Abstract: Provided are organometallic compounds comprising a ligand which is at least a two-dentate ligand which comprises at least one 5-membered nitrogen containing heterocyclic ring, the nitrogen of which is bonded to the central metal atom. 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 having a Pt tetradentate structure of Formula 1, is provided. In the structure of Formula 1, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L1, L2, and L3 are each independently a direct bond, BR, NR, PR, O, S, Se, C?O, S?O, SO2, SiRR?, GeRR?, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NRE, O, S, and Se; X3 and X4 each independently carbon or nitrogen; and one of Q1, Q3, and Q4 is oxygen, and the remaining two of Q1, Q3, and Q4 each represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.

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

Abstract: Provided are organic compounds comprising as the central structure two 6-membered aromatic rings which are bond to each other via a direct bond, wherein a first ring of the two 6-membered aromatic rings comprises at least one nitrogen atom but not more than three nitrogen 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.

Abstract: A compound of Formula MLALB where M is Pd or Pt; LA comprises Formula I, and LB comprises Formula II, is provided. In Formulas I and II, moiety A is a monocyclic ring or a polycyclic fused ring system; Z1 is a carbene carbon; each of X1 to X12 and Z2 to Z4 is C or N; each of Y1 and Y2 is a linking group; each of K3 and K4 is a direct bond or a linking group; LA and LB are joined by a direct bond or a linking group; each R, R?, R?, R?, RA, RB, RC, RD, and RE is hydrogen or a General Substituent defined herein; and LA and LB can be further linked to form a macrocyclic tetradentate ligand. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds including a ligand LA of 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 having a structure of Formula I is disclosed, where at least one of R1 and R2 that is ortho to a boron atom of Formula I comprises a structure selected from (9-carbazolyl)-carbazole, indolocarbazole, triphenylene, fluorene, dibenzothiophene, dibenzofuran, dibenzoselenophene, pyridine, pyrimidine, triazine, aza-triphenylene, aza-fluorene, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

Abstract: This present invention includes novel ligands for metal complexes, which include three fused cycles or heterocycles. The first ring may be either a pyridine or a pyrimidine ring, which coordinates with the iridium metal. The second ring may be a six-membered ring, which may or may not contain nitrogen atoms. The third ring may be either a five or six membered ring. The combination of these aromatic rings provides near infrared or infrared emission in PHOLEDs devices. The bottom ring of the ligand is an alkylated cycle or heterocycle which provides a good efficiency and emission line shape.

Abstract: Provided are organometallic compounds comprising an Ir as the central metal atom which is coordinated by three ligands LA, LB, and LC, wherein ligands LA and LB comprise at least two 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: Provided are organometallic compounds comprising an Ir atom as the central metal atom which is coordinated by at least two ligands which are different from each other, wherein at least one of the ligands comprises at least one flour atom. 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 having a structure of Formula I, is provided. In Formula I, each of Y1 to Y12 is CR or N; each R can be same or different; each R is hydrogen or a substituent; at least one pair selected from Y3-Y4, Y7-Y8, or Y11-Y12 are CR and the Rs are joined or fused into a ring; and LA is complexed to a metal M selected from the group consisting of Os, Ir, Pd, and Pt. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: The present invention relates to novel light-emitting materials. These materials comprise a side chain that includes a fully deuterated or partially deuterated alkyl chain. This new side chain could improve device lifetime compared to nondeuterated side chains.

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

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 organic compounds comprising as a central structure two 6-membered aromatic rings which are bond together via a direct single bond. 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 and/or OLEDS.

Abstract: A compound comprising a metal tetradentate coordination configuration of Formula I, with a tetradentate ligand is provided. In the compound, M is Pt or Pd; Z11, Z12, Z13, and Z14 are the four coordinating atoms of the tetradentate ligand; the compound comprises a first ring system consisting of all atoms of all metal-containing rings formed by the metal M and the tetradentate ligand; atoms M, Z11, Z12, Z13, and Z14 define a first plane that passes through the metal M and is positioned to have a minimum sum of shortest distances with Z11, Z12, Z13, and Z14; wherein a total distance between the atom of the first ring system farthest away from the first plane on each side of the first plane (h1+h2) is at least 6.1 ?. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Disclosed is a device that includes an emissive material or region including a host that is doped with a first material as an emitter that is an acceptor and a phosphorescent-capable second material as a sensitizer. The first material and the second material each has a first singlet state and a first triplet state. The first triplet state of the second material is not lower than the first triplet state of the first material. The second material transfers excitons to the first material and the excitons that transition to the first triplet state of the first material can be activated to the first singlet state of the first material through a thermal activation process.

Abstract: Provided are novel silane derived compounds. Also provided are OLEDs and related consumer products that contain these novel silane derived compounds. Further provided are formulations comprising these novel silane derived compounds.

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: A compound of Formula I is disclosed. In the structure of Formula I, ring A and ring B are 5- or 6-membered rings; L1, L2, L3, and Z are each linking groups; a, b, and c are each 0 or 1, and a+b+c=2 or 3; K1, K2, K3, and K4 are each a direct bond, O, or S; Z1 to Z6 and X1 to X5 are each C or N; W is a linking group comprising 3 to 5 linking atoms, which can be further substituted; M is Pd or Pt; each RA, RB, RC, RD, RE, R, and R? is selected from H or a variety of substituents, and can be joined to another substituent for form a ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.