A carbazole derivative is provided. The carbazole derivative is shown in formula (9):

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The present disclosure relates to an emitting compound and organic light emitting device including the same, more specifically, relates to an emitting compound of following and an organic light emitting diode and an organic light emitting device each including the emitting compound.

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The present invention relates to an organic light-emitting diode exhibiting high efficiency and longevity. The organic light-emitting diode comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer contains at least one of the amine compounds represented by Chemical Formula A or Chemical Formula B and at least one of the compounds represented by Chemical Formulas H1 to H7, Chemical Formulas A, B, and H1 to H7 being the same as in the specification.

The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices

The present application relates to a polycyclic compound including nitrogen and an organic light emitting device including the same.

An object of the present invention is to provide an organic semiconductor composition, which makes it possible to obtain an organic semiconductor film having high mobility and being excellent in film uniformity and heat resistance, and a method for manufacturing an organic semiconductor element.

The organic semiconductor composition of the present invention contains an organic semiconductor as Component A and an organic solvent, which is represented by Formula B-1 and has a melting point of equal to or lower than 25° C. and a boiling point of equal to or higher than 150° C. and equal to or lower than 280° C., as Component B, in which an ionization potential of Component A is equal to or higher than 5.1 eV. In the formula, X represents O, S, S═O, O═S═O, or NR, Y.sub.1 to Y.sub.4 each independently represent NR.sub.1 or CR.sub.10R.sub.11, R, R.sub.1, R.sub.10, and R.sub.11 each independently represent a hydrogen atom or a substituent, and n represents 1 or 2.

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The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides high efficiency and a long lifespan.

The present invention relates to a compound for an organic optoelectronic element, represented by chemical formula I, an organic optoelectronic element employing the same, and a display device. The details of chemical formula I above are defined as in the specification.

Provided is a new organic electroluminescent device. This new organic electroluminescent device comprises multiple light-emitting units, a second organic layer and a specific connection layer. This new organic electroluminescent device controls LUMO.sub.first organic material - work function.sub.metal to be ≤ 2.1 eV, which can promote a separation of electrons at metal and organic interfaces, suppressing a recombination of carriers at the interfaces. HOMO.sub.second organic material -LUMO.sub.first organic material is controlled to be ≥ 0.3 V, and a hole injection is controlled through an adjustment of a doping concentration of a first organic material, which can balance a recombination of the carriers on a light-emitting layer, significantly improving efficiency and a lifetime of the device and reducing power consumption of the device. This new tandem organic electroluminescent device has more excellent device performance and broader application prospects.

A pyrene-triazine compound, a mixture containing same, a formulation, an organic electronic component, and applications. The pyrene-triazine compound comprises a triazine structure of three strong electron affinity nitrogen atoms and a pyrene fused ring structure. Because the triazine structure has great optoelectronic performance and a planar structured pyrene derivative has great carrier transport performance and optoelectronic performance, the application of the pyrene-triazine compound in the organic electronic component produces a light-emitting component having high efficiency and an extended service life.