Journal
CHEMICAL COMMUNICATIONS
Volume 52, Issue 55, Pages 8522-8525Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cc03730e
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Funding
- Australian Research Council (ARC), Australia [FT110100152]
- CSIRO Division of Manufacturing, Clayton Victoria
- ARC, Australia [FT130100057]
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Through the conjunction of tetraphenylethylene and diketopyrrolopyrrole functionalities, a novel four-directional non-fullerene electron acceptor (denoted as 4D) was designed, synthesized and characterized. The new chromophore is highly soluble (for instance > 30 mg mL(-1) in o-dichlorobenzene), thermally stable, and exhibits energy levels matching those of the conventional and routinely used donor polymer poly(3-hexyl thiophene). A power conversion efficiency of 3.86% was obtained in solution-processable bulk-heterojunction devices with a very high open circuit voltage of 1.18 V.
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