Highly efficient polyacetylene-based polyelectrolytes as cathode interfacial layers for organic solar cell applications

In this article, we report new series of polyacetylene-based polyelectrolytes, P1-P3 incorporated as CILs for the electron collecting ZnO buffer layers in IOSCs based on PTB7-Th:PC70BM and PTB7:PC70BM can significantly boost PCE to 9.37% and 8.29%, respectively which exhibits a 10% improvement compared to that of the ZnO-based control IOSCs device. Inspiringly, these CILs with ZnO also further improves the device stability.156