Facile Synthesis of ZnO@TiO2 Core-Shell Nanorod Thin Films for Dye-Sensitized Solar Cells

被引：22

作者：

Ji, Xiaoxu ^{[1
]}

Liu, Wumei ^{[2
]}

Leng, Yumin ^{[1
]}

Wang, Aihua ^{[1
]}

机构：

[1] Nanyang Normal Univ, Sch Phys & Elect Engn, Nanyang 473061, Peoples R China

[2] Tianjin Heyun Educ Informat Consulting Co Ltd, Tianjin 300450, Peoples R China

来源：

JOURNAL OF NANOMATERIALS | 2015年 / 2015卷

关键词：

ZNO NANOPARTICLES; NANOTUBE ARRAYS; NANOWIRE ARRAYS; PHOTOANODE; NANOFIBERS;

D O I：

10.1155/2015/647089

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO nanorod thin films grown on fluorine-doped tin oxide (FTO) glasses have been synthesized via facile thermal evaporation. To optimize the performance of dye-sensitized solar cells (DSSCs), we fabricated ZnO@TiO2 core-shell composite by a simple dip-coating method immersed in the mixed solution of Ti(OC4H9) and ethanol. Results of solar cell testing showed that ZnO@TiO2 core-shell nanorod thin films on FTO significantly increased open circuit voltage (from 0.47 V to 0.53 V), short circuit current (from 10.78 mA/cm(2) to 13.98 mA/cm(2)), and fill factor (from 51% to 55%). The photoelectric conversion efficiency (PEC) increased from 3.3% for bare ZnO DSSCs to 4.85% for ZnO@TiO2 core-shell structured DSSCs. This is mainly ascribed to the improvement in light harvesting efficiency, electron transfer, and the effective suppression of charge recombination.

引用

页数：5

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