Abstract: Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.

Abstract: Provided are organic compounds comprising a boron atom as the central atom which is bonded to three 6-membered aromatic carbocyclic or heterocyclic rings. 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 as a central metal atom a platinum or palladium atom which is coordinated by a tetradentate ligand comprising at least two 5-10-membered rings which are coordinated to the central metal atom. 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: Provided are organometallic compounds comprising as the central metal atom a platinum or palladium atom which is coordinated by a tetradentate ligand comprising at least two 6-membered aromatic rings which are connected via an nitrogen 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: Provided are organometallic compounds comprising a platinum atom as the central metal atom which is coordinated by two bidentate ligands which may be linked to comprise a tetradentate ligand. 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: A compound comprising a structure of Formula I, is provided. In Formula I, each of moiety A and, when present, moiety D is a monocyclic ring or a polycyclic fused ring system; M is Pt or Pd; each of X1 to X10, Z1, and Z2 is C or N; each of L1 and L2 is a direct bond or a linking group; each of K1, K2, and K3 is a direct bond or a linking group; Y2 is a linking group; at least one pair of RC are joined or fused to form a 5-membered or 6-membered aromatic ring, which can be further fused or substituted; each R substituent is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds comprising a platinum atom or a palladium atom as the central metal atom which is coordinated by a tetradentate ligand comprising at least four aromatic 6-membered rings and at least one nitrogen-containing 5-membered ring. 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 a platinum or palladium atom as the central metal atom which is coordinated by a tetradentate ligand comprising at least one imidazole ring which is fused to a 6-membered aromatic ring. 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: Provided are new compositions of matter for host materials in OLEDs by incorporating deuterated moieties in the organic molecules. Also provided are formulations comprising these deuterated compounds. Further provided are OLEDs and related consumer products that utilize these deuterated compounds.

Abstract: The present disclosure provides for an organic electroluminescent device (OLED) including an anode; a cathode; and an emissive layer, disposed between the anode and the cathode. The emissive layer includes a phosphorescent dopant, a first host, and a second host, wherein the first host transports holes, the second host transports electrons, and the first host is fully or partially deuterated. Consumer products that include the OLED are also provided.

Abstract: Provided are compounds having Formula I: wherein rings A, B, C, D, E, and F are each independently a single or fused ring system, consisting of one or more 5-membered or 6-membered carbocyclic or heterocyclic rings; L1, L2, L3, L4, L5, and L6 are each independently optionally present or is selected from the group consisting of O, S, Se, BR, BRR?, NR, C?R, CRR?, SiRR?, P(O)R, and GeRR?; a, b, c, d, e and f are each O for not present or 1 for present; each of R, R?, R1, R2, R3, R4, R5, and R6 is independently a hydrogen or a substituent; and any two of adjacent R, R?, R1, R2, R3, R4, R5, and R6 can be joined or fused to form a ring. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Provided are organoboron compounds. Also provided are formulations comprising these organoboron compounds. Further provided are OLEDs and related consumer products that utilize these organoboron compounds.

Abstract: A compound of formula Ir(LA)n(LB)m(LC)o having a ligand LA of Formula I is provided. In Formula I, moiety A and moiety E are each independently a monocyclic ring or a polycyclic fused ring system, wherein the monocyclic ring or each ring of the polycyclic fused ring system is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring. Moiety A is joined to ring D at X6, X7, or X8 and said X6, X7, or X8 to which moiety A joins is C. In Formula I, when Y is O, S, or CRR?, and moiety E is a 6-membered aromatic ring, then at least one pair of R1 or one pair of R2 are joined to form moiety I, wherein moiety I is a monocyclic ring or a polycyclic fused ring system, wherein the monocyclic ring or each ring of the polycyclic fused ring system is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring. Formulations, OLEDs and consumer products containing the compound are also provided.

Abstract: A compound of Formula I, is provided. In Formula I; ring A is a 5-membered or 6-membered aromatic ring; wherein Y1 is absent or a linking group; each of X1 to X3 is N or CR, and at least one of X1 to X3 is N; each of A1 to A5 is C or N; each R1, R2, R3, and R4 is independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof, and each R, R?, RA, RB, and RC is hydrogen or a General Substituent; and the compound is partially or fully deuterated.

Abstract: Provided are organometallic compounds comprising a central metal atom which is coordinated by an at least two-dentate ligand comprising at least two rings A and B which are connected by a direct bond as well as a further linking group so that a 7-10 membered ring to which rings A and B are fused is formed. 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: A compound having a structure including is provided. In these structures, M is Pt or Pd; each of X1 to X22 is N or CR; each of L1 and, where present, Y, is a direct bond or a linking group; each R substituent is a hydrogen atom or a General Substituent defined herein; RA is hydrogen or a General Substituent defined herein; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the compound are also disclosed.

Abstract: Provided are compounds having the structure of Formula I: wherein rings A, B, and D are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; X1—X9 are each independently C or N; Y1 is selected from the group consisting of a direct bond, O, S, Se, NR, SiRR?, CRR?, and P(O)R; R, R?, RA, RB, RC, and RD each independently represents mono to the maximum allowable substitution, or no substitution; each R, R?, RA, RB, RC, and RD is independently a hydrogen or a substituent; and any two adjacent groups of RA, RB, RC, and RD may be joined or fused to form a ring Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these 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 organometallic compounds of 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 is an organic light emitting device (OLED) comprising: an anode; a cathode; and an emissive region disposed between the anode and the cathode; wherein the emissive region comprises: a compound S1; a compound A1; and a compound H1; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; wherein the compound A1 is an acceptor that is an emitter, and wherein the compound H1 is a host. Also provided are the devices containing an OLED as described herein. Further provided are compositions and methods of deuterating aromatic compounds and for making these OLEDs.