Abstract: An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [LA]3-nIr[LB]n is disclosed.

Abstract: Provided are organometallic compounds including a ligand LA having a structure of Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Please replace the Abstract with the following replacement version which is marked up to show the changes. A compound comprising a first ligand LA of Formula I, is provided. In the compound, moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1 to X6 is C or N; K is a direct bond or a linking group; at least one RA comprises silyl or germyl; any RA that is silyl or germyl does not form a 5-membered ring with another RA; each substituent is hydrogen or a General Substituents defined herein; the first ligand LA is coordinated to a metal M by the dashed lines. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of moiety A, moiety B, and moiety C is ring or a polycyclic fused ring system; each of X and Z1 to Z5 is C or N; Y is N, B, and P; each of K1 and K2 is a direct bond or a linker; each R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein; any two substituents can be joined or fused together to form a ring; and the ligand LA is coordinated to a metal M by the dashed lines. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.

Abstract: Provided are multicyclic organic electroluminescent compounds having a ligand LA of Formula I shown below: Also provided are OLEDs and related consumer products that contain an organic layer having these organic electroluminescent compounds.

Abstract: Provided are organometallic compounds including a ligand LA of the following Formula I Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound comprising a first ligand LA of Formula I?, or Formula I*: In Formula I? or Formula I*, all the variables are defined herein; and LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are transition metal compounds having 1,2,3-triazine. Also provided are formulations comprising these transition metal compounds having 1,2,3-triazine. Further provided are OLEDs and related consumer products that utilize these transition metal compounds having 1,2,3-triazine.

Abstract: Provided are compounds of formula Ir(LA)2LC where: each ligand LA can be the same or different and has Formula I Also provided are formulations comprising these iridium complexes comprising pyridine-azole ligands. Further provided are OLEDs and related consumer products that utilize these iridium complexes comprising pyridine-azole ligands.

Abstract: Provided are organometallic compounds having a structure of Formula I: Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound comprising a first ligand LA comprising a structure of Formula I, is provided. In Formula I, each of moiety A, moiety B, and moiety C is a monocyclic ring or a polycyclic fused ring system, where moiety A and moiety C comprise a nitrogen and moiety C is aromatic; each of Z1, Z2, Z3, and Z4 is C or N; each of K1 and K2 is a direct bond or a linker; Y is a linking group; each R, R?, RA, RB, RC, R?, and R? is hydrogen or a General Substituent defined herein; and the first ligand LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.

Abstract: A compound having a first ligand LA of Formula I, In Formula I, each of moiety B and moiety C is a monocyclic ring or a polycyclic fused ring system; each of Z1, X1, and X2 is C or N; K is a direct bond or a linker; each R?, R?, RA, RB, and RC is hydrogen or a General Substituents defined herein; at least one RA comprises an electron-withdrawing group, a silyl group, or a germyl group; LA is coordinated to a metal M, having an atomic mass of at least 40; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: Novel Iridium complexes having three different bidentate ligands useful for phosphorescent emitters in OLEDs are disclosed. At least one of the three different bidentate ligands is a carbene ligand.

Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand comprised of a fused heterocyclic structure containing boron. The disclosed ligands form two bonds to the metal forming a 6-membered chelate and can be further substituted to form tridentate or tetradentate ligands.

Abstract: A compound having a structure of Formula I In Formula I, M is Pd or Pt; each of X1 to X12 is independently C or N; ring A is a 5-membered or 6-membered ring; K1 and K2 are selected from a direct bond, O, S, and NR; L1 is an organic linker; Y1 is selected from O, S, BR, PR, Se and NRY; each R, RY, RA, RB, RC, and RD is hydrogen or a substituent; and any two substituents can be joined or fused to form a ring. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [LA]3-nIr[LB]n is disclosed.

Abstract: Provided are organometallic compounds comprising two moieties A and B which are each independently a monocyclic ring or a polycyclic fused ring structure, wherein the monocyclic ring or each ring of the polycyclic fused ring structure is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring which are linked by a direct bond and which are further bridged by a linker comprising two groups which are each independently selected from the group consisting of O, S, Se, NR, BR, BRR?, PR, CR, C?O, C?NR, C?CRR?, C?S, CRR?, SO, SO2, P(O)R, SiRR?, and GeRR?. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.

Abstract: A compound comprising a first bidentate ligand LA, wherein LA comprises a structure of Formula I; wherein Z is selected from the group consisting of O, S, NR, BR, CRKRL, C?CRKRL, SiRKRL, —CRKRLCRMRN—, —SiRKRLSiRMRN—, —CRKRLO—, —SiRKRLO—, and —CRK?CRL—; wherein ring A, ring B, and ring C are each independently a 5-membered carbocyclic ring, 5-membered heterocyclic ring, 6-membered carbocyclic ring or 6-membered heterocyclic ring; wherein LA is coordinated to a metal M forming a 5-membered chelate ring; wherein M is selected from the group consisting of Ir, Pt, Pd, Ru, Rh, Os, Re, Cu, Ag, and Au; wherein RA, RB, and RC each represent mono to the maximum allowable substitution, or no substitution; wherein each R, RK, RL, RM, RN, RA, RB, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, boryl, selenyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, a