Abstract: A composition of materials including a first compound having a structure according to Formula I

Abstract: Provided are organic compounds including a structure wherein two 6-membered aromatic rings are connected with a direct bond and further linked by a linker 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? so to form a 5-membered ring including the linker. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic compounds.

Abstract: Provided is a compound of Formula Ir(LA)(LB)(LC), wherein LA is a ligand of LB is a ligand of and LC is a ligand of wherein a structure of is fused to the ligand LB of Formula II through two adjacent C of X1-X4.

Abstract: Designs and arrangements for sublimation cells are provided, which enriches an inert carrier gas with organic vapor such that the partial pressure of the organic vapor is highly stable in time. Stability is achieved by controlling the local rates of evaporation along the solid-gas interface through one or more crucibles, thereby reducing the effects of greater headspace and lowering interfacial area as the source depletes. Local evaporation rates also can be controlled using either temperature distribution or convective flow fields.

Abstract: Provided are organometallic compounds comprising a carbazole group as the central moiety to which at least two further groups selected from carbazole and benzo[d]benzo[4,5]imidazo[1,2-a]imidazole are attached. 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: An OLED comprising an anode, a cathode, and an emissive layer, disposed between the anode and the cathode is provided. The emissive layer comprises a first phosphorescent emitter and a first host, where the first phosphorescent emitter is a metal complex; the first host is partially or fully deuterated; the first host is an electron transporting host; and the first host has a HOMO level (H1HOMO) greater than ?5.65 eV, with the proviso that the first host is at least 25% deuterated if H1HOMO is less than ?5.6 eV. Consumer products incorporating the OLED are also provided.

Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

Abstract: A novel compound selected from is disclosed.

Abstract: Fluorine substituted metal complexes as efficient phosphorescent emitters is disclosed. The fluorine substitution is at para position of a phenyl group.

Abstract: Novel Pt tetradentate complexes having Pt—O bond is disclosed. These complexes are useful as emitters in phosphorescent OLEDs.

Abstract: Provided are neutral Pt or Pd organometallic compounds comprising a tetradentate ligand, wherein the organometallic compound comprises at least one Pt—C or Pd—C bond. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

Abstract: Arrangements for phosphorescent blue emissive materials, layers, and devices are provided. The arrangements include a host having first a triplet energy level of at least 2.8 eV and an absolute difference of not more than 0.3 eV between the first singlet and triplet energy levels, and an emitter that includes an emissive transition metal complex and a first triplet energy level of at least 2.7 eV.

Abstract: Provided are novel compounds having a structure of that are useful as emitters in OLEDs.

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: 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, R? includes at least one fluorine atom; R? 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 of Formula I that are useful as emitters in OLEDs.

Abstract: A compound comprising a bidentate ligand LA, comprising a moiety W is disclosed. W is a cyclic structure including three or more aromatic moieties joined to each other by direct bonds, wherein W can be substituted. Ligand LA is coordinated to a metal M, and can be joined with other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand. The compound does not form part of an interlocked compound. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds that include a ligand LA of that are useful as emitters in OLEDs. 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 of Formula I, is provided. In Formula I, K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); each of X1 to X8 is C or N; Y is a linking group; each R?, R?, R, R?, R?, R1, RA, RB, and RC is hydrogen or a General Substituent; at least one RC is R*; R* has a structure of Cy-R**, where Cy is a monocyclic ring or a polycyclic fused ring system, which can be further substituted, and R** comprises (i) at least one electron-withdrawing group, (ii) a monocyclic ring or a polycyclic fused ring system, where the monocyclic ring and each ring of the polycyclic fused ring system is independently a 5-membered or 6-membered carbocyclic or heterocyclic ring, or (iii) both (i) and (ii); and LA is coordinated to a metal. 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 A is a 5-membered or 6-membered ring; moiety B is a fused ring structure comprising at least four rings; K is a direct bond, O, or S; each of Z1 and Z2 is independently C or N; each RA and RB is independently hydrogen or a General Substituent; at least one RB comprises a cyclic group or an electron-withdrawing group; LA is coordinated to a metal M that has an atomic mass of at least 40 and is optionally coordinated to other ligands; and the ligand LA is optionally linked with other ligands. Formulations, OLEDs, and consumer products including the compound are also provided.