Abstract: An organic light emitting diode (OLED) architecture in which efficient operation is achieved without requiring a blocking layer by locating the recombination zone close to the hole transport side of the emissive layer. Aryl-based hosts and Ir-based dopants with suitable concentrations result in an efficient phosphorescent OLED structure. Previously, blocking layer utilization in phosphorescent OLED architectures was considered essential to avoid exciton and hole leakage from the emissive layer, and thus keep the recombination zone inside the emissive layer to provide high device efficiency and a pure emission spectrum.

Abstract: Compounds are provided that comprise a ligand having a 5-substituted 2-phenylquinoline. In particular, the 2-phenylquinoline may be substituted with a cycloalkyl containing group at the 5-position. These compounds may be used in organic light emitting devices, in particular as red emitters in the emissive layer of such devices, to provide devices having improved properties.

Abstract: A composition of materials including a first compound having a structure according to Formula I

Abstract: A novel compound selected from is disclosed.

Abstract: Full-color pixel arrangements for use in devices such as OLED displays are provided, in which multiple sub-pixels are configured to emit different colors of light, with each sub-pixel having a different optical path length than some or all of the other sub-pixels within the pixel.

Abstract: Compounds containing indolocarbazole and terphenyl building blocks are disclosed in this application. These compounds are useful for application in organic electroluminescent devices.

Abstract: A compound that has the structure according to Formula M(LA)x(LB)y(LC)z is disclosed. In Formula M(LA)x(LB)y(LC)z, ligand LA is ligand LB is and ligand LC is and OLEDs and formulations containing these compounds are disclosed. In Formula M(LA)x(LB)y(LC)z; M is a metal; x is 1 or 2; X1-X4 and A1-A8 are C or N; at least one of A1-A8 is N; X is O, S, or Se; two adjacent RB form a six-member aromatic ring E fused to ring B; and each RA-RE and R1R4 is independently hydrogen or a substituent.

Abstract: Provided is an OLED comprising: an anode electrode; a cathode electrode; an organic emissive layer, disposed between the anode and the cathode, comprising: a first host material having a HOMO energy EHH; and an emitter material having a HOMO energy EHE; wherein, all materials in the organic emissive layer are mixed together; the emitter is selected from the group consisting of a phosphorescent metal complex, and a delayed fluorescent emitter; and provided that the emitter material is not a Pt complex; EHH is equal or greater than ?5.45 eV; EHE is equal or less than ?5.15 eV; and EHE is greater than EHH.

Abstract: The present invention relates in part to compounds containing indolocarbazole and terphenyl building blocks. These compounds are useful for application in organic electroluminescent devices wherein the combination of indolocarbazoles with terphenyl groups leads to novel compounds that demonstrate superior device performance.

Abstract: A compound comprising a first ligand LA of Formula I, where at least one RA or RB comprises R of Formula II, is provided. In Formula I and II, moieties A and B are independently single rings or multicyclic ring systems; Z1 and Z2 are each C or N; L and L1 are linkers; 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 1, 2, or 3; each R?, R?, R?, R?, R1, R2, RA, RB, and RC is independently hydrogen or a General Substituent; and LA is complexed to a metal M to form a 5-membered or 6-membered chelate ring. Formulations, OLEDs, and consumer products including the compound are also provided.

Abstract: A composition is disclosed that includes a first compound capable of functioning as a host in an emissive layer of an OLED at room temperature; and a second compound that includes a ligand LA of Formula III where ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; where R represents two adjacent substituents that are joined together to form a ring that is fused to ring B, and R has a structure of Formula IV or Formula V disclosed herein.

Abstract: Full-color pixel arrangements for use in devices such as OLED displays are provided, in which multiple sub-pixels are configured to emit different colors of light, with each sub-pixel having a different optical path length than some or all of the other sub-pixels within the pixel.

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

Abstract: A compound useful as a host material in phosphorescent light emitting devices is disclosed.

Abstract: Devices having multiple multicomponent emissive layers are provided, where each multicomponent EML includes at least three components. Each of the components in each EML is a host material or an emitter. The devices have improved color stability and relatively high luminance.

Abstract: A compound containing indolocarbazole having a formula: Formula I is disclosed.

Abstract: A composition is disclosed that includes a first compound capable of functioning as a host in an emissive layer of an OLED at room temperature; and a second compound that includes a ligand LA of Formula III where ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; where R represents two adjacent substituents that are joined together to form a ring that is fused to ring B, and R has a structure of Formula IV or Formula V disclosed herein.

Abstract: A compound having a formula (LA)mIr(LB)3-m having a structure selected from is disclosed. In the structures of formula (LA)mIr(LB)3-m, m is 1 or 2, R1, R2, R3, R4, and R5 are each independently selected from hydrogen, deuterium, C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof, and, R6 is selected from C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof.

Abstract: A method for fabricating an OLED using a mixture that is an evaporation source for a vacuum deposition process includes providing a container that contains the mixture, providing a substrate having a first electrode disposed thereon, depositing an organic layer over the first electrode by evaporating the mixture in the container in a high vacuum deposition tool, and depositing a second electrode over the organic layer.

Abstract: A composition of materials including a first compound having a structure according to Formula I