Fabrication of TiO2 Aggregates by Electrospraying and Their Application in Dye-Sensitized Solar Cells

被引：31

作者：

Xi, Junting ^{[1
,2
]}

Zhang, Qifeng ^{[1
]}

Xie, Shuhong ^{[3
,4
]}

Yodyingyong, Supan ^{[1
]}

Park, Kwangsuk ^{[1
]}

Sun, Yueming ^{[2
]}

Li, Jiangyu ^{[3
]}

Cao, Guozhong ^{[1
]}

机构：

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

[2] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China

[3] Univ Washington, Dept Mech Engn, Seattle, WA 98195 USA

[4] Xiangtan Univ, Fac Mat Optoelect & Phys, Xiangtan 411105, Hunan, Peoples R China

来源：

NANOSCIENCE AND NANOTECHNOLOGY LETTERS | 2011年 / 3卷 / 05期

关键词：

Dye-Sensitized Solar Cell; TiO2; Aggregates; Electrospray; Light Scattering; ENERGY-CONVERSION-EFFICIENCY; ZNO NANOCRYSTALLITES; LIGHT-SCATTERING; PERFORMANCE; NANOSTRUCTURES; NANOFIBERS; MORPHOLOGY; FILM;

D O I：

10.1166/nnl.2011.1223

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new process for the fabrication of microsized TiO2 aggregates by electrospraying of a colloidal dispersion of P25 TiO2 nanoparticles is investigated. This method allows for independently control of morphology, size and packing density of the TiO2 aggregates for better dye-loading and electrolyte penetration, efficient light scattering and charge transfer. The resultant aggregates comprised of primary P25 nanoparticles are polydisperse and nearly spherical in shape with 0.4-3 mu m in diameter. When used in dye-sensitized solar cells, the films comprised of TiO2 aggregates show high optical absorption as a result of light scattering, demonstrating more than 20% enhancement in the power conversion efficiency compared to the films made of original P25 nanoparticles under otherwise identical conditions.

引用

页码：690 / 696

页数：7

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