Citation: Yu-Rong Gao, Ling-Ling Chu, Wei Guo, Ting-Li Ma. Synthesis and photoelectric properties of an organic dye containing benzo[1,2-b：4,5-b’]dithiophene for dye-sensitized solar cells[J]. Chinese Chemical Letters, ;2013, 24(2): 149-152. shu

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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a Dalian Research and Design Institute of Chemical Industry, Dalian 116023, China;
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b State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Corresponding author: Ting-Li Ma,
Received Date: 7 September 2012
Available Online: 11 December 2012
Fund Project: This work was supported by the National Natural Science Foundation of China (No. 50773008) (No. 50773008)

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 a π bridge 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%.
- Dyes,
- Solar cells,
- Benzodithiophene,
- Power conversion efficiency
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沈阳化工大学材料科学与工程学院沈阳 110142