Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); LA is coordinated to Ir through the indicated dashed lines; at least one of the following conditions is true: (1) R1 comprises at least five carbon atoms, and (2) two RB substituents are joined together to form a structure of Formula II, fused to ring B; X is CRX or N; Y is selected from a variety of linkers; each R, R?, R?, R?, R?, RA, RB, RX, R1, and R2 is hydrogen or a General Substituent; and Ir may be coordinated to other ligands. Compositions, OLEDs, and consumer products including the compound are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X8 is C or N; is a single bond or a double bond; K is a direct bond or a linking group; RA, RB, and RC are each hydrogen or a General Substituent; LA is coordinated to a metal M, having an atomic weight of at least 40; any two substituents may be joined or fused to form a ring; and (i) two RA substituents are joined to form a ring fused to ring A, (ii) two RB substituents are joined to form a ring fused to ring B, or (iii) both condition (i) and condition (ii). Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety A is a fused polycyclic ring system; moiety B is a monocyclic ring or a fused polycyclic system; ring C is a 5-membered ring; ring D is a 6-membered ring; Y is N, B, or P; each of Z1 to Z4 is C or N; X1 is CR1 or N; each of K1 and K2 is a direct bond or a linker; each R1, R2, R?, R?, RA, and RB is hydrogen or a General Substituent defined herein; and LA is joined to a metal M by the dashed lines. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature that includes at least one aromatic ring and at least one substituent R where each of the at least one R is of Formula I

Abstract: A compound comprising a first ligand LA of Formula I, In Formula I, moieties A, B, C, and D are each independently a monocyclic ring or a polycyclic fused ring system; each of Z1, Z2, and X1 to X7 is independently C or N; K is selected from a direct bond and a linker; each R?, R?, RA, RB, RC, and RD is hydrogen or a General Substituent defined herein; any two substituents may be joined or fused to form a ring; LA is joined to a metal M that has an atomic mass of at least 40; M may be coordinated to other ligands; and LA may be joined with other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Novel ligands for metal complexes containing five-membered ring fused on pyridine or pyrimidine ring combined with partially fluorinated side chains exhibiting improved external quantum efficiency and lifetime are disclosed.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X12 is C or N; Y is a linking group; each RA, RB and RC can be hydrogen or a substituent; at least one RA, RB or RC comprises an electron-withdrawing group; and LA forms a 5-membered chelate ring with an Ir atom via the dashed lines. In addition a number of conditions must be met based on whether or not any pair of RA is joined to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organoiridium compounds that are useful as emitters in OLEDs. The compounds have Formula I L1L2Ir-L-Ir-L3L4, where: L is a bis-bidentate ligand including two or more aromatic rings; one of the two or more aromatic rings is bonded to the two Ir atoms at the same time; and each of L1, L2, L3, and L4 is independently a bidentate N-heterocyclic carbene ligand or a substituted or unsubstituted acetylacetonate ligand with L1, L2, L3, and L4 each being the same or different. Also provided are formulations including these organoiridium compounds. Further provided are OLEDs and related consumer products that utilize these organoiridium compounds.

Abstract: A compound including a first ligand LA of Formula I is disclosed. The compound is useful as an emitter in phosphorescent OLEDs.

Abstract: Provided are transition metal compounds having 5-membered carbocyclic or heterocyclic ring in a unique configuration of fused rings per Formula I The compounds show improved phosphorescent emission in red to near IR region and are useful as emitter materials in organic electroluminescence device.

Abstract: Novel ligands for metal complexes containing five-membered ring fused on pyrimidine ring combined with partially fluorinated side chains exhibiting improved external quantum efficiency and lifetime are disclosed.

Abstract: Provided are organometallic complexes including 5-membered heterocyclic rings. The compounds include a ligand LA having a structure of Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: A compound of Formula Ir(LA)m(LB)n, where LA has a structure of Formula I, and LB has a structure of Formula II, is provided. In Formula Ir(LA)m(LB)n, m and n are 1 or 2; m+n=3; moiety D is a monocyclic ring or a polycyclic fused-ring system containing up to three fused rings; R is H, D, methyl, or partially or fully deuterated methyl; each R1, R2, R3, R4, R5, R6, RA, RB, RC, RD, and RE is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: A composition comprising a first compound capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is disclosed. The first compound has at least one aromatic ring with at least one substituent R of Formula I In the structure of Formula I, R1 includes at least one fluorine atom; R2 represents mono to a maximum possible number of substitutions, or no substitution; each R2 is a hydrogen or one of a variety of substituents; L is an organic linker or direct bond; any two R1, R2 substituents may be joined or fused together to form a ring; the dashed line of Formula I is a bond to a first aromatic ring of the at least one aromatic ring; and n is an integer from 1 to 10. Organic light emitting devices and consumer products containing the compounds are also disclosed.

Abstract: Provided are compounds including a ligand LA of that are useful as emitters in OLEDs, where at least one of RA and RB is

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); LA is coordinated to Ir through the indicated dashed lines; at least one of the following conditions is true: (1) R1 comprises at least five carbon atoms, and (2) two RB substituents are joined together to form a structure of Formula II, fused to ring B; X is CRX or N; Y is selected from a variety of linkers; each R, R?, R?, R?, R?, RA, RB, RX, R1, and R2 is hydrogen or a General Substituent; and Ir may be coordinated to other ligands. Compositions, OLEDs, and consumer products including the compound are also provided.

Abstract: Provided is an OLED having an anode, a cathode and an organic emissive layer disposed between the anode and the cathode.

Abstract: A compound comprising a first ligand LA of Formula I, In Formula I, moiety B is a monocyclic ring or a polycyclic fused ring system; X1, X2, and Z1 are C or N; Y1 is O, S, Se, Te, CRR?, SiRR?, GeRR?, PR, AsR, SbR, or BiR; K1 is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); each R, R?, R?, R?, RA, and RB is hydrogen or a general substituent; any two substituents may be joined or fused to form a ring; LA is coordinated to a metal M to form a 5-membered or 6-membered chelate ring; and two RB substituents join to form a 5-membered ring if Y1 is O, S, or Se. Formulations, OLEDs, and consumer products comprising the compound are also provided.

Abstract: A compound comprising a ligand of LA of Formula I, is provided with variables as defined herein. Formulations, OLEDs, and consumer products including the compound are also disclosed.