申请人:Universal Display Corporation
公开号:US20220085302A1
公开(公告)日:2022-03-17
A compound having a ligand L
A
of Formula I,
is disclosed. In Formula I, ring B is a 5-membered or 6-membered ring; K is a direct bond, O, or S; X is O, S, Se, NR, CRR′, SiRR′, or GeRR′; R
1
and R
2
are each independently selected from a variety of substituents; each R, R′, R
A
, and R
B
is independently hydrogen or a substituent; L
A
is coordinated to a metal M selected from Os, Ir, Pd, Pt, Cu, Ag, or Au by the dashed lines; any two adjacent of R
1
, R
2
, R, R′, R
A
, or R
B
can be joined or fused to form a ring, with the proviso that when ring B is a 6-membered ring, two R
B
substituents are not joined to form a fused 6-membered aromatic ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.