[EN] The widespread use of nonfullerene-based electron-accepting materials has triggered a rapid increase in the performance of organic photovoltaic devices. However, the number of efficient acceptor compounds available is rather limited, which hinders the discovery of new, high-performing donor:acceptor combinations. Here, we present a new, efficient electron-accepting compound based on a hitherto unexplored family of well-known molecules: gold porphyrins. The electronic properties of our electron-accepting gold porphyrin, named VC10, were studied by UV-Vis spectroscopy and by cyclic voltammetry (CV) , revealing two intense optical absorption bands at 500-600 and 700-920 nm and an optical bandgap of 1.39 eV. Blending VC10 with PTB7-Th, a donor polymer, which gives rise to an absorption band at 550-780 nm complementary to that of VC10, enables the fabrication of organic solar cells (OSCs) featuring a power conversion efficiency of 9.24% and an energy loss of 0.52 eV. Hence, this work establishes a new approach in the search for efficient acceptor molecules for solar cells and new guidelines for future photovoltaic material design.F.L. and P.d.l.C. thank MCI (Spain) (PID2019-105049RB-I00), MICIU (RED2018-102815-T), the Junta de Comunidades de Castilla-La Mancha, and the European Social Fund (SBPLY/17/180501/000254) for financial support. V.C. thanks MECD for an FPU grant (FPU15/02170). G.D.S. thanks the Government of India SERI-DST (DST/TMD/SERI/D05(c)) for financial support. J.M. thanks the MICINN for grant PGC2018-094620-A-I00
