Abstract: Organic light emitting materials and devices comprising phosphorescent metal complexes comprising ligands comprising aryl or heteroaryl groups substituted at both ortho positions are described. An organic light emitting device, comprising: an anode, a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; and electron transport layer, and a cathode disposed, in that order, over a substrate.

Abstract: An organic electroluminescent device (OLED) comprising an anode; a cathode; and an emissive layer, disposed between the anode and the cathode is provided. The emissive layer comprises a phosphorescent dopant, a first host, and a second host, where the first host is a hole transporting host, the second host is an electron transporting host, the first host has a HOMO energy??5.45 eV and/or the first host comprises a structure of Formula V: and the phosphorescent dopant has a formula Ir(LA)x(LB)y(LC)z. In formula Ir(LA)x(LB)y(LC)z, ligand LA has a structure of Formula I, where: moiety A is a ring; moiety B is a fused ring structure comprising at least three rings; K is a direct bond or a linker; Z1 and Z2 are C or N; each RA and RB is hydrogen or a General Substituent defined herein. Consumer products containing the OLED are also provided.

Abstract: Provided are organometallic compounds comprising a Pt or Pd as the central metal atom which is coordinated by a tetradentate ligand comprising one 5-membered ring and at least three further rings. 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 structure of Formula I, is provided. In Formula I, each of X1 to X10, X1? to X4?, and X8? to X10? is independently C or N, but is C if attached to an R; each of R1 to R6 and RA to RG is hydrogen or a General Substituent defined herein; any two substituents may be joined or fused to form a ring; and at least one of six different conditions is met regarding RA, RB, or R3 to R6. Formulations, OLEDs, and consumer products containing the compound are also provided.

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: A compound having a structure of Formula I, provided. In the compounds, each of X1 to X12 is C or N; R is not hydrogen or deuterium; each RA and RB is hydrogen or a General Substituent defined herein; a HOMO level of the compound is greater than ?5.56 eV; and the compound does not comprise a group selected from indolocarbazole, acridine, phenoxazine, phenothiazine, 10,10-diphenyl-5,10-dihydrodibenzo[b,e][1,4]azasiline (dibenzoazasiline), inbimbim, 3,9? bicarbazole, and 3,3? bicarbazole moiety. 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 both a disclosed compound and a Pt complex compound.

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: 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 compounds of Formula I that are useful as emitters in OLEDs.

Abstract: Provided are organic compounds comprising at least one germy or silyl group which is attached to a 6-membered aromatic carbocyclic or heterocyclic ring. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organic compounds.

Abstract: Provided are organometallic compounds comprising a ligand comprising at least two moieties A and B which are linked by a linking group L2, wherein the ligand is coordinated to a central metal atom M. 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 structure of Formula I, In Formula I, moiety C is a monocyclic ring or a polycyclic fused ring system; each of Z1-Z2 and X1—X9 is C or N; Y1 is C, N, O, S, Se, P, or As; if Y1 is O, S, or Se, then either A2, R4, and L3 are absent or A1, R3, and L2 are absent; K is a direct bond or a linker; each of A1 and A2 is C, B, Ge, S, Si, N, P, or As; each of L1, L2, and L3 is absent, a direct bond, or a linker; at least two of L1, L2, and L3 are present; metal M is Pd or Pt; and each R, R?, R*, R1, R2, R3, R4, RA, RB, RC, R?, and R? is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound 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: 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 compound including a first ligand LA having a structure of Formula I is disclosed. The compound is useful a an emitter dopants in OLEDs for enhancing the OLED performance.

Abstract: Novel host compounds consisting of carbazole and nitrile groups are disclosed. These compounds are useful in phosphorescent OLEDs.

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: Provided are organic compounds comprising a nitrogen-containing 5-membered aromatic or non-aromatic ring, wherein the ring nitrogen is a tertiary nitrogen having bonds to three different carbon atoms. 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.