Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.

Abstract: An organic electroluminescent device (OLED) comprising an anode; a cathode; and an emissive layer, disposed between the anode and the cathode is provided. The emissive layer comprises a phosphorescent dopant, a first host, and a second host, where the first host is a hole transporting host, the second host is an electron transporting host, the first host has a HOMO energy??5.45 eV and/or the first host comprises a structure of Formula V: and the phosphorescent dopant has a formula Ir(LA)x(LB)y(LC)z. In formula Ir(LA)x(LB)y(LC)z, ligand LA has a structure of Formula I, where: moiety A is a ring; moiety B is a fused ring structure comprising at least three rings; K is a direct bond or a linker; Z1 and Z2 are C or N; each RA and RB is hydrogen or a General Substituent defined herein. Consumer products containing the OLED are also provided.

Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.

Abstract: Provided is an OLED structure includes an organic layer having a primary phosphorescent emitter and a first host; where one of the following conditions is true: (1) the organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer where the second organic layer includes a secondary emitter. The primary phosphorescent emitter has a peak emission wavelength ?max that is ?600 nm and ?750 nm; the secondary emitter has a peak emission wavelength ?max that is ?750 nm; the primary phosphorescent emitter is capable of transferring energy to the secondary emitter; the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter; the primary phosphorescent emitter has the formula Pt(L1)m; L1 can represent one or more ligands that are the same or different; each L1 is independently monodentate or multidentate; and m represents a maximum possible number of ligands L1 that can coordinate to Pt.

Abstract: A light emitting device comprises a waveguide, a downconverting thin-film stack in optical communication with the waveguide, and an OLED thin-film stack in optical communication with the downconverting thin-film stack. An integrated photonic system comprises the downconverted as described above, wherein the downconverted OLED stack is integrated with a silicon photonic chip or CMOS photonic chip. A method for providing pump light for a silicon photonic integrated circuit comprises providing the integrated photonic as described above, producing light via the OLED thin-film stack; downconverting the produced light via the downconverting thin-film stack, and guiding the downconverted light via the waveguide.

Abstract: A compound of: is disclosed. In Formula III, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L? is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.

Abstract: Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.

Abstract: Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.

Abstract: Provided is an organic light emitting device (OLED) comprising: an anode; a cathode; and an emissive region disposed between the anode and the cathode; wherein the emissive region comprises: a compound S1; a compound A1; a compound S2; and a compound A2; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; and the compound S2 is a sensitizer that transfers energy to the compound A2; wherein each of the compound A1 and A2 is independently an acceptor that is an emitter; wherein the compound S1 can be same or different from the compound S2; wherein the compound A1 can be same or different from the compound A2; and wherein at least one of the following conditions is true: (1) the compound S1 is different from the compound S2; (2) the compound A1 is different from the compound A2. Also provided are related formulations, related premixed co-evaporation sources, related consumer products and related method of making those OLED devices.

Abstract: Provided is a full-color pixel arrangement of a device comprising at least one pixel: wherein the at least one pixel comprises: a first subpixel comprising a first OLED comprising a first emissive region; a second subpixel comprising a second OLED comprising a second emissive region; wherein the first emissive region comprises: a compound S1; a compound A1; and a compound H1; wherein the second emissive region comprises: a compound A2; and a compound H2; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; wherein the compound A1 is an acceptor that is an emitter; wherein the compound H1 is a host, and at least one of the compounds S1 and A1 is doped with the compound H1; wherein the compound A2 is an emitter; wherein the compound H2 is a host, and the compound A2 is doped with the compound H2.

Abstract: Organic electroluminescent devices are provided, including devices having a tandem structure in which two or more plasmonic OLEDs are arranged in a stack. The plasmonic OLEDs may be inverted or non-inverted. A common electrode disposed between the OLEDs or an outer electrode of the device provides the enhancement layer for one or plasmonic OLEDs in the stack.

Abstract: A tandem device is provided that includes a non-inverted OLED arranged in a stack with an inverted OLED. A common electrode is disposed between the inverted OLED and the non-inverted OLED, which may be electrically addressable outside the OLED stack. The device includes one or more OLEDs and one or more inverted OLEDs in any desired arrangement and combination of inverted and non-inverted devices.

Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

Abstract: An OLED structure including a first organic layer disposed between the anode and the cathode is disclosed. The first organic layer includes a primary phosphorescent emitter and a first host, and where one of the following conditions is true: (1) the first organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer disposed between the anode and the cathode, wherein the second organic layer includes a secondary emitter. The phosphorescent emitter has a peak emission wavelength ?max that is ?600 nm and ?750 nm, the secondary emitter has a peak emission wavelength ?max that is ?750 nm, and the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter.

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: 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: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

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: Provided is an OLED structure includes an organic layer having a primary phosphorescent emitter and a first host; where one of the following conditions is true: (1) the organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer where the second organic layer includes a secondary emitter. The primary phosphorescent emitter has a peak emission wavelength ?max that is ?600 nm and ?750 nm; the secondary emitter has a peak emission wavelength ?max that is ?750 nm; the primary phosphorescent emitter is capable of transferring energy to the secondary emitter; the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter; the primary phosphorescent emitter has the formula Pt(L1)m; L1 can represent one or more ligands that are the same or different; each L1 is independently monodentate or multidentate; and m represents a maximum possible number of ligands L1 that can coordinate to Pt.