Abstract
In this work, the hollow box TiO2 (BTiO2) with highly exposed (001) surface was synthesized through solid state precursor and various mixing ratio of BTiO2 film based dye-sensitized solar cells (DSSCs) were fabricated. The photoelectric conversion efficiency of solar cell with the content of 20 wt% BTiO2 could reach 6.1%, which greatly improves the photovoltaic performance by 101% compared with pure P25 film based photoanode (3.04%). This result may attribute to the enhanced light scattering capability and the prolonged electron lifetime with the increasing mixing ratio. Furthermore, the optical composite film structure can result in the faster electron transportation, great charge collection efficiency. This work shows a new photoelectrode design for enhanced energy conversion of DSSCs.
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