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Small molecule donors based on benzodithiophene and diketopyrrolopyrrole compatible with both fullerene and non-fullerene acceptors

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Abstract

Herein, two small molecule donors, BDTTT-DPP and BDTTVT-DPP, compatible with both fullerene and non-fullerene acceptors were developed. Both molecules exhibited medium bandgaps with complementary absorption to and appropriate energy level offsets with typical acceptors like PC61BM and IDIC. The optimized devices showed the best power conversion efficiency (PCE) of 5.53% for fullerene organic solar cells and 5.48% for non-fullerene organic solar cells. Moreover, ternary devices containing blends of the small molecule donors, IDIC and PC61BM produced PCEs of 6.53% for BDTTT-DPP cells and 6.55% for BDTTVT-DPP cells, even higher than the binary ones.

Graphical abstract: Small molecule donors based on benzodithiophene and diketopyrrolopyrrole compatible with both fullerene and non-fullerene acceptors

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Publication details

The article was received on 14 Feb 2018, accepted on 13 Mar 2018 and first published on 15 Mar 2018


Article type: Communication
DOI: 10.1039/C8TC00799C
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Small molecule donors based on benzodithiophene and diketopyrrolopyrrole compatible with both fullerene and non-fullerene acceptors

    Y. Huo, J. Zhu, X. Wang, C. Yan, Y. Chai, Z. Chen, X. Zhan and H. Zhang, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC00799C

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