Abstract: A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.

Abstract: A polymer compound for use in an electroluminescent device may improve the durability (particularly the luminescence lifespan). The polymer compound includes Structural Unit (A) represented by Chemical Formula (1). In Chemical Formula (1), the definition of each substituent is as described in the detailed description.

Abstract: A polymer compound including a repeating unit represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.

Abstract: A copolymer including a structural unit represented by Chemical Formula 1 wherein the copolymer is capable of improving luminous efficiency and durability, particularly, an improvement in luminescence life-span, of an electroluminescence device, particularly a quantum dot electroluminescence device.

Abstract: An arylamine-fluorene alternating copolymer having a structural unit (A) is represented by Chemical Formula (1): wherein Chemical Formula (1) is the same as described in the detailed description.

Abstract: A copolymer having a structural unit represented by Chemical Formula 1 is provided. The copolymer may improve performance, e.g., luminous efficiency, of an electroluminescence device. In Chemical Formula 1, the definition of each substituent is as described in the detailed description.

Abstract: A polymer material includes a segment of an alternating copolymer of a structural unit of a specific structure and has a glass transition temperature of greater than or equal to about 50° C. and less than or equal to about 250° C. The polymer material is capable of improving luminescence life-span of an electroluminescence device, particularly a quantum dot light emitting device.

Abstract: A polymer including a structural unit represented by Chemical Formula 1, an electroluminescence device material including the polymer, an electroluminescence device including the polymer or the electroluminescence device material, and an electronic device including the electroluminescence device are provided: In Chemical Formula 1, the definition of each substituent is the same as described in the specification.

Abstract: As a technology capable of improving the durability of an electroluminescent device, for example, luminescence lifespan, a polymeric compound including a structural unit represented by Chemical Formula 1, or a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2, and an electroluminescent device material or electroluminescent device including the same are provided: In Chemical Formula 1 and Chemical Formula 2, R11 to R14 are not the same as R41 to R44.

Abstract: As a means for providing an electroluminescent device capable of achieving high luminance, high efficiency, and at the same time excellent device life-span, a polymer having an overlap index of greater than or equal to about 0.00001 and less than or equal to about 1.

Abstract: A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.

Abstract: A compound represented by formula (1): wherein Ar1 and Ar2 each represents a group represented by formula (3); and R1 represents a naphthylphenyl group, a biphenylyl group, a terphenylyl group, a biphenylenyl group, a naphthyl group, or a phenylnaphthyl group; R2 represents a hydrogen atom; R5 and R6 are as defined in the description is provided. An electroluminescence device which contains the compound of formula (1) is also provided.

Abstract: A compound represented by formula (1): wherein Ar1 and Ar2 each represents a group represented by formula (3); and R1 represents a naphthylphenyl group, a biphenylyl group, a terphenylyl group, a biphenylenyl group, a naphthyl group, or a phenylnaphthyl group; R2 represents a hydrogen atom; R5 and R6 are as defined in the description is provided. An electroluminescence device which contains the compound of formula (1) is also provided.

Abstract: A compound represented by formula (1): wherein Ar1 represents a group represented by formula (3); Ar2 represents a group selected from a group represented by formula (3) and a substituted fluorenyl group: and R1, R2, R5 and R6 are as defined in the description is provided. An electroluminescence device which contains the compound of formula (1) is also provided.

Abstract: An aromatic amine derivative represented by formula (1): wherein R1, R2, R3, L, Ar1, Ar2, k, m, and n are the same as defined in the specification, is useful as a material for an organic EL device and realizes an organic EL device with a high efficiency and a long lifetime even when driving it at a low voltage.

Abstract: An aromatic amine derivative represented by formula (1): wherein R1, R2, R3, L, Ar1, Ar2, k, m, and n are the same as defined in the specification, is useful as a material for an organic EL device and realizes an organic EL device with a high efficiency and a long lifetime even when driving it at a low voltage.

Abstract: An electroluminescent device with an improved luminous efficiency. The device includes a light emitting layer with an arylamine polymer including a structural unit (A) represented by Chemical Formula (1).

Abstract: Disclosed is a copolymer including a structural unit represented by Chemical Formula 1 capable of improving performance (particularly durability) of an electroluminescent device.

Abstract: A copolymer, including a structural unit represented by Chemical Formula 1, a structural unit represented by Chemical Formula 2, or a combination thereof: wherein R1, R2, R3, X1, X2, and Ar1 are as provided herein.