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Issue 20, 2019
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Novel benzodithiophene unit with an alkylthiobiphenyl side chain for constructing high-efficiency polymer solar cells

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Abstract

A novel BDT monomer with an alkylthiobiphenyl side chain named 4,8-bis(4′-((2-hexyldecyl)thio)-[1,1′-biphenyl]-4-yl)benzo[1,2-b:4,5-b′]dithiophene (BDTBPS) was designed and synthesized. The polymer named PBDTBPS–BDD was synthesized with BDTBPS and benzo[1,2-b:4,5-b′]dithiophene-4,8-dione (BDD). Solar cells were studied by blending the polymer PBDTBPS–BDD with both fullerene and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene (ITIC). The optimized polymer solar cells showed a PCE of 8.40% and 9.76% for the PC71BM-based and ITIC-based solar cells, respectively. This research indicates that the novel monomer is a promising unit for constructing high-efficiency polymer solar cells.

Graphical abstract: Novel benzodithiophene unit with an alkylthiobiphenyl side chain for constructing high-efficiency polymer solar cells

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Publication details

The article was received on 25 Feb 2019, accepted on 18 Apr 2019 and first published on 22 Apr 2019


Article type: Paper
DOI: 10.1039/C9TC01082C
J. Mater. Chem. C, 2019,7, 6105-6111

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    Novel benzodithiophene unit with an alkylthiobiphenyl side chain for constructing high-efficiency polymer solar cells

    X. Li, G. Huang, H. Jiang, S. Qiao, X. Kang, W. Chen and R. Yang, J. Mater. Chem. C, 2019, 7, 6105
    DOI: 10.1039/C9TC01082C

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