New diketo-pyrrolo-pyrrole (DPP) sensitizer containing a furan moiety for efficient and stable dye-sensitized solar cells

被引:123
作者
Qu, Sanyin
Wang, Bing
Guo, Fuling
Li, Jing
Wu, Wenjun [1 ]
Kong, Cong
Long, Yitao
Hua, Jianli
机构
[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China
关键词
Diketo-pyrrolo-pyrrole; Metal-free; Dye-sensitized solar cell; Furan; Ionic liquid electrolyte; Stability; FREE ORGANIC-DYES; NANOCRYSTALLINE TIO2 FILMS; MOLECULAR DESIGN; CYANINE DYE; PHOTOSENSITIZER; PERFORMANCE; THIOPHENE;
D O I
10.1016/j.dyepig.2011.09.009
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A new metal-free organic sensitizer containing a furan moiety as the pi-spacer based on the diketo-pyrrolo-pyrrole unit was synthesized through simple synthetic routes and with low cost for the application of dye-sensitized solar cells. Two corresponding dyes with benzene and thiophene spacers were also synthesized for the purpose of comparison. On the basis of optimized DSSC test conditions, the sensitizer containing the furan shows prominent solar energy conversion efficiency (eta) of 5.65% (J(SC) = 15.96 mA cm(-2), V-OC = 541 mV, ff = 0.65) under simulated full sunlight irradiation. The dyes were also tested in a solvent-free ionic liquid electrolyte devices and the stability of devices was performed over 2000 h at full sunlight. The sensitizer containing the furan moiety exhibited good stability and better photovoltaic performance of up to 4.41% power conversion efficiency. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1384 / 1393
页数:10
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