High‐Performance Electron Acceptors Containing Transition Metals

A novel molecular platform characteristic of multiple transition metals (CH‐Zn, CH‐Ni, CH‐Pt) on conjugated backbones, is firstly established as high‐performance electron acceptors. The CH‐Pt‐based ternary organic photovoltaics render an excellent power conversion efficiency surpassing 20%, more importantly, the unexplored dependency of central metals on intrinsic physicochemical properties of acceptors, nanoscale morphologies of donor/acceptor blends and final photovoltaic outcomes is fully disclosed. By demonstrating such a rare case of metal‐containing acceptor, our work provides insight into whether metal complexes can serve as the building blocks of high‐performance acceptors and gives guidance to rational design of metal‐containing acceptors.