Novel hydrophobic ionic liquids electrolyte based on cyclic sulfonium used in dye-sensitized solar cells

被引：15

作者：

Guo, Lei ^{[1
]}

Pan, Xu ^{[1
]}

Wang, Meng ^{[1
]}

Zhang, Changneng ^{[1
]}

Fang, Xiaqin ^{[1
]}

Chen, Shuanghong ^{[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 / 01期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Dye-sensitized solar cell; Ionic liquids; Electrolyte; Cyclic sulfonium; EFFICIENCY; CONVERSION; IMPEDANCE; IODIDE;

D O I：

10.1016/j.solener.2010.11.010

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：

0807 ; 0820 ;

摘要：

A novel series of hydrophobic room temperature ionic liquids based on six cyclic sulfonium cations were first time synthesized and applied in dye-sensitized solar cells as pure solvents for electrolyte system. The chronoamperograms result showed that the length of substituent on sulfonium cations could inhibit the I-3(-) diffusion and the five-ring structure of sulfonium was benefit for fast triiodide ion diffusion. The electrochemical impendence spectra measurement of dye-sensitized solar cells with these ionic liquid electrolytes was carried out and the result indicated that the cations' structure had indeed influence on the cells' performance especially for the fill factor, which was further proved by the measurement result of I-V curves of these dye-sensitized solar cells. The conclusion was obtained that the electron exchange reaction on Pt counter electrode/electrolyte interface dominated the cells' performance for these ionic liquid electrolyte-based DSCs. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：7 / 11

页数：5

共 16 条

[1] Degradation mechanisms in a dye-sensitized solar cell studied by UV-VIS and IR spectroscopy [J].