Yellow Organic Light‐Emitting Diodes from Heteroleptic Iridium(III) Complexes with Avobenzone Ligands as Dopants

Abstract Avobenzone as an ancillary ligand was chosen to construct two yellow iridium(III) complexes, named Irdfppyavo and Irbtavo, [dfppy, bt, and avo represent 2‐(2,4‐difluorophenyl)pyridine, 2‐phenylbenzo[ d ]thiazole, and avobenzone, respectively], which were thoroughly investigated as yellow organic light‐emitting diode dopants. Most importantly, the yellow electroluminescence devices from a luminance of 100–1000 cd m –2 displayed small power efficiency roll‐off values of 28.9 and 21.4 % for Irdfppyavo and Irbtavo, respectively.