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Direct Heteroarylation Polymerization of Low Bandgap Thiophene-Based Conjugated Polymers

Published online by Cambridge University Press:  19 August 2014

Jiyeon Yoon
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
Se Hyun Jang
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
Sang Yong Kim
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
Sun Jae Kwon
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
Jing Guo
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
Yong Ku Kwon
Affiliation:
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
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Abstract

Direct heteroarylation polymerization was employed to synthesize a novel low bandgap polymer, used as a p-type material of polymer photovoltaic cells. To achieve low bandgap of conjugated polymers, electron donor-acceptor (D-A) alternating strategy was used. The electron-donating 3-alkylthiophene and electron-withdrawing cyanothiophene were coupled to be polymerized via direct heteroarylation polymerization. The cyano moiety of the polymer backbone allowed a strong intermolecular interaction between neighboring chains and improved the structural perfection of the crystal structure on the substrate. The solar cell devices of ITO/PEDOT:PSS/P3HT:PCBM/LiF/Al were fabricated on ITO-coated glass substrate.

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Copyright
Copyright © Materials Research Society 2014 

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References

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