Aggregated TiO2-Based Nanotubes for Dye Sensitized Solar Cells

被引：13

作者：

Nie, Zimin ^{[1
]}

Zhou, Xiaoyuan ^{[2
]}

Zhang, Qifeng ^{[2
]}

Cao, Guozhong ^{[2
]}

Liu, Jun ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

[2] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

SCIENCE OF ADVANCED MATERIALS | 2013年 / 5卷 / 11期

基金：

美国国家科学基金会;

关键词：

TiO2; Nanotubes; Photovoltaics; Aggregates; ENERGY-CONVERSION-EFFICIENCY; MESOPOROUS TIO2 BEADS; HIGH SURFACE-AREAS; ZNO NANOSTRUCTURES; FILM; TRANSPORT; ARRAYS; PERFORMANCE; SCATTERING; ENHANCEMENT;

D O I：

10.1166/sam.2013.1622

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

One-dimensional (1D) semiconducting oxides have attracted great attention for dye sensitized solar cells (DSCs), but the overall performance is still quite limited as compared to TiO2 nanocrystalline DSCs. Here, we report the synthesis of aggregated TiO2-based nanotubes with controlled morphologies and crystalline structures to obtain an overall power conversion efficiency of 9.9% using conventional dye without any additional chemical treatment steps. The high efficiency is attributed to the unique aggregate structure for light harvesting, optimized high surface area, and good crystallinity of the nanotube aggregates obtained through proper thermal annealing. This study demonstrates that high efficiency DSCs can be obtained with 1D nanomaterials, and provides lessons on the importance of optimizing both the nanocrystalline structure and the overall microscale morphology.

引用

页码：1750 / 1755

页数：6

共 60 条

[1] Highly efficient dye-sensitized solar cells with a titania thin-film electrode composed of a network structure of single-crystal-like TiO2 nanowires made by the "oriented attachment" mechanism [J].