Quasi-solid state dye-sensitized solar cells based on pyridine or imidazole containing copolymer chemically crosslinked gel electrolytes  

作　　者：LI MinYu FENG ShuJing FANG ShiBi XlAO XuRui LI XuePing ZHOU XiaoWen LIN Yuan 

机构地区：[1]Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Science Bulletin》2007年第17期2320-2325,共6页

基　　金：Supported by the National Research Fund for Fundamental Key Project (Grant No. 2006CB202605);the National Natural Science Foundation of China (Grant Nos. 50221201 and 50473055)

摘　　要：Quasi-solid state dye-sensitized solar cells based on chemically crosslinking with backbone polymers of poly(vinylpyridine-co-acrylonitrile) (P(VP-co-AN)) or poly(vinylimidazole-co-acrylonitrile) (P(VIM-co- AN)) and diiodide compounds of I(CH2)6I or I(CH2CH2O)nCH2CH2I solidified EC/PC/KI/I2 gel electrolytes have been fabricated. The ionic conductivities and apparent diffusion coefficients of I3? of the electro- lytes and cell performances have been investigated. Providing chemically crosslinking points, pyridine or imidazole from the backbone polymers benefited the open circuit voltage and fill factor of the cells. Consequently, the overall energy conversion efficiencies of the quasi-solid DSSCs improved over 10% even near 20% from that of the liquid electrolyte before solidification. Besides, the employing of crosslinker I(CH2CH2O)nCH2CH2I showed higher electrolytic and cell characters than that of I(CH2)6I.Quasi-solid state dye-sensitized solar cells based on chemically crosslinking with backbone polymers of poly（vinylpyridine-co-acrylonitrile） （P（VP-co-AN）） or poly（vinylimidazole-co-acrylonitrile） （P（VIM-co- AN）） and diiodide compounds of I（CH2）61 or I（CH2CH20）nCH2CH21 solidified EC/PC/KI/12 gel electrolytes have been fabricated. The ionic conductivities and apparent diffusion coefficients of l 3^- of the electrolytes and cell performances have been investigated. Providing chemically crosslinking points, pyridine or imidazole from the backbone polymers benefited the open circuit voltage and fill factor of the cells. Consequently, the overall energy conversion efficiencies of the quasi-solid DSSCs improved over 10% even near 20% from that of the liquid electrolyte before solidification. Besides, the employing of crosslinker I（CH2CH20）nCH2CH21 showed higher electrolytic and cell characters than that of I（CH2）61.

关 键 词：太阳能电池 共聚物化学交联耦合凝胶电解 嘧啶 咪唑 能量转换效率 

分 类 号：TM914.4[电气工程—电力电子与电力传动]