mixture of TiO2 nanotubes and nanoparticles was fabricated by anodization of Ti, followed by a controlled annealing post-treatment. The TiO2 nanoparticles with the average diameter of 40nm were uniformly dispersed on the surface of TiO2 nanotubes with the diameter of 110–130nm and the length of 15μm. The photoelectric behavior of the as-prepared photoanode in dye-sensitized solar cells was analyzed by the measurements of I–V and EIS. It was found that the energy conversion efficiency of the solar cell with composite photoanode was 5.75%, enhanced up to 25.8% compared to that of the photoanode of pure TiO2 nanotube structure in the same condition.
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