Critical review of the molecular design progress in non-fullerene electron acceptors towards commercially viable organic solar cells

Abstract
Fullerenes have formed an integral part of high performance organic solar cells over the last 20 years, however their inherent limitations in terms of synthetic flexibility, cost and stability have acted as a motivation to develop replacements; the so-called non-fullerene electron acceptors. A rapid evolution of such materials has taken place over the last few years, yielding a number of promising candidates that can exceed the device performance of fullerenes and provide opportunities to improve upon the stability and processability of organic solar cells. In this review we explore the structure-property relationships of a library of non-fullerene acceptors, highlighting the important chemical modifications that have led to progress in the field and provide an outlook for future innovations in electron acceptors for use in organic photovoltaics.

Citation
Wadsworth A, Moser M, Marks A, Little MS, Gasparini N, et al. (2018) Critical review of the molecular design progress in non-fullerene electron acceptors towards commercially viable organic solar cells. Chemical Society Reviews. Available: http://dx.doi.org/10.1039/c7cs00892a.

Acknowledgements
We acknowledge funding from KAUST and BASF, as well as EPSRC Project EP/G037515/1, EP/M005143/1, EC FP7 Project SC2 (610115), and EC H2020 Project SOLEDLIGHT (643791) for their financial support.

Publisher
Royal Society of Chemistry (RSC)

Journal
Chemical Society Reviews

DOI
10.1039/c7cs00892a

PubMed ID
29697109

Additional Links
http://pubs.rsc.org/en/Content/ArticleLanding/2018/CS/C7CS00892A#!divAbstract

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