High-efficiency and air stable fullerene-free ternary organic solar cells

High-efficiency (11.41%) and air stable fullerene-free ternary OSCs were achieved by incorporating N2200 with PBDB-T:ITIC system, resulting from enhanced photon harvesting and favourable morphology. Furthermore, the champion PCE of ternary OSCs approaches 11.40% or 12.10% with ITIC-Th or IT-M replacing ITIC, respectively.247