Synthesis of ZnO@TiO2 core-shell long nanowire arrays and their application on dye-sensitized solar cells

被引：40
|
作者：
Feng, Yamin [1 ]
Ji, Xiaoxu [2 ]
Duan, Jinxia [1 ]
Zhu, Jianhui [1 ]
Jiang, Jian [1 ]
Ding, Hao [1 ]
Meng, Gaoxiang [1 ]
Ding, Ruimin [1 ]
Liu, Jinping [1 ]
Hu, Anzheng [3 ]
Huang, Xintang [1 ]
机构：
[1] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Dept Phys, Wuhan 430079, Peoples R China
[2] Nanyang Normal Univ, Sch Phys & Elect Engn, Nanyang 473003, Peoples R China
[3] Coll Xiangfan, Sch Phys & Elect Engn, Xiangfan 441813, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2012年 / 190卷
基金：
中国国家自然科学基金;
关键词：
ZnO@TiO2 NAs; Hydrothermal method; DSSCs; PCE; ZNO NANOWIRE; EFFICIENCY; ZINC;
D O I：
10.1016/j.jssc.2012.02.026
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Long ZnO nanowire arrays (NAs) grown on fluorine-doped tin oxide (FTO) glasses have been synthesized via a facile hydrothermal method without refreshing the reaction solution and applied as the precursor. By adjusting growth conditions, ZnO NAs with tunable lengths can be achieved. A nanocomposite made of ZnO nanowire core and TiO2 shell was further realized by a novel "fast-dip-coating" method conducted in a Ti(OC4H9)(4)-dissolved ethanol solution. The formed ZnO@TiO2 core-shell NAs on FTO substrates were applied as electrodes for dye sensitized solar cells (DSSCs). It is found that both the TiO2 coating and NAs length play important roles in the enhancement of photoelectric conversion efficiency (PCE) of DSSCs. When the length of ZnO@TiO2 NAs reaches up to 14 mu m, the electrode can exhibit a maximum PCE as high as 3.80%, which is 2.6 times higher than that of pure ZnO NAs. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：303 / 308
页数：6
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