| Synthesis and photoelectric properties of an organic dye containing benzo[1,2-b：4,5-b’]dithiophene for dye-sensitized solar cells |
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| 作者姓名： | Yu-Rong Gao Ling-Ling Chu Wei Guo Ting-Li Ma |
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| 作者单位： | Dalian Research and Design Institute of Chemical Industry;State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No. 50773008) and State Key Laboratory of Fine Chemicals of China. This research was also supported by the National High Technology Research and Development Program for Advanced Materials of China (No. 2009AA03Z220). |
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| 摘 要： | A novel benzodithiophene-containing organic dye BDT was synthesized and characterized as a sensitizer for a nanocrystalline TiO2-based dye-sensitized solar cell.The BDT dye shows two major electronic absorptions.The absorption of the BDT dye covers a broad visible range from 300 nm to 550 nm.The benzodithiophene unit was used as aπbridge with several advantages:（1） It facilitates the electron transfer from the donor to the acceptor;（2） A facile structural modification on the 4,8-positions in the benzodithiophene unit can be achieved;（3） Fusing benzene with two flanking thiophene units improves the thermal stability.Under simulated AM1.5G solar light（100 mW/cm2） illumination,the DSC based on BDT gives a power conversion efficiency of 1.78%.
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| 关 键 词： | Dyes Solar cells Benzodithiophene Power conversion efficiency |
| 收稿时间： | 2012-09-07 |
| 修稿时间： | 2012-12-11 |
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