The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

The triarylamine compound having a specific structure in the present invention is excellent in hole injection/transport ability, stability and durability of thin film. By selecting the triarylamine compound having a specific structure as the material for the hole transport layer, holes injected from the anode side can be efficiently transported. Furthermore, various organic EL devices combining luminescent materials having a specific structure or the like exhibit good device characteristics. The triarylamine compound having a specific structure in the present invention is excellent in hole injection/transport ability, stability and durability of thin film. By selecting the triarylamine compound having a specific structure as the material for the hole transport layer, holes injected from the anode side can be efficiently transported. Furthermore, various organic EL devices combining luminescent materials having a specific structure or the like exhibit good device characteristics.

Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic electroluminescent device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers comprises one or more hosts selected from the indolocarbazole compounds represented by the following general formula (1) and, as a light emitting dopant, a polycyclic aromatic compound represented by the following general formula (2) or a polycyclic aromatic compound having the structure represented by the general formula (2) as a substructure, and wherein in the formulae Z is an indolocarbazole ring-containing group, X.sup.1 is O, N—Ar.sup.3, S, or Se, and Y.sup.1 is B, P, P═O, P═S, Al, Ga, As, Si—R.sup.2 or Ge—R.sup.3.

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Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device comprises one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers contains a first host, a second host, and a light emitting dopant; the first host is a carbazole compound or a bicarbazole compound; the second host is an indolocarbazole compound; and the light emitting dopant is a polycyclic aromatic compound represented by the general formula (4) or a polycyclic aromatic compound having this structure as a partial structure. In the formula, Y.sup.4 is B, P, P═O, P═S, AL, Ga, As, Si—R.sup.4, or Ge—R.sup.41, and X.sup.4 is O, N—Ar.sup.4, S, or Se.

The invention relates to compounds comprising functional substituents in a specific spatial arrangement, devices containing same, and the preparation and use thereof.

Disclosed are an organic alloy for an organic optoelectric device that is an organic alloy of at least two kinds of organic compounds, the at least two kinds of organic compounds includes a first organic compound and a second organic compound, a difference between evaporation temperatures of the first organic compound and the second organic compound is less than or equal to about 20° C. at less than or equal to about 10.sup.−3 torr, and a light emitting wavelength of the organic alloy is different from light emitting wavelengths of the first organic compound, the second organic compound, and a simple mixture of the first organic compound and the second organic compound, and an organic optoelectric device and a display device including the organic alloy.

The present invention relates to soluble organic compounds, to compositions comprising these compounds, to formulations comprising the compounds or compositions, and to electronic devices.

The present invention includes a new series of benzofused heterocyclic ligands for metal complexes. These complexes show promising photophysical performance when incorporated into OLEDs.

The present invention relates to Pt- or Pd-amidine-carbene complexes, to organic light-emitting diodes (OLEDs) comprising at least one such Pt- or Pd-amidine-carbene complex, to light-emitting layers comprising at least one such Pt- or Pd-amidine-carbene complex, a device, for example stationary or mobile visual display units or illumination means, comprising a corresponding OLED, and to the use of the inventive Pt- or Pd-amidine-carbene complexes in OLEDs, for example as emitters, matrix materials, charge transport materials and/or charge blockers.

A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R.sup.1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R.sup.1 where that atom is the farthest away from the metal among the atoms in R.sup.1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R.sup.1, the first distance is longer than the radius r by at least 2.9 Å.