Provided is an organic light emitting device having improved driving voltage, efficiency and lifetime, the device comprising: an anode; a cathode; and a light emitting layer therebetween, wherein the light emitting layer comprises a compound of Chemical Formula 1 and a compound of Chemical Formula 2:

##STR00001## wherein: any one of R.sub.1 to R.sub.12 is Chemical Formula 3, and the rest are hydrogen or deuterium:

##STR00002## R.sub.1 is hydrogen, deuterium, or a substituted or unsubstituted C.sub.6-30 aryl or C.sub.2-60 heteroaryl containing one or more of N, O and S; Ar.sub.1, Ar.sub.2, Ar.sub.1, and Ar.sub.2 are each independently a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing one or more of N, O and S; and the other substituents are as defined in the specification.

The present disclosure relates inter alia to an organic cocrystal comprising at least three compounds A, B and C, and the method to prepare the said organic cocrystal, and organic electronic devices comprising the said organic cocrystal, and their application and use.

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.

Disclosed are formulations including an organic compound H, an emitter E, and an organic resin. Also provided are organic functional films containing the formulations. Further provided are organic light-emitting devices containing the formulations.

The present invention relates to compounds which are suitable for use in electronic devices, preferably organic electroluminescent devices.

The present invention relates to novel light-emitting materials. These materials comprise a side chain that includes a fully deuterated or partially deuterated alkyl chain. This new side chain could improve device lifetime compared to nondeuterated side chains.

The present invention generally discloses an organic compound and organic electroluminescence (herein referred to as organic EL) device using the organic compound. More specifically, the present invention relates to an organic EL device employing the organic compound as fluorescent emitting host or phosphorescent emitting host which can display long lifetime, high efficiency.

An organic semiconductor material having a chrysene skeleton by limiting a compound having particular transistor performance. The chrysene compound is represented by the following chemical formula: ##STR00001##
In the chemical formula, R2 and R8 are not the same functional group, and independently includes at least one of a hydrogen atom, a substituted or non-substituted aryl group, a substituted or non-substituted heterocyclic group and a substituted or non-substituted alkyl group.

An electrochromic compound represented by the following formula (1) is provided:

##STR00001## where each of R.sub.1 to R.sub.9 and Ar.sub.1 to Ar.sub.6 independently represents one of a hydrogen atom, a halogen atom, a monovalent organic group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, a group in which two or more aryl and/or heteroaryl groups are condensed with each other to form a ring, and a polymerizable functional group; and at least one of Ar.sub.1 to Ar.sub.6 represents an aryl group, a heteroaryl group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, or a group in which at least two aryl or heteroaryl groups are condensed with each other to form a ring.

Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SP.sup.2 carbon atoms and SP.sup.3 carbon atoms, and having a ratio of the number of the SP.sup.3 carbon atoms to the number of the SP.sup.2 carbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.