Formation of single-crystalline rutile TiO2 splitting microspheres for dye-sensitized solar cells

被引：29

作者：

Sheng, Jiang ^{[1
]}

Hu, Linhua ^{[1
]}

Li, Wenxin ^{[1
]}

Mo, Li'e ^{[1
]}

Tian, Huajun ^{[1
]}

Dai, Songyuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Anhui, Peoples R China

来源：

SOLAR ENERGY | 2011年 / 85卷 / 11期

基金：

国家高技术研究发展计划(863计划);

关键词：

Single-crystalline rutile TiO2 splitting microspheres; Multistep splitting; Light scattering; Charge collection efficiency; Recombination; CHARGE-TRANSPORT; RECOMBINATION; PERFORMANCE; EFFICIENCY; IMPEDANCE; GROWTH; FILMS;

D O I：

10.1016/j.solener.2011.08.009

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

080707 [能源环境工程]; 082001 [油气井工程];

摘要：

The morphological evolution of specimen taken out after the different duration in TiCl3 solution was investigated by field emission scanning electron microscopy (FE-SEM). The rutile TiO2 splitting microspheres may be formed by the splitting crystal growth mechanism through the multistep process. The microsphere composed of the 20 nm width nanorods was in the range of 1.5-2.5 pm in the diameter. The dye-sensitized solar cell (DSC) based on the microspheres received 3.57% conversion efficiency under simulated AM 1.5 (100 mW/cm(2)) solar illumination, which exhibited remarkably higher charge collection efficiency and light scattering compared to that of P25. Electrochemical impedance spectroscopy (EIS) measurement revealed that impedance resistance at the surface of single-crystalline rutile TiO2 splitting microspheres was 6 times larger than that of P25 nanoparticles, indicating electron recombination was significantly retarded. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2697 / 2703

页数：7

共 24 条

[1]

Novel three-dimensional dandelion-like TiO2 structure with high photocatalytic activity [J].