Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, rings A and B are 5- or 6-membered ring; K1 and K2 are each independently selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); Z1, Z2, X1 and X2 are C or N; Y1*, Y2*, Y1*, Y4*, and Y5* are selected from a variety of moieties; n is 0 or 1; Y5* is bonded directly to X2 when n is 0; each Ra, R?, R, R?, R1, R2, RA, and RB is hydrogen or a substituent; each independently represents a single bond or double bond in a Lewis structure; and LA is coordinated to a metal M, which may be coordinated to other ligands 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, moiety C is a monocyclic ring or fused polycyclic system; each of X1 to X6 is C or N; K is a direct bond or a linker; at least one of RB or RC has the formula -L-SiR1R2R3, or -L-GeR1R2R3; L is a direct bond or an organic linker; each R?, R?, R1, R2, R3, RA, RB, and RC is hydrogen or a General Substituent defined herein; LA is coordinated to a metal M by the dashed lines in Formula I; and M has an atomic mass of at least 40 and may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds comprising a first chemical moiety, wherein the first chemical moiety comprises a first heterocyclic ring or a polycyclic fused ring system comprising at least one of the first heterocyclic ring; wherein the first heterocyclic ring comprises at least one Si or Ge atom as the ring atom; wherein in the polycyclic fused ring system, the at least one of the first heterocyclic ring has at most one bond being part of an aromatic ring; wherein the compound further comprises a second chemical moiety; wherein the second chemical moiety is selected from the group consisting of triphenylene, tetraphenylene, carbazole, dibenzothiophene, dibenzofuran, dibenzoselenophene, dibenzofluorene, benzo[d]benzo[4,5]imidazo[1,2-a]imidazole (bimbim), indolocarbazole, indolodibenzothiophene, indolodibenzofuran, indodibenzoselenophene, indolodibenzofluorene, naphthalene, germyl, boryl, amino, pyridine, pyridazine, pyrimidine, pyrazine, triazine, imidazole, benzimidazole, and aza variants thereof; and wherein the

Abstract: A compound of Formula I, is provided. In Formula I, rings B and C are 5-membered or 6-membered carbocyclic or heterocyclic rings; Z is B, Al, or Ga; Y1 and Y2 are linking groups that can include R and R?; X1, X2, and X3 are C or N; each R, R?, RA, RB, and RC is hydrogen or a General Substituent; at least one of R, R?, RA, RB, and RC comprises L-SiAr1Ar2Ar3; wherein each is a single bond or a double bond; L is a direct bond or an organic linker; and each of Ar1, Ar2, and Ar3 is a 5-membered or 6-membered carbocyclic or heterocyclic ring.

Abstract: The present invention includes novel compounds containing hexaphenyl borazine or azahexaphenyl borazine substituted with heterocycles or azaheterocycles were disclosed in this application. These compounds are useful as host materials for phosphorescent electroluminescent devices.

Abstract: An OLED structure including a first organic layer disposed between the anode and the cathode is disclosed. The first organic layer includes a primary phosphorescent emitter and a first host, and where one of the following conditions is true: (1) the first organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer disposed between the anode and the cathode, wherein the second organic layer includes a secondary emitter. The phosphorescent emitter has a peak emission wavelength ?max that is ?600 nm and ?750 nm, the secondary emitter has a peak emission wavelength ?max that is ?750 nm, and the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter.

Abstract: Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

Abstract: Novel phosphorescent heteroleptic iridium complexes with phenylpyridine and dibenzo-containing ligands are provided. Alkyl substitution at specific positions on the ligands gives rise to compounds with improved OLED properties, including saturated green emission.

Abstract: A compound including a first ligand LA selected from the following group: is disclosed.

Abstract: Provided are compounds comprising first ligands LA being hetero-benzofused ligands of Pt and Ir complexes for OLED applications. Also provided are formulations comprising these compounds comprising first ligands LA being hetero-benzofused ligands of Pt and Ir complexes for OLED applications. Further provided are OLEDs and related consumer products that utilize these compounds comprising first ligands LA being hetero-benzofused ligands of Pt and Ir complexes for OLED applications.

Abstract: Provided are organic and organometallic compounds which comprise first structure comprising a benzimidazole or benzopyrazole moiety which is linked to a second structure comprising at least two aromatic 6-membered rings. Also provided are formulations comprising these organic and organometallic compounds. Further provided are organic light-emitting devices (OLEDs) and related consumer products that utilize these organic and organometallic compounds.

Abstract: A compound having a formula of M(LA)p(LB)q(LC)r, where LA has a structure of Formula I, LB is a bidentate ligand; and LC has a structure of Formula II, is provided. In Formula I and Formula II, the compound can be homoleptic or heteroleptic and can include up to three different ligands; K3 and K4 are each independently a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); each of moiety A and moiety B represents a monocyclic ring or a polycyclic, fused-ring structure; each of Z1 and Z2 is C or N; and at least one of RA, RB, RC1, RC2, or RC3 comprises a structure of Formula III, In Formula III, L is bivalent organic linker, and Z is Si or Ge. Each RA, RB, RC1, RC2, and RC3 is independently hydrogen or a General Substituent, and each of R1, R2, and R3 is a General Substituent. Formulations, OLEDs, and consumer products including such compounds are also provided.

Abstract: Systems and methods for depositing materials on a substrate via OVJP are provided. A float table and grippers are used to move and position the substrate relative to one or more OVJP print bars to reduce the chance of damaging or compromising the substrate or prior depositions.

Abstract: Methods and OLED devices are provided in which organic emissive materials are deposited over a substrate via OVJP print heads in a continuous line extending from one edge of the active display portion of a substrate to another. The print heads are arranged such that the sidewalls of the OVJP jet are disposed over non-emissive insulating portions of the display panel, thereby allowing for improved pixel density and resolution in comparison to conventional OVJP and similar techniques.

Abstract: New organometallic complexes having bis- or tris-heteroleptic ligands and large aspect ratio in one direction and their use in OLEDs to enhance the efficiency is disclosed.

Abstract: A compound having a structure of formula Ir(LA)m(LB)n, where ligand LA has Formula I and ligand LB has Formula II that is useful as an emitter in OLEDs is disclosed.

Abstract: A compound is disclosed that is selected from the group consisting of a structure having and a structure having

Abstract: A compound having a structure of Formula I, is provided. In Formula I, M is Pt or Pd; rings A, B, C, and D are 5-membered or 6-membered rings; one of Z1, Z2, and Z3 is N and the other two are C; each of X1 to X10 is C or N; K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); each of L1 and L2 is a direct bond or a linker; each R, R?, R?, R?, R?, RA, RB, RC, RD, and RE is hydrogen or a General Substituent; R1 is a substituent; at least one RE comprises a substituent selected from the group consisting of aryl, heteroaryl, cycloalkyl, and heteroalkyl; any two substituents may be joined or fused to form a ring, except that RE at X3 or X4 cannot be joined with RA to from a ring. Formulations, OLEDs, and consumer products including the compound are also provided.

Abstract: A heteroleptic compound of Formula Ir(LA)x(LB)y is provided, where LA has Formula I, and a structure of Formula II, is bonded to two adjacent C atoms selected from X1, X2, X3, and X4 by the dashed lines to form a fused ring; and LB is selected from the group consisting of

Abstract: Provided are ortho-substituted biphenyl compounds with one or more bicarbazole linkages. Also provided are formulations comprising these ortho-substituted biphenyl compounds. Further provided are OLEDs and related consumer products that utilize these ortho-substituted biphenyl compounds.