Abstract: A method of making an OLED device includes providing an anode and a spaced cathode, and a hole-transporting layer provided between the anode and cathode, such hole-transporting layer including a first hole-transporting material having a first glass transition temperature Tg1. The method further includes providing a first light-emitting layer including as a main component, a second hole-transporting material having a second glass transition temperature Tg2, such light-emitting layer disposed between the hole transporting layer and the cathode and in contact with the hole-transporting layer, and wherein Tg1 is greater than Tg2.

Abstract: An improved OLED structure that enhances both stability and luminance efficiency, includes a substrate; an anode and a cathode; a light-emitting layer disposed between the anode and cathode; and a hole-transporting structure disposed between the light-emitting layer and the anode including two or more sublayers; a first sublayer in contact with the light-emitting layer and including a first hole-transporting material and a first stabilizing dopant, and a second sublayer including a second hole-transporting material and a second stabilizing dopant, and a third dopant having a bandgap that is smaller than each of the bandgaps of the second hole-transporting material and the second stabilizing dopant, respectively.

Abstract: A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector of at least two layers disposed between adjacent electroluminescent units, wherein the intermediate connector includes an organic alkali metal complex layer and an organic electron-accepting layer, the organic electron-accepting layer being disposed closer to the cathode than the organic alkali metal complex layer, and there is present metallic aluminum in the organic alkali metal complex layer.

Abstract: A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the n-doped organic layer includes an alkali metal and an organic alkali metal complex.

Abstract: An OLED device comprises a cathode, an electron-transporting layer (ETL), a light-emitting layer (LEL) containing a fluorescent light-emitting material, a hole-transporting layer (HTL), and an anode, in that order, wherein the ETL comprises a mixture of compounds, including a first compound and at least one second compound, and wherein there is present a hole blocking layer (HBL) adjacent to the LEL on the cathode side. It provides a reduced drive voltage with comparable color hue. The first compound is present in an amount of 50% to 90% by volume and is represented by Formula (2): Wherein R1 and R4 represent the substituent and neither are hydrogen; R2 and R3 represent hydrogen; Ar1 and Ar4 represent the same aromatic group; and Ar2 and Ar3 represent the same aromatic group.

Abstract: A tandem OLED display for producing broadband light having at least two spaced electrodes includes two or more broadband light-emitting units disposed between the electrodes, at least two of which produce light having different emission spectra and wherein at least one of such broadband light-emitting units does not produce white light, and an intermediate connector disposed between adjacent light-emitting units.

Abstract: A tandem white OLED includes an anode; a cathode; at least one broadband electroluminescent unit disposed between the anode and the cathode, wherein the broadband electroluminescent unit includes at least one light-emitting layer and produces at least one color component having an intensity less than desired; at least one color-compensating electroluminescent unit disposed between the anode and the cathode, wherein the color-compensating electroluminescent unit is selected to produce the at least one color component and to increase the color component intensity; and an intermediate connector disposed between each adjacent electroluminescent unit, wherein the intermediate connector has no direct connection to an external power source.

Abstract: An organic light emitting diode (OLED) device having a cathode, a light emitting layer and an anode, in that order, and having located between the cathode and the light emitting layer, (a) a first electron transport layer comprising (i) more than 50 vol % of a salt or complex of an alkali or alkaline earth metal and (ii) a carbocyclic fused ring aromatic compound; and (b) a second electron transport layer, different from the first electron transport layer, in contact with the first electron transport layer on the cathode side and comprising a compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus. The device provides reduced drive voltage and good luminance with improved T90 lifetime.

Abstract: An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and (i) a first layer, located between the cathode and the light emitting layer, containing (a) more than 50 vol % of an organic salt or complex of an alkali or alkaline earth metal and (b) a carbocyclic fused ring aromatic compound, that is less than 15 nm thick; and (ii) a second layer, located between the first layer and the cathode, containing a codeposited phenanthroline derivative, metal oxinoid complex, and alkali or alkaline earth metal.

Abstract: An organic white light-emitting device, including a substrate; an anode and a cathode spaced from each other; a light-emitting layer including a yellow dopant for emitting yellow light; and first and second blue light-emitting layers, each blue light-emitting layer having at least one different material than the other blue light-emitting layer.

Abstract: An organic electroluminescent device comprises a cathode, an anode, and has therebetween a light-emitting layer comprising an emissive component represented by formula (I): wherein: Ar1, each Ar2, and Ar3 through Ar7 are independently selected aryl or heteroaryl groups, which may contain additional fused rings and provided that two aryl or heteroaryl rings may be joined; n is 1, 2 or 3. The device exhibits good luminous yield with desirable color coordinates, particularly in the blue or blue-green region.

