Abstract

All-polymer solar cells (all-PSCs) use blend of polymer electron donor and polymer electron acceptor as active layer. There are much less polymer electron acceptors than polymer electron donors. In contrast to the molecular design of typical polymer acceptors using imide structure, we proposed in 2015 to design polymer acceptors using boron-nitrogen coordination bond (B 6% in 2017. Finally, we outlook the future of high efficiency all-PSC devices based on polymer acceptors containing B <- N unit.

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