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.

Abstract: Provided are organic compounds comprising a central seven-membered Ge or Si atom comprising ring to which three 6-membered carbocyclic aromatic groups are fused. 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 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: Provided are organic compounds comprising at least two 6-membered aromatic rings which are linked together via a direct bond and additionally via an nitrogen atom so to form a 5-membered nitrogen-containing ring, wherein a silyl or germyl group is attached in o-position of one of the 6-membered aromatic rings. 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 comprising a first ligand LA of Formula I, In Formula I, X1 to X7 are each C or N; K1 is a direct bond or a linker; R1 and R2 are substituents; each R3, R4, R5, R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein; LA is coordinated to a metal M; when R1 is substituted or unsubstituted aryl, specific conditions must be met, and when R1 is alkyl, other conditions must be met. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a composition A that includes: a first dopant; and a first host; where the first dopant has a HOMO energy HOMODopant and a LUMO energy LUMODopant; the first host has a HOMO energy HOMOHost and a LUMO energy LUMOHost; |LUMOHost?HOMODopant|=X1; |LUMODopant?HOMOHost|=X2; the first dopant has an optical bandgap energy, Y; at least one of X1 and X2 is less than or equal to Y+0.026 eV; the composition A has a vertical dipole ratio VDR(A); composition B is a reference composition comprising the first dopant and a second host, wherein the second host is the composition B having a vertical dipole ratio VDR(B); the ratio of the first dopant and the first host in the composition A is identical to the ratio of the first dopant and second host in the composition B; and VDR(A)?VDR(B) is ?0.05.

Abstract: Provided is a compound having a formula of M(LA)(LB)(LC); where LA, LB and LC are each a bidentate ligand and are different from each other; M is selected from the group consisting of Ir, Os, Rh, Ru, Pt, and Pd; two or three of LA, LB and LC are optionally linked together to form a tetradentate or hexadentate ligand; LA has a structure of Formula I: where moieties A and B are each independently a monocyclic ring or a polycyclic fused ring system, where the monocyclic ring or each ring of the polycyclic fused ring system is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring; X1 to X4 are each independently C or N; Z1 and Z2 are each independently C or N; K1 and K2 are each independently a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); Z1 is C if K1 is not a direct bond, Z2 is C if K2 is not a direct bond; L1 is a direct bond or an organic linker; RA and RB each independently represent mono to the maximum allowable substitution, or no substitution; wherein each R?

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety A and moiety B either a monocyclic ring or a polycyclic fused ring system; each of X1 to X4, Z1, and Z2 is C or N; K1 is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); L1 is a direct bond or a linking group; each R?, R?, RA and RB is hydrogen or a General Substituent; and LA is coordinated to a metal M. In addition, RA or RB alone or in combination with a substituent of L1 form a 7-membered ring. Formulations, OLEDs, and consumer products containing the compound are also provided.