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wide bandgap small molecular acceptor for low energy loss organic solar cells

Abstract

Non-fullerene organic solar cells (OSCs) have attracted great attention due to their advantages including tunable light absorption and low cost fabrication. Many important strategies have been used to achieve high performing OSCs including increasing the charge transport mobility and reducing the energy loss (Eloss). In this contribution, two wide bandgap small molecular acceptors (IDTzCR and IDTCR) were designed and synthesized for OSCs. Through replacing the thiophene moieties with thiazole ones, the charge transport mobility were increased due to introducing S…N noncovalent conformational locks, resulting in the significant enhancement of photovoltaic performances. Furthermore, the IDTCR based OSCs afforded a record low Eloss for “narrow bandgap donor:wide bandgap acceptor” systems due to the small LUMO/LUMO energy offset. This contribution showed a novel method to achieve excellent wide bandgap acceptors for OSCs and shed lights on understanding the relationship between the materials properties and device performances.

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Publication details

The article was received on 13 Oct 2017, accepted on 13 Nov 2017 and first published on 14 Nov 2017


Article type: Paper
DOI: 10.1039/C7TC04669C
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    wide bandgap small molecular acceptor for low energy loss organic solar cells

    P. Ye, Y. Chen, J. Wu, X. Wu, S. Yu, X. Wang, Q. Liu, X. Jia, A. Peng and H. Huang, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC04669C

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