N ‐Acylisoindigo Derivatives as Polymer Acceptors for “All‐Polymer” Bulk‐Heterojunction Solar Cells

Federico Cruciani (1, 2) , Maxime Babics (3) , Shengjian Liu , Daniela Carja , Daniele Mantione (1, 2) , Pierre Beaujuge (3)

1 LCPO - Laboratoire de Chimie des Polymères Organiques
2 Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
3 KAUST - King Abdullah University of Science and Technology [Saudi Arabia]

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).

Domaines: Polymères

Federico Cruciani, Maxime Babics, Shengjian Liu, Daniela Carja, Daniele Mantione, et al.. N ‐Acylisoindigo Derivatives as Polymer Acceptors for “All‐Polymer” Bulk‐Heterojunction Solar Cells. Macromolecular Chemistry and Physics, 2019, pp.1900029. ⟨10.1002/macp.201900029⟩. ⟨hal-02924138⟩