Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells

被引：17
作者：
Koh, Joo Hwan [1 ]
Koh, Jong Kwan [1 ]
Park, Nam-Gyu [2 ]
Kim, Jong Hak [1 ]
机构：
[1] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea
[2] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2010年 / 94卷 / 03期
关键词：
Dye-sensitized solar cells; Polymer electrolyte; Conductivity; Titanium oxide; Morphology; POLYMER; PERFORMANCE; POLY(3,4-ETHYLENEDIOXYTHIOPHENE); TRANSPORT; COMPLEX; MATRIX;
D O I：
10.1016/j.solmat.2009.10.024
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：
Poly(ethylene glycol) containing terminal azide groups, i.e. PEG-N-3, was synthesized by reacting poly(ethylene glycol diglycidyl ether) (PEGDGE) with NaN3, as confirmed by H-1 NMR and FT-IR spectroscopy. The resultant PEG-N-3 Was complexed with Lil or ionic liquid (1-methyl-3-propylimidazolium iodide, MPII) and then crosslinked under UV irradiation to enhance the mechanical properties of the electrolytes. The ionic conductivity of electrolytes with MPII reached 1.6 x 10(-5) S/cm at 25 degrees C, which is ten-fold higher than that of electrolytes with LI (1.5 x 10(-6) S/cm), due to different chain mobility. A worm-like morphology of the TiO2 nanoporous layer was observed in the FE-SEM micrographs, which resulted from the interfacial contact between the TiO2 nanoparticles and the electrolytes. Dye-sensitized solar cells (DSSCs) employing electrolytes with MPII and Lil exhibited an energy conversion efficiency at 100 mW/cm(2) of 1.6% and 0.8%, respectively. Solar cell performances were further improved by up to 4.2% with careful optimization. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：436 / 441
页数：6
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