Abstract: An objective of the invention is to provide, as a material for highly efficient, highly durable organic EL devices, an organic compound having excellent properties, such as excellent electron injection capability and transportability, hole blocking capability, and high stability in a thin-film state, and also to provide a highly efficient, highly durable organic EL device by using this compound. The present invention has been achieved by focusing on the fact that a benzotriazole ring structure, which has electron affinity, contains nitrogen atoms having the ability to coordinate with a metal and also has excellent heat resistance, and by thus designing and chemically synthesizing various compounds having a benzotriazole ring structure and assessing the properties of various organic EL devices using those compounds, thereby finding out that organic EL devices having excellent properties can be achieved by using specifically-structured compounds having a benzotriazole ring structure.

Abstract: It is an object of the present invention to provide an organic EL element including a capping layer constituted by two layers consisting of a first capping layer and a second capping layer that has a refractive index that is higher than that of the first capping layer, in order to improve the light extraction efficiency compared with an organic EL element including a capping layer constituted by a single layer. The present invention provides an organic electroluminescent element at least including an anode, a hole transport layer, a light emitting layer, an electron transport layer, a cathode, and a capping layer arranged in this order, wherein the capping layer has a structure constituted by two layers consisting of a first capping layer and a second capping layer, a refractive index of the second capping layer is higher than a refractive index of the first capping layer throughout a wavelength range from 450 to 650 nm, and the second capping layer contains an arylamine compound having a specific structure.

Abstract: An objective of the invention is to provide an organic EL device that combines various materials of the device and a capping layer composed from a material that absorbs sunlight within the wavelength range of 400 nm to 410 nm to prevent impact on materials inside the organic EL device, has a high light absorption coefficient and a high refractive index to significantly improve light extraction efficiency, has excellent stability, durability and light resistance in a thin film, and has no absorption within the wavelength ranges of blue, green and red, to thereby effectively achieve the characteristics of the various materials of the device. The invention is an arylamine compound having a benzazole structure, and is also an organic EL device including a capping layer containing the arylamine compound and a light-emitting layer containing a host and a phosphorescent dopant.

Abstract: An organic light-emitting element according to the present invention employs a polycyclic aromatic derivative compound in a light-emitting layer inside the element, and further comprises a capping layer. Thus, the organic light-emitting element can be made highly efficient and can be useful for a device selected from among a flat panel display device, a flexible display device, a monochrome or white flat panel lighting device, and a monochrome or white flexible lighting device.

Abstract: [Object] An object of the present invention is to provide, as a material for an organic EL device having high efficiency and a high durability, a material for an organic EL device having excellent injection/transport performance of holes, excellent electron blocking capability, excellent stability in a thin-film state, and an excellent durability, and to further provide an organic EL device having high efficiency, a low drive voltage, and a long lifetime by combining the material and various materials for an organic EL device having excellent injection/transport performance of holes and electrons, excellent electron blocking capability, excellent stability in a thin-film state, and an excellent durability so that the properties of the respective materials can be effectively exhibited.

Abstract: The present invention provides various organic electroluminescent elements using a material for a capping layer and a material for a luminous layer, in which the material for a capping layer uses an arylamine material that exhibit excellent stability and durability in the form of a thin film, especially a specific amine compound having a high refractive index and having a high absorbance within a wavelength range from 400 nm to 410 nm in the absorption spectrum at a concentration of 10?5 mol/L; and in which the material for a luminous layer uses a compound containing a heterocyclic compound that has a specific fused ring structure.

Abstract: An object of the present invention is to provide, as a material for a highly efficient and highly durable organic EL element, an organic compound that has excellent properties, including excellent electron-injecting/transporting capability, hole-blocking capability, and high stability in the form of a thin film. Another object of the present invention is to provide a highly efficient and highly durable organic EL element by using this compound. The present invention focuses on the properties of the benzazole ring, which has affinity for electrons, and specifically focuses on the capability of its nitrogen atom to coordinate to a metal and also on excellent heat resistance. The inventors have thus designed and chemically synthesized various compounds having a benzazole ring structure, and then experimentally produced organic EL elements including the compounds, followed by thoroughly evaluating the characteristics thereof.

Abstract: An object of the present invention is to provide, as a material for a highly efficient and highly durable organic EL element, an organic compound having excellent properties, including excellent electron-injecting/transporting capability, hole-blocking capability, and high stability in the form of a thin film. Another object of the present invention is to provide a highly efficient and highly durable organic EL element by using this compound. The present invention provides a compound having a pyrimidine ring structure that is designed and chemically synthesized with the focus on the properties of the pyrimidine ring, which has affinity for electrons, specifically with the focus on the capability of the nitrogen atoms to coordinate to a metal and excellent heat resistance. Various organic EL elements including the compound were experimentally produced, followed by evaluation of the characteristics of those elements. From the results, it was found that the organic EL elements have favorable characteristics.

