Abstract: The present invention includes novel organic materials containing indolo[3,2-b]carbazoles and terphenyls. The compounds and materials of the present invention may be useful for PHOLED devices.

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

Abstract: The invention provides a light emitting device, comprising: a first electrode; a second electrode; a light emitting layer disposed between the first electrode and the second electrode, wherein the light emitting layer comprises an emitting material having a first triplet energy level (T1); and an exciton quenching layer disposed between the light emitting layer and the second electrode, wherein the exciton quenching layer comprises a non-emitting quenching material having a second triplet energy level (T1); wherein the exciton quenching layer is disposed adjacent to the light emitting layer; wherein the emitting material emits by phosphorescence or delayed fluorescence; and wherein the first triplet energy level (T1) is higher than the second triplet energy level (T1). Methods of making the same are also provided.

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

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 formed of a mixture of two compounds having similar thermal evaporation properties that are pre-mixed into an evaporation source that can be used to co-evaporate the two compounds into an emission layer in OLEDs via vacuum thermal evaporation process is disclosed.

Abstract: A compound having the formula Ir(LA)n(LB)3?n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein A1, A2, A3, A4, A5, A6, A7, and A8 comprise carbon or nitrogen; wherein at least one of A1, A2, A3, A4, A5, A6, A7, and A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R1 and R2 each independently represent mono-, di-, tri-, tetra-substitution, or no substitution; wherein R? and R? each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R?, R?, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R?, and R?are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl,

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: Novel organic compounds containing triphenylene and triazine moieties are described. These compounds are expected to improve device performance when they are used in organic electroluminescent devices.

Abstract: The present invention discloses novel indolocarbazole containing material which can be used for OLEDs. These materials may serve as hosts, charge transporting and blocking materials and may improve OLED performance.

Abstract: This invention discloses novel indolocathazole and substituted DBX containing host materials which can be used for PHOLEDs.

Abstract: Compounds are provided that comprise a ligand having a 5-substituted 2-phenylquinoline. In particular, the 2-phenylquinoline may be substituted with a bulky alkyl 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 formed of a first mixture of a first compound and a second compound wherein the first compound has different chemical structure than the second compound; the first compound is capable of functioning as a hole transporting material in an organic light emitting device at room temperature; the first compound comprises at least one carbazole group; the first compound has a evaporation temperature T1 of 150 to 350° C.; the second compound has evaporation temperature T2 of 150 to 350° C.; the absolute value of T1?T2 is less than 20° C.; the first compound having a concentration C1 in said first mixture, and the first compound having a concentration C2 in a film formed by evaporating the first mixture in a vacuum deposition tool at a constant pressure between 1×10?6 Torr to 1×10?9 Torr, at a 2 ?/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated; and wherein the absolute value of (C1?C2)/C1 is less than 5%.

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: The invention provides a light emitting device, comprising: a first electrode; a second electrode; a light emitting layer disposed between the first electrode and the second electrode, wherein the light emitting layer comprises an emitting material having a first triplet energy level (T1); and an exciton quenching layer disposed between the light emitting layer and the second electrode, wherein the exciton quenching layer comprises a non-emitting quenching material having a second triplet energy level (T1); wherein the exciton quenching layer is disposed adjacent to the light emitting layer; wherein the emitting material emits by phosphorescence or delayed fluorescence; and wherein the first triplet energy level (T1) is higher than the second triplet energy level (T1). Methods of making the same are also provided.

Abstract: A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.

Abstract: A novel compound based on aza- and diazodibenzofurans; aza- and diaza dibenzothiophenes, such as benzothieno- and benzofuropyrimidines as well as benzothieno- and benzofuropyrazines useful for electron-transporting host material in green, red, yellow, and white phosphorescent emitting devices is disclosed.

Abstract: The invention provides a light emitting device, comprising: a first electrode; a second electrode; a light emitting layer disposed between the first electrode and the second electrode, wherein the light emitting layer comprises an emitting material having a first triplet energy level (T1); and an exciton quenching layer disposed between the light emitting layer and the second electrode, wherein the exciton quenching layer comprises a non-emitting quenching material having a second triplet energy level (T1); wherein the exciton quenching layer is disposed adjacent to the light emitting layer; wherein the emitting material emits by phosphorescence or delayed fluorescence; and wherein the first triplet energy level (T1) is higher than the second triplet energy level (T1). Methods of making the same are also provided.

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: An improved OLED includes an emissive layer disposed between a cathode and an anode where the emissive layer includes a multi-component host material and a phosphorescent emitter material.