Synthesis of Conjugated Donor–Acceptor Antiaromatic Porphyrins and Their Application to Perovskite Solar Cells

A conjugated donor–acceptor antiaromatic porphyrin, composed of an antiaromatic thieno-fused porphyrin structure and a diketopyrrolopyrrole mioety, was synthesized and applied in a perovskite solar cell for the first time. Enhanced light absorption in the device by the antiaromatic porphyrin resulted in a significantly increased power conversion efficiency of 19.3%.