The present disclosure relates to an organic compound. The structure of the organic compound consists of a structure represented by formula (I) and a structure represented by formula (II); the structure represented by formula (I) is fused with the structure represented by formula (II); and * represents a connection point, in formula (I), capable of being fused with formula (II). When being used to the organic light-emitting layer of an organic electroluminescent device, the organic compound of the present application can effectively improve the device efficiency of the device and prolong the service life of the organic electroluminescent device.

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To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

Provided is a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic device using the same, and an electronic device.

A solar cell device is presented. The solar cell device comprises a layered structure comprising an electron transport layer and a hole transport layer and a heterojunction interface region between the electron transport and hole transport layers configured to define at least one charge generation region forming at least one junction between them, wherein at least one of the electron transport layer and the hole transport layer comprises at least one modulated doping layer at a predetermined distance from said at least one junction, said at least one modulated doping layer thereby inducing variation of an energy band structure at a vicinity of said at least one junction generating electric field applied to charge carriers increasing efficiency of generation and/or collection of the charge carriers.

Provided are a compound for an organic optoelectronic device represented by a combination of Chemical Formula 1 and Chemical Formula 2, a composition for an organic optoelectronic device including the same, an organic optoelectronic device, and a display device. Details for Chemical Formula 1 and Chemical Formula 2 are as defined in the specification.

A light emitting device and a light emitting display including the same. The light emitting device includes an anode and a cathode facing each other, a first stack and a second stack disposed between the anode and the cathode, the first stack including a first electron transport layer comprising a first material represented by Formula 1, a first blue light emitting layer containing a boron-based compound emitting light having a wavelength of 430 nm to 480 nm, and a first electron-blocking layer including a second material including a spirofluorene group, and at least one hydrogen atom on at least one side of the spirofluorene group is substituted by deuterium, and the second stack including at least two phosphorescent light emitting layers emitting light having a longer wavelength than that of the light emitted by the first blue light emitting layer, and a charge generation layer.

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The present invention relates to a light-emitting device and an electronic apparatus including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode and including an emission layer, wherein: the interlayer may further include a hole transport region between the emission layer and the first electrode, the hole transport region may include a first layer and a second layer, the second layer being between the first layer and the emission layer, the first layer may include a first amine-based compound, the second layer may include a second amine-based compound, and the first amine-based compound and the second amine-based compound may be different from each other.

An electroluminescent display device includes a substrate on which a plurality of sub-pixels are defined; a first electrode in each sub-pixel on the substrate; a first hole transporting layer on the first electrode; a second hole transporting layer on the first hole transporting layer; a third hole transporting layer on the second hole transporting layer; a light-emitting material layer on the third hole transporting layer; an electron transporting layer on the light-emitting material layer; and a second electrode on the electron transporting layer, wherein the first hole transporting layer includes a P-type dopant and a first hole transporting material, the second hole transporting layer includes the first hole transporting material, and the third hole transporting layer includes a second hole transporting material, and wherein a total thickness of the first and second hole transporting layers is equal to or greater than a thickness of the third hole transporting layer.

A light emitting element that includes a first compound represented by a specific chemical formula in which an ortho-type or kind penta-phenyl group is bonded to a fused polycyclic compound including at least one boron atom and a heteroatom is provided. The light emitting element has a long-lifetime.

Disclosed is a light emitting device that is capable of reducing lateral leakage current and a driving voltage by improving a structure for connecting a plurality of stacks to one another in a structure using the plurality of stacks, and a light emitting display device including the same. The light emitting device includes a first electrode and a second electrode facing each other, a plurality of stacks provided between the first electrode and the second electrode, and a charge generation layer including an electron generation layer and a hole generation layer stacked between the stacks, wherein the electron generation layer contains a first host of Formula 1 and a metal dopant, and the hole generation layer contains a second host and an organic dopant.