Abstract
A dye-sensitized TiO2 thin film photoanode and carbon-based counter elctrode were fabricated on the FTO substrate with doctor-blade method. And we have coated the ZnO nanoparticles successfully on the TiO2 photoanode through a simple dipping treatment. The photoelectric performance of the assembled cells was investigated by absorption spectra and current-voltage characteristics (I-V curves). Results show that the absorbance of ZnO/TiO2 composite photoanode increases 5.4% compared to pure TiO2 photoanode. The optimal photoelectronic property can be reached when dipping time is 2h in Zn (CH3COO)2 solution. And at this point, the photoelectric conversion efficiency increases up to 50%. The enhancement mechanism has been discussed in detail.
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