Abstract: Provided are organometallic compounds comprising a first ligand LA which comprises at least two rings which are bridged by a two-atom linker comprising two structures which are independently selected from the group consisting of CR, CRR?, SiRR?, GeRR?, BR, BRR?, N, NR, O, and S. 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 first bidentate ligand LA comprising a structure of Formula I: is provided. In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; moiety C is an cyclic moiety; each of Z1 to Z5 is C or N; K is a direct bond or a linking group; each R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M, which may be coordinated to other ligands. Compositions, OLEDs, and consumer products containing the compound are also provided.

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

Abstract: A compound including a first ligand LA of Formula I, is provided. In Formula I, rings A, B, C, and D are each a 5-membered or 6-membered ring; L1 is selected from CR, SiR, GeR, N, or B; L2 is selected from CRR?, SiRR?, GeRR?, NR, O, S, Se, or C?X; X is CRR?, O, or S; each of Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z8, and Z9 is independently C or N; each R, R?, RA, RB, RC, and RD is independently hydrogen or a General Substituent; LA is coordinated to a metal M through the indicated dashed lines; metal M may be coordinated to other ligands; and any two adjacent R, R?, RA, RB, RC, and RD may be joined or fused to form a ring. Formulations, OLEDs, and consumer products including the compound are also provided.

Abstract: Provided are organometallic compounds which comprise a central metal atom which is coordinated by am at least two-dentate ligand comprising at least two 5-membered to 10-membered carbocyclic or heterocyclic rings which are connected by a direct bond. Also provided are compositions comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

Abstract: Provided is an OLED structure includes an organic layer having a primary phosphorescent emitter and a first host; where one of the following conditions is true: (1) the organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer where the second organic layer includes a secondary emitter. The primary 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; the primary phosphorescent emitter is capable of transferring energy to the secondary emitter; 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; the primary phosphorescent emitter has the formula Pt(L1)m; L1 can represent one or more ligands that are the same or different; each L1 is independently monodentate or multidentate; and m represents a maximum possible number of ligands L1 that can coordinate to Pt.

Abstract: A compound including a tetradentate ligand, LA, is provided. In the compound, LA is coordinated to a metal M selected from Pt, Pd, Cu, Ag, and Au; LA comprises a first moiety and a second moiety that are different form each other and are independently coordinated to the metal M; the first moiety is a heterocyclic carbene, that is coordinated to the metal M through a metal-carbene bond, while the second moiety is a 5-membered heterocycle; and the ligand LA forms at least one M-O or M-S bond. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a compound including a metal complex having a metal M with a coordination number of four with four coordinating atoms, Z1, Z2, Z3, and Z4, coordinated to the metal M. In the compound, each of Z1, Z2, Z3, and Z4 is independently selected from O, S, Se, N, P, C, Si, or B; at least one of Z1, Z2, Z3, or Z4 is S* or Se*, where S* and Se* represent S or Se, respectively, that form a dative bond with M; and the metal M is selected from Pt, Pd, Cu, Ag, Au, or Zn, 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: 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: The present disclosure provides a compound including a first ligand LA of Formula I, In Formula I, ring A is a 7 to 12-membered heterocyclic ring that is fused to ring B, which is a 5-membered or 6-membered heterocyclic ring; ring C is a 5- or 6-membered ring; n is 1 or 2; X is selected from B, N, Al, In, and Ga; each W is selected from NR, O, S, Se, SO, SO2, BR, CRR?, C?CRR?, SiRR?, PRR?, and GeRR?; each of Z1, Z2, and Z3 is independently C or N; at least one of Z1, Z2, and Z3 is N; each R, R?, RA, RB, and RC is hydrogen or general substituent; each of K1 and K2 is a direct bond, O, or S; LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also disclosed.

Abstract: Provided are organic or organometallic compounds comprising a structure comprising at least three 6-membered rings and a 5- or 6-membered ring which are all fused to a central at least 8-membered ring. Also provided are formulations comprising these organic or organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic or organometallic compounds.

Abstract: A compound is provided that has a formula M(LA)m(LB)n, having the structure of Formula II, where LB is a different ligand from LA. In Formula II, M is Ir; m is 1 or 2, and m+n is 3; R is hydrogen, deuterium, alkyl, cycloalkyl, or a combination; each R1 and R2 is independently hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; and LB is selected from a variety of phenyl-imidazole and pyridinyl-dibenzofuran the ligands. OLEDs and consumer products containing the compound are also provided.

Abstract: Provided are compounds comprising a ligand LA of Formula I where the ligand LA is coordinated to Pt.

Abstract: Provided are compounds having a first ligand LA having a structure of Formula I: that are useful in OLED application and provide improved OLED properties.

Abstract: The present disclosure provides a metal coordination complex compound. The metal complex compound is capable of functioning as an emitter in an organic light emitting device (OLED) at room temperature, and has a vertical dipole ratio (VDR) greater than 0.33 in the OLED. Formulations, OLEDs, and consumer products including the same are also provided.

Abstract: Provided are organometallic compounds including a ligand LA of the following Formula I Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

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

Abstract: Provided are compounds comprising a ligand LA of Formula I where the ligand LA is coordinated to Ir.