Enhanced photovoltaic performance of quasi-solid-state dye-sensitized solar cells by incorporating a quaternized ammonium salt into poly(ethylene oxide)/poly(vinylidene fluoride-hexafluoropropylene) composite polymer electrolyte

被引：21
作者：
Cui, Yanzheng [1 ]
Zhang, Xueni [1 ]
Feng, Jiangwei [1 ]
Zhang, Jing [1 ]
Zhu, Yuejin [1 ]
机构：
[1] Ningbo Univ, Fac Sci, Ningbo 315211, Zhejiang, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 108卷
基金：
中国国家自然科学基金;
关键词：
Dye-sensitized solar cell; Polymer electrolyte; Ionic conductivity; Electrochemical impedance measurement; Tetraethylammonium tetrafluoroborate; TETRAETHYLAMMONIUM TETRAFLUOROBORATE; RECOMBINATION; IMPEDANCE; TEMPERATURE; CONDUCTION; IODIDES; IMPROVE; ACID;
D O I：
10.1016/j.electacta.2013.07.054
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Quasi-solid-state dye-sensitized solar cells (DSSCs) are fabricated using tetraethylammonium tetrafluoroborate (Et4NBF4)-modified poly(ethylene oxide)/poly(vinylidene fluoride-hexafluoropropylene) (PEO/P(VDF-HFP)) composite polymer electrolytes (CPEs) along with KI and I-2. Compared to the original CPE, the addition of Et4NBF4 mainly changes the conformation of the polymer structure, reduces the crystallinity of the polymer electrolyte specifically, and hence, increases the triiodide diffusion coefficient and the ionic conductivity, leading to the notable improved photovoltaic performance of DSSC. The DSSC based on the Et4NBF4 (0.15 g)-modified CPE exhibits the best performance, with a short current density of 14.70 mA cm(-2) and a photoenergy conversion efficiency of 6.243% under an irradiance of 96.17 mW cm(-2). (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：757 / 762
页数：6
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