Abstract: The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.

Abstract: A tandem OLED device having spaced electrodes includes broadband light-emitting units disposed between the electrodes that produce different emission spectra and each light-emitting unit produces light that has multiple spaced peak spectral components, and an intermediate connector disposed between each of the light-emitting units. The device also includes an array of at least three different color filters associated with the device which receives light from the broadband light-emitting units, the band pass of each of the color filters being selected to produce different colored light, wherein the full width at about half maximum of at least one of such spaced peak spectral components produced by each emitting unit is within the band pass of a color filter, and wherein each of the at least three different color filters receives at least one spaced peak spectral component having a full width at about half maximum that is within its band pass.

Abstract: An OLED device comprises a cathode, an anode, and has therebetween: (a) a light emitting layer containing a non-light-emitting fluoranthene compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus; and (b) comprising still further an additional layer, containing an organic alkali metal compound, located between the cathode and the electron transporting layer. OLED devices of the invention provide reduced drive voltage and improved color, and provide embodiments with other improved features such as operational stability and high luminance.

Abstract: The invention provides an OLED device comprising a cathode, an anode, and having therebetween a light emitting layer and an electron transporting layer, (a) the light emitting layer containing a host and up to 50 volume % of a light-emitting fluoranthene compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus; and (b) the electron transporting layer being located between the cathode and the light-emitting layer containing an organic alkali metal compound. Devices of the invention provide reduced drive voltage of OLED devices, and provide embodiments with other improved features such as operational stability and luminance.

Abstract: The invention provides an OLED device comprising a cathode, an anode, and having there between a light-emitting layer, further comprising, between the cathode and the light emitting layer, a non-luminescent electron transporting layer containing a compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus and an organic alkali metal salt, wherein the % volume of the organic alkali metal salt in the electron-transporting is in the range of greater than 70% but less than or equal to 90%. Devices of the invention provide improvements in T90 and T95 lifetimes.

Abstract: An inverted OLED device, comprising: a substrate; a cathode disposed on the substrate; an anode spaced from the cathode; at least one light-emitting layer disposed between the anode and the cathode; a hole-transporting layer disposed between the anode and the light-emitting layer(s); an electron-transporting layer disposed between the cathode and the light-emitting layer(s); a first electron-accepting layer disposed between the hole-transporting layer and the anode and including a first electron-deficient organic material constituting more than 50% by volume of the first electron-accepting layer and having a reduction potential greater than ?0.5 V vs. a Saturated Calomel Electrode; and a second electron-accepting layer disposed between the electron-transporting layer and the cathode including a second electron-deficient organic material constituting more than 50% by volume of the second electron-accepting layer and having a reduction potential greater than ?0.5 V vs. a Saturated Calomel Electrode.

Abstract: An OLED device comprises a cathode, an anode, a light emitting layer, and on the cathode side of said emitting layer, a further layer, wherein the further layer is an electron-transporting layer containing: a) a first compound that has the lowest LUMO value of the compounds in the layer, the amount being greater than 40% by volume and less than 100% by volume of the layer; and b) at least one second compound that is a low voltage electron transport material, exhibiting a higher LUMO value than the first compound, the total amount of said compound(s) being less than 60% by volume and more than 0% by volume of the layer.

Abstract: White light-emitting OLED device having an anode and a cathode, comprising: a first light-emitting layer provided over the anode and containing a first host material and a first light-emitting material, wherein the first host material is a mixture of one or more mono-anthracene derivatives and one or more aromatic amine derivatives, wherein the mono-anthracene derivative(s) being provided in a volume fraction range of greater than 50% and less than or equal to 95% relative to the total layer volume, and the aromatic amine derivative(s) being provided in a volume fraction range of 1% to 40% relative to the total layer volume, and wherein the first light-emitting material has a peak emission in the yellow to red portion of the spectrum; a second light-emitting layer provided over or under the first light-emitting layer, wherein the second light-emitting layer has a peak emission in the blue to cyan portion of the spectrum.

Abstract: An OLED device having two spaced electrodes, and including a first light-emitting layer that produces green emission and includes an anthracene host and a 2,6-diaminoanthracene light-emitting dopant, and a second light-emitting layer that produces red emission and includes a host and a red light-emitting dopant.