Dye-sensitized solar cells based on ZnO nanoflowers and TiO2 nanoparticles composite photoanodes

作者：Liu, Jun; Wei, Aixiang^*; Zhao, Yu; Lin, Kangbao; Luo, Fazhi

来源：Journal of Materials Science: Materials in Electronics , 2014, 25(2): 1122-1126.

DOI：10.1007/s10854-013-1698-9

• ELECTRON-TRANSPORT
• HIGH-EFFICIENCY
• MICROSPHERES

ZnO nanoflowers were synthesized by low temperature solution-phase method. ZnO nanoflowers/TiO2 nanoparticles composite photoanodes with various mass ratios were prepared on transparent conductive fluorine-doped tin oxide substrates by doctor-blade technique. The dye-sensitized solar cells (DSSCs) were assembled. The morphology characteristics of ZnO nanoflowers and ZnO/TiO2 composite photoanodes have been analyzed by scanning electron microscopy. The effect of the ZnO nanoflowers/TiO2 nanoparticles mass ratio on the performance of DSSCs was systematically investigated by I-V characteristics and electrochemical impedance spectroscopy. Results show that the conversion efficiency of the dye-sensitized solar cell with a ZnO/TiO2 mass ratio of 25:75 was increased by about 35 % compared to that of pure TiO2-based solar cell. Addition of ZnO nanoflowers can enhance the light harvesting and improve electron transport.

• 出版日期2014-2
• 单位广东工业大学