Low bandgap copolymers based on monofluorinated isoindigo towards efficient polymer solar cells
Literature Information
Publication Date
2015-07-03
DOI
10.1039/C5PY00693G
Impact Factor
5.582
Authors
Farid Ouhib, Arnaud Wislez, Anne-Sophie Duwez, Huguette Penxten, Wouter Dierckx, Ilaria Cardinaletti, Ralf A. A. Bovee, Gijs W. P. van Pruissen, Christine Jérôme, Jean Manca, Christophe Detrembleur
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Abstract
To explore the effectiveness of monofluorinated isoindigo as an electron-deficient building block in push–pull conjugated polymers for organic solar cell applications, four low bandgap copolymers are effectively synthesized and characterized. The effects of fluorine introduction, thiophene spacer length and polymer molar mass on the general electro-optical polymer characteristics, thin film blend microstructure and electronic performance are investigated. Isoindigo monofluorination effectively improves the power conversion efficiency from 2.8 up to 5.0% upon molar mass optimization, without using any processing additives or post-treatments.
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Polymer Chemistry
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