Polymer acceptors are a class of “non-fullerene” electron-transporting materials that can replace [6,6]-phenyl C61/71 butyric acid (PC61/71BM) in bulk-heterojunction (BHJ) solar cells. In this contribution is reported the use of N-acyl-substituted isoindigo (IID) motifs (IID(CO)) as electron-deficient units in the design of polymer acceptors for “all-polymer” BHJ solar cells. While IID motifs are commonly used in the design of polymer donors for efficient BHJ solar cells with the fullerene PC61/71BM acceptors, here it is shown that IID(CO) building units used in conjunction with suitable co-monomers represent a practical avenue for polymer acceptors with electron affinity values comparable to that of PC61/71BM (i.e., 4.2 eV).
|Original language||English (US)|
|Journal||Macromolecular Chemistry and Physics|
|State||Published - May 27 2019|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: F.C. and M.B. contributed equally to this work. The authors acknowledge the financial support under Baseline Research Funding from King Abdullah University of Science and Technology (KAUST). The authors thank KAUST Analytical Core Labs for technical support. The authors are also thankful to LCPO/Arkema/ANR INDUSTRIAL CHAIR “HOMERIC” ANR-13-CHIN-0002-01 and the LCPO support gave by all the B8 people every single day. D.M. thanks Elena Righini (IULM, Italy) for her time.