13.76% efficiency nonfullerene solar cells enabled by selenophene integrated dithieno[3,2-b:2′,3′-d]pyrrole asymmetric acceptors

An asymmetric heptacyclic electron-donating core, namely DTPPSe, was developed by integrating selenophene and dithieno[3,2-b:2′,3′-d]pyrrole (DTP) building blocks.