Sponge-like TiO2 layers for dye-sensitized solar cells

被引：36

作者：

Hocevar, Mateja ^{[1
]}

Berginc, Marko ^{[1
]}

Topic, Marko ^{[1
]}

Krasovec, Ursa Opara ^{[1
]}

机构：

[1] Univ Ljubljana, Fac Elect Engn, Ljubljana 1000, Slovenia

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2010年 / 53卷 / 03期

关键词：

Dye-sensitized solar cells; TiO2 paste and layer; Sol-gel; Pechini method; IONIC LIQUIDS; GEL METHOD; PERFORMANCE; TEMPERATURE; ELECTRODE; SINGLE; FILMS;

D O I：

10.1007/s10971-009-2144-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A titanium oxide layer used in a dye-sensitized solar cell (DSSC) has to meet two opponent properties to enable high conversion efficiency: a large surface area (for high dye loading) and good connection between TiO2 grains (for efficient extraction of electrons toward the front contact). In order to meet a trade-off between these criteria a preparation method for TiO2 paste formulation based on Pechini sol-gel method and commercial nanocrystalline TiO2 powder has been developed. A series of TiO2 pastes with different molar ratios between titanium isopropoxide, citric acid and ethylene glycol (1:X:4X) in the paste have been examined. The structure and morphology as well as cross-cut tests of deposited and sintered TiO2 layers have been analyzed. Results reveal that the paste with X = 8 exhibits the best properties, resulting in an overall conversion efficiency of DSSC under standard test conditions (100 mW/cm(2), 25 A degrees C, AM 1.5G) up to 6.6% for ionic liquid based electrolyte.

引用

页码：647 / 654

页数：8

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