Publication number: 20230018990
Abstract: A compound including a bidentate ligand LA comprising a structure of Formula I, is disclosed. In Formula I, ring A? is a 7-, 8-, or 9-membered ring structure; X is of NR2, O, CR, CRR?, S, or SiRR?; each of RA?, R1, and R2 is independently hydrogen or a substituent; R1? is independently absent or a hydrogen or a substituent; any two adjacent RA?, R1, R1?, and R2 can be joined or fused to form a ring; the ligand LA is coordinated to a metal, which is selected from Os, Ir, Pd, Pt, Cu, Ag, or Au; and (1) at least one of R1 and R2 is coordinated to the metal M, or (2) at least one RA? comprises a 5- or 6-membered carbocyclic or heterocyclic ring that is not directly fused to Ring A? and is coordinated to the metal M, or both (1) and (2) are true. Formulations, devices, and consumer products including the compound are also disclosed.
Type:
Application
Filed:
April 25, 2022
Publication date:
January 19, 2023
Applicant:
Universal Display Corporation
Inventors:
Hsiao-Fan CHEN, Joseph A. MACOR, Neil PALMER, Peter WOLOHAN, Tyler FLEETHAM, Geza SZIGETHY, Rasha HAMZE