abstract |
Electronic displays including organic light emitting diodes having an organic layer including a compound including a ligand having the formula: n nis disclosed. In these formulas, each R 1 , R 2 , and R 3 is independently selected from hydrogen, alkyl, and aryl; at least one of R 1 and R 2 is a branched alkyl containing at least 4 carbon atoms, where the branching occurs at a position further than the benzylic position; where R 1 and R 3 are mono-, di-, tri-, tetra-, or no substitutions; and R 2 is mono-, di-, or no substitutions. Emissive layers including a host material doped with these heteroleptic iridium complexes are also disclosed. |