Abstract: Provided are a cyclopentaphenanthrene-based compound and an organic EL device using the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, a light-emitting layer in an organic EL device, and as an organic dye or an electronic material such as a nonlinear optical material.

Abstract: A polymer and an organic light-emitting device including the same, wherein the polymer has a polymeric unit represented by Formula 1 below:

Abstract: An organic light emitting device includes a first electrode, a second electrode, an organic emission layer between the first electrode and the second electrode, and an auxiliary electrode in a hole which penetrates the second electrode and the organic emission layer, and exposes the first electrode.

Abstract: Provided is an organic electroluminescent device including an organic layer interposed between a pair of electrodes, the organic layer including a layer formed of a titanium oxide derivative or a mixture layer containing a titanium oxide derivative. The organic electroluminescent device has higher luminescent efficiency, a longer lifetime and a lower operating voltage than a conventional organic electroluminescent device, and can be easily manufactured.

Abstract: A polymer and an organic light-emitting device including the polymer.

Abstract: A polymer including a first repeating unit represented by Formula 1: and an organic light-emitting device including the polymer.

Abstract: Provided are an electroluminescent polymer including repeating units of Formula (1) below and repeating units of Formula (2) below and an organic electroluminescent device including an organic layer having the electroluminescent polymer, wherein the organic electroluminescent device has high luminance, high efficiency, and high color purity: where Ar, X, Y, and R are the same as described in the detailed description of the invention and the claims.

Abstract: Provided are a high-efficiency phosphorescent multinuclear copper complex and an organic electroluminescent device using the complex. The multinuclear copper complex can be used to form an organic layer of an organic electroluminescent device, and the organic electroluminescent device using the complex can emit light in the yellow to red wavelength region of 560 nm to 630 nm as a high-efficiency photoluminescent material, and provides a high brightness and a low turn-on voltage.

Abstract: Provided are a cyclopentaphenanthrene-based compound and an organic EL device using the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, a light-emitting layer in an organic EL device, and as an organic dye or an electronic material such as a nonlinear optical material.

Abstract: A cross-linkable polymer including 1,1?-binaphthyl repeating units linked through 6,6?-arylene groups, a cross-linked material comprising the cross-linkable polymer, an organic light emitting device including the cross-linked material, and a method of preparing the organic light emitting device are each disclosed.

Abstract: A polymer and an organic light-emitting device including the polymer are provided, wherein the polymer comprises a polymeric unit represented by the Formula: In which variables are as defined herein.

Abstract: A polymer and an organic light-emitting device including the same, wherein the polymer has a polymeric unit represented by Formula 1 below:

Abstract: Provided are a blue electroluminescent (EL) polymer, a method of manufacturing the same, and an organic EL device including the polymer as a light emitting component, wherein an acridine derivative which can transport holes is introduced into a polymer backbone. The polymer is represented by Formula 1: The blue EL polymer has high color purity and color stability.

Abstract: An organic light emitting device (OLED) includes a polymeric fluorescent light emitting material doped with a phosphorescent dopant to form a fluorescent light emitting layer. The fluorescent light emitting layer may inhibit or prevent device degradation without affecting light emission from the light emitting layer, and may improve the service life of the OLED.

Abstract: A fluoro group-containing compound, a fluoro group-containing polymer, an organic light emitting device including the polymer, and a method of manufacturing the organic light emitting device are provided.

Abstract: Provided are a polymer compound which has a pyrrole derivative compound and a phenoxazine derivative compound as a repeating unit, and an organic electroluminescent (EL) device using the same for forming a hole injection layer and/or a hole transport layer. The polymer compound according to the present invention has superior electric features and a high hole-transporting capability. Thus the organic EL device using the polymer compound for forming a hole injection layer and/or a hole transport layer has superior features such as low voltage and high efficiency compared to using conventional materials.

Abstract: Provided are a cyclopentaphenanthrene-based compound and an organic EL device using the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, a light-emitting layer in an organic EL device, and as an organic dye or an electronic material such as a nonlinear optical material.

Abstract: Provided are an organic light-emitting compound of Formula 1 and an organic light-emitting device using the organic light-emitting compound: where Ar, R1, R2, R3, R4, and R5 are the same as defined in the detailed description. The organic light-emitting device manufactured using the organic light-emitting compound has a low turn-on voltage and high efficiency and color purity.

Abstract: A cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, an emitting layer, in an organoelectroluminescent device, and as an organic dye or an electronic material such as a nonlinear optical material.

Abstract: Provided is a white organic electroluminescent (EL) device including multiple polymer light emitting layers. a white organic electroluminescent device includes a first polymer light-emitting layer and a second polymer light-emitting layer, both of which are formed between a first electrode and a second electrode. A highest occupied molecular orbital (HOMO) energy level of the first polymer light-emitting layer is in the range 5.0 eV through 5.4 eV, and a HOMO energy level of the second polymer light-emitting layer is higher than the HOMO energy level of the first polymer light-emitting layer. Colors emitted from both of the first and second polymer light-emitting layers are combined to produce a white color.