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An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V

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Abstract

A bifluorenylidene-functionalized, H-shaped, small molecular non-fullerene electron acceptor, 6,6′,6′′,6′′′-([9,9′-bifluorenylidene]-2,2′,7,7′-tetrayltetrakis(thiophene-5,2-diyl))tetrakis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)-2,5-dihydrop yrrolo[3,4-c]pyrrole-1,4-dione) (coded as H1), which used diketopyrrolopyrrole as terminal functionalities, was designed, synthesized and characterized. H1 displayed a very high optical absorption coefficient, good solubility and thermal stability, promising optoelectronic properties, and high electron mobility, and afforded an encouraging efficiency of 5.42% when paired with the archetypal electron donor poly(3-hexylthiophene).

Graphical abstract: An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V

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Publication details

The article was received on 21 Feb 2017, accepted on 04 Apr 2017 and first published on 06 Apr 2017


Article type: Research Article
DOI: 10.1039/C7QM00084G
Citation: Mater. Chem. Front., 2017, Advance Article
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    An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V

    A. Gupta, A. Rananaware, P. Srinivasa Rao, D. Duc La, A. Bilic, W. Xiang, J. Li, R. A. Evans, S. V. Bhosale and S. V. Bhosale, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QM00084G

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