Monolithic Perovskite–Perovskite–Organic Triple-Junction Solar Cells with a Voltage Output Exceeding 3 V

Monolithic integration of perovskite–perovskite–organic subcells yields a triple-junction solar cell with a record open-circuit voltage of 3.03 V and a power conversion efficiency of 19.4%. The proposed triple-junction architecture represents a milestone toward scalable photovoltaics, targeting efficiencies beyond the limit of single-junction devices.