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Issue 27, 2016
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Structure–property relationships for bis-diketopyrrolopyrrole molecules in organic photovoltaics

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Abstract

The design of small organic molecules for efficient solution-processed organic solar cells is hampered by the absence of relationships that connect molecular structure via processing to blend morphology and power conversion efficiency. Here we study a series of bis-diketopyrrolopyrrole molecules in which we systematically vary the aromatic core, the solubilizing side chains, and the end groups to achieve power conversion efficiencies of 4.4%. By comparing the morphology and performance we attempt to identify and rationalize the structure–property relationships. We find that the tendency to aggregate or crystallize are important factors to control and that these require a subtle balance.

Graphical abstract: Structure–property relationships for bis-diketopyrrolopyrrole molecules in organic photovoltaics

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Publication details

The article was received on 20 Feb 2016, accepted on 11 Jun 2016 and first published on 14 Jun 2016


Article type: Paper
DOI: 10.1039/C6TA01533F
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J. Mater. Chem. A, 2016,4, 10532-10541
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    Structure–property relationships for bis-diketopyrrolopyrrole molecules in organic photovoltaics

    Q. (. Wang, J. J. van Franeker, B. J. Bruijnaers, M. M. Wienk and R. A. J. Janssen, J. Mater. Chem. A, 2016, 4, 10532
    DOI: 10.1039/C6TA01533F

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      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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