Proceedings of September Meeting 2016 (NFM16)
Publication date: 14th June 2016
Oligothiophenes are highly effective donor materials in solution-processed organic bulk heterojunction solar cells (BHJSC) reaching efficiencies up to 10%.[1,2] The structural design frequently comprises the attachment of acceptor groups such as dicyanovinylene[3] or rhodanine[4] at the termini of the oligothiophene backbone. In this contribution, we now investigate difluorinated 5,6-difluorobenzo[c][1,2,5]thiadiazole (DFBT) as acceptor, which was terminally attached to various oligothiophene-based donor units. Synthesis, characterization of the physical properties, and application in solution-processed bulk heterojunction solar cells is described.
[1] A. Mishra, P. Baeuerle, Angew. Chem. 2012, 124, 2060-2109. [2] B. Kan, M. Li, Q. Zhang, F. Liu, X. Wan, Y. Wang, W. Ni, G. Long, X. Yang, H. Feng, Y. Zuo, M. Zhang, F. Huang, Y. Cao,T. Russell, Y. Chen, J. Am. Chem. Soc. 2015, 137, 3886-3893. [3] C. Wessendorf, A. Perez-Rodriguez,J. Hanisch, A. Arndt, I. Ata, G. Schulz, A. Quintilla P. Bäuerle, U. Lemmer,P. Wochner, E. Ahlswedea, E. Barrena, J. Mater. Chem. A, 2016, 4, 2571–2580.[4] B. Kan,Q. Zhang,M. Li, X. Wan, W. Ni, G. Long, Y. Wang, X. Yang, H. Feng, Y. Chen, J. Am. Chem. Soc. 2014, 136, 15529−15532.
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