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: Provided are organometallic compounds as both sensitizer and as acceptor. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided are carbazole-based host compounds containing a 9-membered ring represented by Formula I where the variables are defined herein. Also provided are formulations comprising these carbazole-based hosts compounds. Further provided are OLEDs and related consumer products that utilize these carbazole-based hosts compounds.

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: 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: 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 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 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 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.

Abstract: Provided are organic compounds comprising a boron atom which is part of two 6-membered rings which are fused together and to which at least three further 6-membered aromatic rings 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 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 of Formula I that are useful as emitters in OLEDs.

Abstract: A compound of the following Formula I is provided. In Formula I, A is C, B, Si, Ge, or Sn; each of X1 to X22 is independently C or N; Z1 and Z2 are each independently B or N; when A is B, one of X4, X5, X12, and X22 is N, and the remainder are C; when A is C, at least one of Z1 and Z2 is B; each of Y1, Y2, Y3, and Y4 is independently O, S, Se, NR, CRR?, SiRR?, GeRR?, and SnRR?; one of both of Y1 and Y2 are present; one of both of Y3 and Y4 are present; each R, R?, RA, RB, RC, RD, RE, and RF is independently hydrogen or a variety of substituents; and any two adjacent R, R?, RA, RB, RC, RD, RE, and RF can be joined or fused to form a ring. Devices, consumer products, and formulations including the compound are also disclosed.

Abstract: Provided are organic compounds comprising at least two 6-membered aromatic rings which are connected together by a single bond and which are bond to a nitrogen atom of a 5-membered nitrogen-containing ring. 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: Provided are organic compounds comprising a 6-membered aromatic heterocyclic or carbocyclic ring to which at least one silyl or germyl group is attached as well as a 5-membered nitrogen-containing ring. Also provided are formulations comprising these organic compounds. Purther provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic compounds.

Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand comprised of a fused heterocyclic structure containing boron. The disclosed ligands form two bonds to the metal forming a 6-membered chelate and can be further substituted to form tridentate or tetradentate ligands.

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