A ZnO/TiO2 composite nanorods photoanode with improved performance for dye-sensitized solar cells

被引：17
|
作者：
Feng, Yamin [1 ]
Chen, Jinghua [2 ]
Huang, Xintang [3 ]
Liu, Weifeng [1 ]
Zhu, Yu [1 ]
Qin, Wei [1 ]
Mo, Xiaoyuan [3 ]
机构：
[1] Zhoukou Normal Univ, Coll Phys & Telecommun Engn, Zhou Kou 466000, Peoples R China
[2] Cent China Normal Univ, Sch Informat Management, Wuhan 430079, Peoples R China
[3] Cent China Normal Univ, Dept Phys, Inst Nanosci & Nanotechnol, Wuhan, Peoples R China
来源：
CRYSTAL RESEARCH AND TECHNOLOGY | 2016年 / 51卷 / 10期
基金：
中国国家自然科学基金;
关键词：
ZnO/TiO2 composite NRs film; dye-sensitized solar cells; power-conversion efficiency; ZNO NANOWIRE ARRAYS; TIO2 HOLLOW SPHERES; PHOTOVOLTAIC PERFORMANCE; CONVERSION EFFICIENCY; SCATTERING LAYER; FILM; NANOPARTICLES; GROWTH; FABRICATION; DESIGN;
D O I：
10.1002/crat.201600012
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Original Paper A dye-sensitized solar cell (DSSC) based on ZnO/TiO2 composite nanorods (NRs) photoanode is fabricated. The power conversion efficiency (PCE) of the ZnO/TiO2 composite NRs film DSSC is 4.36%, which is obviously higher than that of DSSCs based on pure TiO2 NRs (0.6%) and ZnO NRs (3.10%). The enhanced performance of ZnO/TiO2 composite NRs film DSSC can be attributed to the combined effects of ZnO and TiO2 NRs. In this architecture, the thick ZnO NRs overlayer offers a large surface area for enough dye absorption, while the thin TiO2 NRs underlayer not only offers a direct and quick pathway for photoinjected electron transfer along the photoanode but also acts as a blocking layer, which effectively hinders the direct contact between the substrate and the electrolyte resulting in lower carrier recombination.
引用
收藏
页码：548 / 553
页数：6
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