Highly efficient green and red electroluminescence with an extremely low efficiency roll-off based on iridium(iii) complexes containing a bis(diphenylphorothioyl)amide ancillary ligand

Two green and red Ir(iii) complexes were applied in single/double-emissive-layer OLEDs with an EQE_max of 30.8% and 18.3%, respectively, and an extremely low efficiency roll-off.