Citation: Fan Haochen, Huang Jinhua, Jiang Kejian, Song Yanlin, Zhou Xueqin. All Solution-Processed Planar Heterojunction Organic Solar Cells Using A Highly Crystalline Squaraine Dye[J]. Chemistry, ;2020, 83(11): 1007-1013. shu

All Solution-Processed Planar Heterojunction Organic Solar Cells Using A Highly Crystalline Squaraine Dye

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School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350
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Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190

Corresponding author: Huang Jinhua, huangjinhua@iccas.ac.cn Zhou Xueqin, zhouxueqin@tju.edu.cn
Received Date: 26 June 2020
Accepted Date: 22 July 2020

Figures(9)

Highly crystalline organic semiconductors with close molecular stacking could hold high charge mobility but low solubility in common organic solvents, limiting their solution processability for organic optoelectronics. Herein, a methyl-decorated high-crystalline squaraine dye (DM-SQ) is synthesized, and a highly crystalline thin film is solution-deposited using trifluoroacetic acid (TFA) as solvent. The resultant film shows a higher hole mobility as compared with that of the vacuum-deposited film (5.28×10^-4 vs. 7.53×10^-5 cm²·V^-1·s^-1). With DM-SQ as donor and PC₆₁BM (phenyl-C₆₁-butyric acid methyl ester) as acceptor, the solution-processed planar heterojunction solar cells exhibit an average power conversion efficiency of 6.08±0.19%, higher than 3.56±0.22% for the vacuum-deposited devices.
- Squaraine dye,
- Crystallinity,
- Mobility,
- Solar cell
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沈阳化工大学材料科学与工程学院沈阳 110142