Abstract: An OLED is disclosed that includes an enhancement layer having optically active metamaterials, or hyperbolic metamaterials, which transfer radiative energy from the organic emissive material to a non-radiative mode, wherein the enhancement layer is disposed over the organic emissive layer opposite from the first electrode, and is positioned no more than a threshold distance away from the organic emissive layer, wherein the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer, and the threshold distance is where the total non-radiative decay rate constant is equal to the total radiative decay rate constant; and an outcoupling layer disposed over the enhancement layer, wherein the outcoupling layer scatters radiative energy from the enhancement layer to free space.

Abstract: Disclosed is a device that includes an emissive material or region including a host that is doped with a first material as an emitter that is an acceptor and a phosphorescent-capable second material as a sensitizer. The first material and the second material each has a first singlet state and a first triplet state. The first triplet state of the second material is not lower than the first triplet state of the first material. The second material transfers excitons to the first material and the excitons that transition to the first triplet state of the first material can be activated to the first singlet state of the first material through a thermal activation process.

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: The present disclosure provides compound having a first ligand LA, including those comprising a structure of Formula A, In the compound, each of X1P to X6P is C, N, or B, where at least one of X1P to X6P is N or B; at least four substituent pairs selected from (R1, R2), (R2, R3), (R3, R4), (R4, R5), (R5, R6), and (R6, R1) are joined or fused together to form rings fused to the center ring P; each of R1, R2, R3, R4, R5, and R6 is independently a hydrogen or a General Substituents defined herein; LA is coordinated to a metal M to form a 5-membered or 6-membered chelate ring; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing such compounds are also provided.

Abstract: A compound having a first 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; Z1 and Z2 are each C or N; each of Q1 to Q4 is C or N; K1 and K2 are each independently a direct bond or a linking group; two RA substituents are joined to form a structure of Formula II, fused to moiety A, wherein n is 0, 1, 2, or 3; two RB substituents are joined to form a cyclic moiety B1 fused to ring B; and each R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: Novel host compounds consisting of carbazole and nitrile groups are disclosed. These compounds are useful in phosphorescent OLEDs.

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: Novel Iridium complexes having three different bidentate ligands useful for phosphorescent emitters in OLEDs are disclosed. At least one of the three different bidentate ligands is a carbene ligand.

Abstract: A compound having a first ligand LA including a structure of Formula I, where at least one RA or RB includes comprises a structure of Formula II, is provided. In Formulas I and II, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; ring C is a 4- to 10-membered heterocyclic ring; XC is CRC1; X is Si or Ge; each of X1 to X4, Z1, and Z2 is C or N; L is a direct bond or a linker, each of K1, K2, and LK is a direct bond or a linker, each R moiety 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: 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: Devices, arrangements, and techniques are provided to improve the color saturation of displays such as OLED displays while avoiding or substantially reducing any increase in power consumption that typically would be associated with such increase in saturation. A three-subpixel per pixel red/green/blue (RGB) architecture is provided as well as a four sub-pixel approach which uses two red sub-pixels for each pixel (red/red/green/blue, or R1R2GB).

Abstract: A composition comprising a first compound and a second compound, wherein the first compound has a formula selected from the group consisting of and wherein the second compound has the formula is disclosed.

Abstract: A compound comprising Formula I, is provided. In Formula I, M is Pd or Pt; each of X5 to X12, Z1, and Z2 is C or N; Y1, A1, and A2 are C or a heteroatom; if Y1 is O, S, or Se, then A2 and R3 are absent; K, L1, and L2 are a direct bond or a linking group; R1 is a General Substituent defined herein; each R, R?, R?, R?, R2, R3, RA, RB, RC, RD, and RE is hydrogen or a General Substituent defined herein; and (1) one pair of RA, one pair of RB, or one pair of RE substituents join to form a 6-membered ring; or (2) L2 is NR, and R joins with an RE substituent to form a structure of Formula II, Formulations, OLEDs, and consumer products containing the same are also provided.

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: Provided are compounds of formula Ir(L1)x(L2)y(L3)z where L1 has ?L1 forms a 5-membered chelate ring with Ir; and L2 and L3 can be the same or different and have

Abstract: A compound comprising a first ligand LA of Formula I, and a structure of Formula II, are provided. In Formulas I and II, each of moiety A, moiety B, moiety C, and moiety D is a monocyclic or polycyclic fused ring system; ring H is a ring; one or more of moiety A, moiety B, and ring H may be or may comprise one or more of moiety C, moiety D, or ring G; each of X1 and X2 is C or N; Z1 is C, Si, or Ge; each of Z2 to Z5 is C, Si, Ge, N, B, or P; W is O, S, Se, N, B, P, C, Si, In, or Ge; each of K1 and K2 is a direct bond or a linker; and T is a one or two atom linker. Formulations, OLEDs, and consumer products containing the compound are also provided.

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