Abstract: An object of the present invention is to provide, as a material for a highly efficient and highly durable organic EL element, an organic compound having excellent properties, including excellent electron-injecting/transporting capability, hole-blocking capability, and high stability in the form of a thin film. Another object of the present invention is to provide a highly efficient and highly durable organic EL element by using this compound. The compound having an azabenzoxazole ring structure of the present invention has excellent heat resistance, and good electron-transporting capability. An organic EL element having an electron-transporting layer, a hole-blocking layer, a light-emitting layer, or an electron-injecting layer including the compound had favorable element characteristics.

Abstract: The present invention is an organic EL element in which a material used for a capping layer is a material having a high absorbance as measured at a wavelength of 400 to 410 nm in an absorption spectrum at a concentration of 10?5 mol/L, and the material is selected from an arylamine material which provides excellent stability and durability to a thin film, particularly selected from a diamine compound that has a particular benzazol ring structure having a high refractive index.

Abstract: An object of the present invention is to provide an organic compound that has excellent properties, with excellent hole injection and transport performance, electron blocking capability, and high stability in a thin film state, and furthermore to provide a highly efficient and highly durable organic EL device by using this compound. The present invention relates to a compound having a triarylamine structure and being represented by the structural formula (A-1) below, where A, B, and C may be the same or different, and each represent a group represented by the structural formula (B-1) below, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group, where at least one of A, B, and C is not the group represented by the structural formula (B-1) below. (For the symbols and the like in the formulae, see the descriptions in the specification.

Abstract: A compound including a benzimidazole ring structure, represented by general formula (1). (In formula (1), X1 and X2 may be the same or different and each represent a specific carbon atom or a nitrogen atom, Ar represents a specific group, R1 and R2 may be the same or different and each represent a specific group, and m is an integer of 0-4.

Abstract: [Object] It is an object of the present invention to provide an organic EL device in which various materials for an organic EL device, which is excellent in hole/electron injection/transport performance, electron blocking performance, stability in a thin film state, and durability, are combined as materials for an organic EL device that has high light emission efficiency and high durability so that properties of each of the materials can be effectively expressed, thereby achieving (1) high light emission efficiency and power efficiency, (2) a low light emission start voltage, (3) a low practical driving voltage, and particularly (4) a long lifetime.

Abstract: [Object] It is an object of the present invention to provide, as a material for organic EL device having high efficiency and high durability, an organic compound having excellent characteristics such as excellent electron injection/transport performance, hole blocking performance, and high stability in a film state, and an organic EL device having high efficiency and high durability, which is obtained by using this compound. [Solving Means] A compound having a pyrimidine ring structure, the compound being represented by the following general formula (1). (In the formula, A1 represents a substituted or unsubstituted aromatic heterocyclic group. Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group.

Abstract: A compound has an azaindeno phenanthrene ring structure, the compound being represented by the following general formula (A-1).

Abstract: A method for constructing a wall-like structure, the wall-like structure (100) including a pair of layered structural walls (10a and 10b) that are spaced apart from each other and that have a structure in which strip-shaped cured layers are laid, the method including a first step of forming a pair of strip-shaped cured layers (1) by discharging a curable material from two mutually spaced-apart portions of a self-propelled type material deposition apparatus (2) that is moving, and a second step of forming a new strip-shaped cured layer (1) on each of the pair of strip-shaped cured layers (1) by discharging the curable material onto the pair of strip-shaped cured layers (1) while moving the material deposition apparatus (2) with its wheels respectively abutting against the top of the pair of strip-shaped cured layers (1), wherein the second step is repeated to thereby construct the wall-like structure (100) including the pair of layered structural walls (10a and 10b) each having a structure in which strip-shape

Abstract: An organic electroluminescent device comprising at least two organic layers including a light emitting layer (5) and a delayed fluorescent exciplex layer (7) containing a donor compound and an acceptor compound, between a pair of electrodes (2, 9) is highly efficient in formation of a singlet excited state and enables high light emission efficiency.

Abstract: An organic electroluminescent device comprising at least two organic layers including a light emitting layer (5) and a delayed fluorescent exciplex layer (7) containing a donor compound and an acceptor compound, between a pair of electrodes (2, 9) is highly efficient in formation of a singlet excited state and enables high light emission efficiency.