Towards high performance solution-processed orange organic light-emitting devices: precisely-adjusting properties of Ir(iii) complexes by reasonably engineering the asymmetric configuration with second functionalized cyclometalating ligands

By reasonably engineering the asymmetric configuration with purposely selected second ligands, the complex SIrB exhibits outstanding electroluminescence performance with peak EQE, CE, and PE of 23.2%, 66.5 cd A⁻¹, and 56.0 lm W⁻¹, respectively.