Abstract: Provided are organic compounds having a central structure comprising two aromatic 6-membered rings which are fused together via a 5-membered ring containing an atom selected from O, S, and Se. 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 organometallic compounds comprising a tetradentate ligand which is coordinated to a Pt or a Pd central atom. Also provided are formulations comprising these organometallic compounds comprising a tetradentate ligand. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds comprising a tetradentate ligand.

Abstract: The present disclosure provides a compound having a first ligand LA of Formula I, In Formula I, each of Z1, Z2, and X1 to X4 is C or N; moiety A is a monocyclic ring or a polycyclic fused ring system; moiety C is a monocyclic ring or a polycyclic fused ring system; K is selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); Y is a linking group; each R, R?, R?, R?, R1, R2, and R3 is hydrogen or a General Substituent defined herein; wherein one of the statements as defined herein is true. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: The disclosure provides a compound having a Formula Ir(LA)x(LB)y(Lc)z or Ir(LA?)p(LB)q(Lc)r, wherein: LA has a structure of Formula IA ?LA? comprising a structure of Formula III: ?LB has a structure of Formula IB: ?LC is a bidentate ligand; and a structure of Formula II, ?is fused to at least one of moieties A, B, C, D, or ring H. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: A compound of Formula Ir(LA)x(LB)y(LC)z is provided where x and y are independently 1 or 2; z is 0 or 1; and x+y+z=3; first ligand LA includes a structure of Formula I, ligand LB includes a structure of Formula II: and ligand LC is a bidentate ligand. In the compounds, moiety B is a polycyclic fused ring system comprising at least four rings; each of moiety C and moiety D is a monocyclic ring or a polycyclic fused ring system; each of X1 to X4 and Z1 to Z6 is C or N; L0 is a direct bond or a linking group; YA is a linking group; each substituent 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 provided.

Abstract: Novel metal complexes incorporating boron-containing aromatic compounds useful as a phosphorescent OLED material are disclosed.

Abstract: A compound of Formula Ir(LA)x(LB)(LC)z is provided, where LA comprises a structure of Formula I, and each of LB and LC is a different bidentate ligand. In the compounds of Formula Ir(LA)x(LB)(LC)z, where moiety A is a polycyclic fused ring system comprising at least three rings, including at least one non-benzene ring; moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1, X2, and Z1 is C or N; the Ir—C1 bond is a metal-carbene bond; Y1 is a linker; L1 is a direct bond or a linker; K1 is a direct bond or a linker; and each RA and RB is hydrogen or a general Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a first ligand LA comprising a structure of Formula I, where a structure of Formula II, is fused to at least one of moiety A or moiety B by two or more adjacent ones of X1 to X11. In Formulas I and II, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; each of Z1 to Z4 and X1 to X11 is C or N; each of L, YA, and YB is a direct bond or a linking group; each of K1 and K2 is a direct bond or a linking group; each RA, RB, RC1, RC2, and RC3 is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M, having an atomic mass of at least 40. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a pixel arrangement of a device comprising at least one pixel, wherein the at least one pixel comprises: a first subpixel comprising a first OLED (1) comprising an emissive region ER11 as described herein; a second subpixel comprising a second OLED (2) comprising an emissive region ER21 as described herein. Also provided is an organic light emitting device (OLED) (5) comprising: an anode; an emissive region ER11? and an emissive region ER21? disposed over the anode and separated by a charge generation layer (CGL); and a cathode disposed over the ER11? and ER21? as described herein. The present disclosure further provides a consumer product comprising a pixel arrangement or an OLED (5) as described herein.

Abstract: Provided are organoboron compounds of that are useful as host material in OLEDs. 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 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 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: 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: 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 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 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.