Synthesis and photoelectric properties of an organic dye containing benzo[1,2-b：4,B-b＇]dithiophene for dye-sensitized solar cells

• Published in: Chinese chemical letters Vol. 24; no. 2; pp. 149 - 152
• Main Authors: Gao, Yu-Rong, Chu, Ling-Ling, Guo, Wei, Ma, Ting-Li
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2013; Dalian Research and Design Institute of Chemical Industry, Dalian 116023, China%State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
• Subjects: Benzodithiophene; Dyes; Power conversion efficiency; Solar cells; 光电性质; 合成; 噻吩; 有机染料; 染料敏化太阳能电池; 苯; Solar cells; Benzodithiophene; Dyes; Power conversion efficiency
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2013.01.010

A novel benzodithiophene-containing organic dye BDT was synthesized and characterized as a sensitizer for a nanocrystalline TiO2-based dye-sensitized solar cell. Under simulated AM1.5G solar light (100mW/cm2) illumination, the DSC based on BDT gives a power conversion efficiency of 1.78%. 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 300nm to 550nm. 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 (100mW/cm2) illumination, the DSC based on BDT gives a power conversion efficiency of 1.78%.