Electrophoretically Deposited TiO2 Nanotube Light-Scattering Layers of Dye-Sensitized Solar Cells

被引：0

作者：

Nakayama, Keisuke ^{[1
]}

Kubo, Takaya ^{[1
,2
]}

Nishikitani, Yoshinori ^{[1
]}

机构：

[1] Nippon Oil Corp, Res & Dev Div, Cent Tech Res Lab, Naka Ku, Yokohama, Kanagawa 2310815, Japan

[2] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 08期

关键词：

TiO2; nanotube; alpha-TNT; anodization; perchloric acid; high aspect-ratio; electrophoretic deposition; light-scattering layer; dye-sensitized solar cell;

D O I：

10.1143/JJAP.47.6610

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report herein the enhanced light-to-electricity conversion efficiency of a dye-sensitized solar cell using a new bilayer structure of the TiO2 electrode. The bilayer structure consists of a light-absorbing TiO2 nanoparticle layer together with a light-scattering TiO2 nanotube layer formed upon. High aspect-ratio TiO2 nanotubes (alpha-TNTs) with a diameter of 20 nm were prepared via anodization of a Ti sheet in a perchloric acid solution, and the alpha-TNT layer was electrophoretically deposited onto the sintered TiO2 nanoparticle layer. The light-scattering property of the alpha-TNT layer was comparable to that of the commonly used TiO2 sub-micron nanoparticle layer. The alpha-TNT layer provided a large surface area for dye-adsorption as well as an efficient transport pathway for photo-generated carriers. These effects allowed a hilgher incident photon-to-current efficiency of the bilayer TiO2 structure with the nanotube light-scattering layer over the whole spectral range relative to that with a sub-micron nanoparticle layer.

引用

页码：6610 / 6614

页数：5

共 28 条

[1] How does back-reaction at the conducting glass substrate influence the dynamic photovoltage response of nanocrystalline dye-sensitized solar cells? [J].