A Silicon-based Imidazolium Ionic Liquid Iodide Source for Dye-Sensitized Solar Cells  

作　　者：Wenjun Wu Xiaoyu Zhang Yue Hu Bin Jin Jianli Hua 

机构地区：[1]Key Labs for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai 200237, China

出　　处：《Chinese Journal of Chemistry》2013年第3期388-392,共5页中国化学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China （Nos. 61006048 and 21172073）, the Fundamental Research Funds for the Central Universities （Nos. WJ 1014025 and W J0913001）, and Ph. D. Programs Foundation of Ministry of Educa-tion of China （No. 20090074110004） and Scientific Committee of Shanghai （No. 10520709700）.

摘　　要：Room temperature molten salt 1-methyl-3-（trimethylsilyl）methyl-imidazolium iodide （MSII） was used for io-dide sources in dye-sensitized solar cells with an organic sensitizer 2-cyano-3-[5-[4-[3-[4-（4-（N,N-bis（4-methoxy-phenyl）amino）phenyl）phenyl]-2,5-di-n-butyl-pyrrolo[3,4-c]pyrrole-1,4-dione]phenyl] furan-2-yl] acrylic acid （DPP-I） as light harvester. With an optimized electrolyte （MSII ： I2 ： BI ： GuNCS=24 ： 2 ： 2 ： 0.4, BI and GuCNS are short for benzimidazole and guanidine thiocyanate, respectively）, photovoltaic parameters （Jsc, Voc, and ff） of device are 8.97 mA·cm^-2, 600 mV and 0.61, respectively, yielding a maximum overall photo-to-energy con-version efficiency （17） of 3.23%. And then the charge-transfer mechanism of devices was deeply analyzed with elec- trochemical impedance spectroscopy （EIS） in the dark.Room temperature molten salt 1-methyl-3-（trimethylsilyl）methyl-imidazolium iodide （MSII） was used for io-dide sources in dye-sensitized solar cells with an organic sensitizer 2-cyano-3-[5-[4-[3-[4-（4-（N,N-bis（4-methoxy-phenyl）amino）phenyl）phenyl]-2,5-di-n-butyl-pyrrolo[3,4-c]pyrrole-1,4-dione]phenyl] furan-2-yl] acrylic acid （DPP-I） as light harvester. With an optimized electrolyte （MSII ： I2 ： BI ： GuNCS=24 ： 2 ： 2 ： 0.4, BI and GuCNS are short for benzimidazole and guanidine thiocyanate, respectively）, photovoltaic parameters （Jsc, Voc, and ff） of device are 8.97 mA·cm^-2, 600 mV and 0.61, respectively, yielding a maximum overall photo-to-energy con-version efficiency （17） of 3.23%. And then the charge-transfer mechanism of devices was deeply analyzed with elec- trochemical impedance spectroscopy （EIS） in the dark.

关 键 词：dye-sensitized solar cells iodide sources silicon-based ionic liquid 

分 类 号：O626.23[理学—有机化学] TM914.4[理学—化学]