Abstract: A novel and improved material for an organic electroluminescent device includes at least one monoamine compound represented by any one of the following Formulae I to III: In Formulae I to III, Ar is a substituted or unsubstituted aryl group having 6 to 50 carbon atoms for forming a ring. The organic electroluminescent device including the material may have improved emission life.

Abstract: A novel and improved material for an organic electroluminescent device includes at least one monoamine compound represented by any one of the following Formulae I to III: In Formulae I to III, Ar is a substituted or unsubstituted aryl group having 6 to 50 carbon atoms for forming a ring. The organic electroluminescent device including the material may have improved emission life.

Abstract: Provided are a polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an exemplary embodiment of the present disclosure is represented by the following formula 1. In Formula 1, X is O, SiR?R?, S, or BAr1. At least one of R1 to R8 is an aryl amine-containing electron donor. When X is O, SiR?R?, or S, the aryl amine-containing electron donor further includes a Si.

Abstract: A material for an organic electroluminescent device having high emission efficiency and long life, and an organic electroluminescent device including the same. The material for an organic electroluminescent device may be represented by Formula (1).

Abstract: A duct of the present invention includes a pair of groove-shaped members which are formed of sound absorbing sheets and a pair of flange portions which are formed of parts of the pair of groove-shaped members that are extended outward from groove opening edges and which are joined in an overlaid state on each other when the pair of groove-shaped members are arranged such that groove openings are opposed to each other. The pair of flange portions includes a seal portion which is formed by crimping the sound absorbing sheets in parts of the flange portions along the groove opening edges and an outer thick portion which is extended outward from the seal portion and which is formed of the sound absorbing sheet thicker than the sound absorbing sheet of the seal portion.

Abstract: Provided are an aromatic compound enhancing emission efficiency of blue light emitting region and an organic electroluminescence device including the same. The aromatic compound according to an embodiment of the inventive concept is represented by Formula 1, and more details about the constituents are provided in the disclosure.

Abstract: Provided are a polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an exemplary embodiment of the present disclosure is represented by the following formula 1. In Formula 1, X is O, SiR?R?, S, or BAr1. At least one of R1 to R8 is an aryl amine-containing electron donor. When X is O, SiR?R?, or S, the aryl amine-containing electron donor further includes a Si.

Abstract: A polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an example embodiment is represented by the following Formula 1. wherein in Formula 1, Cy1 is carbonyl-containing five- or six-membered and substituted or unsubstituted cyclic hydrocarbon or substituted or unsubstituted heterocycle, and R1 to R4 are each independently a hydrogen atom or a group represented by the following Formula 2 or 3.

Abstract: A nitrogen-containing compound and an organic electroluminescence device including the same, the nitrogen-containing compound being represented by the following Formula 1:

Abstract: An organic electroluminescent device including an anode, a cathode, and a plurality of organic layers between the anode and the cathode, wherein at least one layer selected from the organic layers includes a material for an organic EL device, represented by Formula 1: In Formula 1, when position 9 (e.g., the N atom) in a carbazolyl group is combined via L (linker) with a nitrogen atom of an amine group, and at least one selected from position 1 and 8 in the carbazolyl group is substituted with an aryl group, a heteroaryl group, an alkyl group, or a silyl group, the molecule may be non-planar, the volume of the molecule may increase, and the HOMO-LUMO energy gap may increase, thereby increasing or improving the emission efficiency of the organic EL device.

Abstract: A duct of the present invention includes a pair of groove-shaped members which are formed of sound absorbing sheets and a pair of flange portions which are formed of parts of the pair of groove-shaped members that are extended outward from groove opening edges and which are joined in an overlaid state on each other when the pair of groove-shaped members are arranged such that groove openings are opposed to each other. The pair of flange portions includes a seal portion which is formed by crimping the sound absorbing sheets in parts of the flange portions along the groove opening edges and an outer thick portion which is extended outward from the seal portion and which is formed of the sound absorbing sheet thicker than the sound absorbing sheet of the seal portion.

Abstract: A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 5.

Abstract: A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 1.

Abstract: An organic electroluminescent device may include an anode; an emission layer on the anode; and at least one layer between the anode and the emission layer, wherein the emission layer or the at least one layer includes an amine derivative represented by Formula 1. The organic electroluminescent device using the amine derivative represented by Formula 1 may have improved emission efficiency and emission lifetime.

Abstract: A novel and improved material for an organic electroluminescent device includes at least one monoamine compound represented by any one of the following Formulae I to III: In Formulae I to III, Ar is a substituted or unsubstituted aryl group having 6 to 50 carbon atoms for forming a ring. The organic electroluminescent device including the material may have improved emission life.

Abstract: Provided are a material for an organic electroluminescent device capable of being driven at a low voltage and having high emission efficiency. An organic electroluminescent device includes the same. An embodiment of the material for an organic electroluminescent device according to the present disclosure is represented by Formula 1. The substituents of Formula 1 are as described herein.

Abstract: A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 5.

Abstract: A material for an organic electroluminescent device having high emission efficiency and long life, and an organic electroluminescent device including the same. The material for an organic electroluminescent device may be represented by Formula (1).

Abstract: An organic electroluminescent device includes an anode, an emission layer, a first hole transport layer between the anode and the emission layer, the first hole transport layer including a first hole transport material and an electron accepting material doped into the first hole transport material, and a second hole transport layer between the anode and the emission layer, the second hole transport layer including a second hole transport material represented by Formula 2:

Abstract: An organic electroluminescent device includes an anode, an emission layer, a first hole transport layer between the anode and the emission layer, the first hole transport layer including an electron accepting material, and a second hole transport layer between the anode and the emission layer, the second hole transport layer including a first hole transport material represented by the following Formula 1: