Electron transport in dye-sensitized solar cells based on TiO2 nanowires

被引：5
|
作者：
Jiao XingJian [1 ]
Wang Xiao [1 ]
Li Xin [1 ]
Chen HuiYuan [2 ]
Wang Gang [2 ]
Li JianBao [1 ]
Lin Hong [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Qinghai Univ, Coll Chem Engn, Xining 810016, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2014年 / 57卷 / 05期
基金：
国家高技术研究发展计划(863计划);
关键词：
TiO2; nanowires; dye-sensitized solar cells; electrochemical impedance spectroscopy; electron transport; NANOTUBE ARRAYS; RECOMBINATION; FABRICATION; GROWTH; OXIDE;
D O I：
10.1007/s11433-013-5216-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Anatase titanium dioxide nanowire arrays were prepared by hydrothermally oxidizing titanium foils in aqueous alkali and transferred onto fluorinated tin oxide (FTO) glass for use as the photoanodes of front side illuminated dye-sensitized solar cells (DSCs). Electrochemical impedance spectroscopy (EIS) measurement was applied to compare the electron transport and recombination properties of DSCs using TiO2 nanowire films and TiO2 nanoparticle films as photoanodes. It was found that the nanowire array films possess smaller electron transport resistance (R-t) and larger electron diffusion length (L-e) in the photoanodes, suggesting that the nanowire arrays can enhance the electron transport rate and have a potential to improve the charge collection efficiency of DSCs.
引用
收藏
页码：892 / 897
页数：6
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