Abstract
In this paper, a novel TiO2 Nanowires/ZnO Nanosheets (TiO2 NW/ZnO NS) hierarchical structure has been fabricated on Ti foil substrate through a two-step process of hydrothermal and homogenous precipitation. DSSCs device based on such structured flexible photoanode showed a significantly improvement of power conversion efficiency compared to that based on TiO2 NWs, which increased from 0.80% to 1.41% under 100 mW cm-2 illumination, enhancing 76.2% relatively. The improvement of conversion efficiency is mainly due to the much larger surface area and resulting increased dye-loading amount and photocurrent of TiO2 NW/ZnO NS hierarchical structure.
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