An organic molecule is disclosed having a structure of Formula I: ##STR00001##
wherein X is O or S; Y is O or S; R.sup.1 is selected from the group consisting of: hydrogen, deuterium, C.sub.1-C.sub.5-alkyl, which is optionally substituted with one or more substituents R.sup.5; C.sub.6-C.sub.60-aryl, which is optionally substituted with one or more substituents R.sup.5; and C.sub.3-C.sub.57-heteroaryl,
which is optionally substituted with one or more substituents R.sup.5.

An organic electroluminescence device (OLED) of an embodiment includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode The emission layer may include a condensed polycyclic compound represented by Formula 1, which is connected to two or three substituents represented by Formula 2, and the OLED may exhibit excellent luminous efficiency: ##STR00001##

An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode, and the emission layer includes a polycyclic compound represented by Formula 1. The organic electroluminescence device may exhibit high luminous efficiency and/or service life characteristics: ##STR00001##

An organic electroluminescence device including: an anode, a cathode, and at least one emitting layer between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, the first host material is a compound having at least one deuterium atom, and the emitting layer contains the first host material in the proportion of 1% by mass or more.

The present disclosure provides an oxygen heterocyclic compound, an application thereof, and an electronic device using the same. The oxygen heterocyclic compound has a structural formula as represented by following formula 1:

##STR00001##

The oxygen heterocyclic compound comprises an aromatic amine portion and an oxygen heterocyclic portion. The aromatic amine portion effectively promotes the hole injection and transport performance. The oxygen heterocyclic portion is conducive to the formation of molten evaporation materials.

Provided is a compound that can improve the luminous efficiency, stability and life span of the element, an organic electronic element using the same, and an electronic device thereof.

A compound represented by the following formulas (1-1) and (1-3), or a compound represented by the following formulas (1-2) and (1-3). At least one of R.sub.1 to R.sub.16 is a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms or the like. In the compound represented by the formulas (1-1) and (1-3), at least one of R.sub.5 to R.sub.7 and R.sub.14 to R.sub.16 is —N(R.sub.36)(R.sub.37), and in the compound represented by the formulas (1-2) and (1-3), at least one of R.sub.2 to R.sub.16 is —N(R.sub.36)(R.sub.37).

##STR00001##

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

A light emitting device includes: a first electrode; a second electrode overlapping the first electrode; m light emitting units between the first electrode and the second electrode; and m-1 charge generating layers between adjacent light emitting units, wherein the charge generating layer includes: an n-type charge generating layer and a p-type charge generating layer; at least one of a plurality of n-type charge generating layers includes a dopant including an alkali metal, and at least one of a plurality of n-type charge generating layers includes a dopant including a lanthanum metal; contents of the alkali metal and the lanthanum metal doped in the n-type charge generating layer are different from each other; and the m is a natural number of greater than or equal to 3.

An organic electroluminescence device of one or more embodiments includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer and a second electrode on the electron transport region, wherein the hole transport region includes a monoamine compound represented by Formula 1, thereby showing high emission efficiency: ##STR00001##