Abstract:
A silsesquioxane-based compound represented by Formula 1 and an organic light-emitting device including the same: wherein R1, R2, R3, R4, R5, R6, R7, and R8 are as defined in the specification. The use of the silsesquioxane-based compound enables to produce an organic light-emitting device with improvement in electrical characteristics such as brightness and efficiency. The silsesquioxane-based compound can exhibit good film smoothness and adhesion, and at the same time, good electrical characteristics such as current efficiency and brightness, and thus, is suitable for use in an organic light-emitting device.
Abstract:
An organic light-emitting device includes a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode. The organic layer includes at least a light-emitting layer, wherein the light-emitting layer includes a plurality of compounds which have individually a light-emitting repeating unit and at least one of a hole-transporting repeating unit and an electron-transporting repeating unit and which are different in the molar ratio of the light-emitting repeating unit and at least one of the hole-transporting repeating unit and the electron-transporting repeating unit, and wherein the plurality of the compounds are stacked so that the molar ratio of the hole-transporting repeating unit may decrease and/or the molar ratio of the electron-transporting repeating unit may increase in the direction from the first electrode toward the second electrode. The hole transport capability of the light-emitting layer decreases in the direction from the first electrode toward the second electrode and the electron transport capability of the light-emitting layer decreases in the direction from the second electrode to the first electrode. Therefore, hole transport and electron transport are equilibrated, thereby ensuring high efficiency and long lifetime.
Abstract:
A donor film has a soft polymer film and a transfer layer to be transferred which is formed on the soft polymer film. When fabricating a patterned organic electroluminescent device using the donor film for thin film transfer, the transfer layer is transferred even with a small amount of energy due to good adhesion between the transfer layer of the donor film and an acceptor film, and multiple layers, such as organic small molecular and polymer layers in addition to a metal layer, may be simultaneously transferred, while eliminating a need of a photothermal conversion layer.
Abstract:
An organic light emitting device that includes a cathode, an anode and an organic layer arranged between the cathode and the anode, wherein the cathode includes at least one metal layer and at least one inorganic electrode layer alternately arranged, the cathode includes at least three layers. The organic light emitting device has excellent luminous efficiency, luminance, color coordinate characteristic, power efficiency and an increased lifetime while preventing the cathode electrode from diffusing into the organic emitting layer.
Abstract:
An organic electroluminescent device has an anode formed on a substrate, a hole injection layer formed on the anode, wherein the hole injection layer is subjected with an electron shower treatment, an emitting layer formed on the hole injection layer, and a cathode formed on the emitting layer. With the electron shower treatment, impurities from the hole injection layer can be removed, and electrical surface resistance of the hole injection layer cab be increased so that performance and life characteristics of the organic electroluminescent device are improved.
Abstract:
A stacked trench capacitor including a first trench formed in a semiconductor substrate, an insulating material, preferably BPSG, substantially filling the first trench to thereby define an isolation region of the substrate, a second trench formed in the first trench, the second trench being much narrower and shallower than the first trench, a storage electrode formed on the sidewalls and bottom surface of the second trench, a thin dielectric film formed on the storage electrode, and a plate electrode formed on the thin dielectric film. In a preferred embodiment, the isolation region serves to separate and electrically isolate adjacent memory cells of a semiconductor memory device, each of the memory cells including a MOSFET transistor and a stacked trench capacitor constructed as described above. An impurity region is formed in the substrate adjacent an outer sidewall of the second trench to a depth preferably substantially equal to that of the second trench, the conductivity type of the impurity region being opposite that of the substrate. An upper portion of the impurity region preferably serves as the source region of the MOSFET transistor of the memory cell.
Abstract:
Provided is a method of forming a micropattern according to an aspect of the present invention. The method of forming a micropattern may include forming an organic wire or organic-inorganic hybrid wire mask pattern having a circular or elliptical cross section on a substrate, forming a material layer on an entire surface of the substrate having the organic wire or organic-inorganic hybrid wire mask pattern formed thereon, and removing the organic wire or organic-inorganic hybrid wire mask pattern from the substrate to allow only the material layer on a portion of the substrate having no organic wire or organic-inorganic hybrid wire mask pattern formed thereon to be remained.
Abstract:
A dendritic molecule represented by Formula 3: where Pc is metal phthalocyanine represented by Formula 2: where M is a core metal of the dendritic molecule; n is an integer in the range of 1 to 50; each of the Xs is a bivalent linking group independently selected from the group consisting of O, S, CH2, CO, SO2 and NHCO; and each of the Rs is independently selected from the group consisting of CN, COOH, SO3H and PO3H. The dendritic molecule containing metal phthalocyanine is dissolved in an organic solvent, and thus can be used to easily form a hole injection layer or a hole transport layer using solution deposition. The hole injection layer comprising the dendritic molecule containing metal phthalocyanine has good adhesion to an electrode and improved hole injection ability. The organic light emitting diode including the hole injection layer exhibits high luminance and emitting efficiency.
Abstract:
A conductive polymer compound includes: a conductive polymer; a first repeating unit represented by the following Chemical Formula 1; a second repeating unit represented by the following Chemical Formula 2; and a third repeating unit represented by the following Chemical Formula 3 and/or Chemical Formula 4,
Abstract:
An organic light emitting device and a method of manufacturing the same, the organic light emitting device includes a first electrode, a second electrode, and an organic layer that has at least a multi-coated emissive layer and which is interposed between the first and second electrodes. The multi-coated emissive layer is a single layer composed of a neutral emissive material and an no−ne parameter of the emissive layer is greater than an no−ne parameter of a single-coated layer. The organic light emitting device has a longer lifetime and high efficiency.