Enhanced efficiency in dye-sensitised solar cells using a TiO2-based sandwiched film as photoanode

被引：5
|
作者：
Kang, Cuiping [1 ]
Zhang, Zhenxing [1 ]
Zhang, Yongzhe [1 ]
He, Yongmin [1 ]
Xie, Yizhu [1 ]
Xie, Erqing [1 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
来源：
MICRO & NANO LETTERS | 2011年 / 6卷 / 08期
基金：
中国国家自然科学基金;
关键词：
TIO2 NANOTUBE ARRAYS; LIGHT-SCATTERING; CONVERSION; PHOTOELECTRODE; TRANSPORT;
D O I：
10.1049/mnl.2011.0225
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A multi-layered film with a TiO2-based nanotubes/nanoparticles/nanotubes sandwich structure has been developed to increase light-harvesting efficiency by enhancing light scattering. Compared to a double-layered film of nanotubes/nanoparticles, the sandwiched film exhibited greatly improved light-absorption properties. An obviously improved total energy-conversion efficiency of 6.11% was obtained in the sandwiched film, which is 27.3, 46.1 and 213% higher than those of the double-layered film, nanoparticle film and nanotube film, respectively. A possible mechanism for the enhancement of light harvesting in the sandwiched film is proposed, whereby the observed enhancement is owing to effective scattering by the bottom layer and reflection of escaped light by the top layer.
引用
收藏
页码：579 / 581
页数：3
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