8 ELECTROLUMINESCENT DEVICES BASED ON PHOSPHORESCENT IRIDIUM AND RELATED GROUP VIII METAL MULTICYCLIC COMPOUNDS

摘要

A phosphorescent material comprising a complex of a metal atom M selected from Ir, Pt, Rh, Pd, Ru, and Os with at least one ligand L (wherein ligand L is represented by Formula 1) is disclosed. Further, an organic electroluminescent device containing such a phosphorescent material is disclosed.