The present disclosure provides an organic compound, an electron transport material, and an application thereof. The organic compound has a structure as shown in Formula I. Design of molecular structure and substituents enables it to undergo tridentate coordination or tetradentate coordination with metal, and more stably and firmly combination with metal, so that it has stronger stability and longer working life when used as an electron transport material, which effectively solves a problem of rising drift voltage. The organic compound has greater rigid distortion, which can suppress an increase of intermolecular attraction and prevent it from forming a planar structure to cause excessive intermolecular attraction. The organic compound is used as an electron transport material, and can be applied to an electron transport layer and/or an electron injection layer of an OLED device, which can effectively improve luminous efficiency and working life of the device, and reduce turn-on voltage.

Disclosed are a heterocyclic compound represented by Formula 1 and an organic light emitting device using the same. The heterocyclic compound is used as a material for hole injection layer, hole transport layer, hole injection and transport layer, light emission layer, electron transport layer, or electron injection layer of the organic light emitting device and provides improved efficiency, low driving voltage, and improved lifetime characteristic. ##STR00001##

An electroluminescent device comprising a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode and including at least two light emitting particles, a hole transport layer disposed between the first electrode and the emission layer, and an electron transport layer disposed between the emission layer and the second electrode, wherein the electron transport layer comprises an inorganic layer disposed on the emission layer, the inorganic layer comprising a plurality of inorganic nanoparticles; and an organic layer directly disposed on at least a portion of the inorganic layer on a side opposite the emission layer, wherein a work function of the organic layer is greater than a work function of the inorganic layer.

Provided is an organic light emitting device, comprising: an anode; a cathode disposed opposite to the anode; and one or more organic material layers disposed between the anode and cathode, the organic material layer including a light emitting layer that includes a compound of Chemical Formula 1 and a compound Chemical Formula 2: ##STR00001## wherein: one of R.sub.21, R.sub.22, R.sub.23, and R.sub.24 is -L.sub.21-Ar.sub.1, and the remaining are hydrogen; and one of R.sub.31, R.sub.32, R.sub.33, and R.sub.34 is -L.sub.22-Ar.sub.2, and the remaining are hydrogen; excluding compounds where: R.sub.21 is -L.sub.21-Ar.sub.1 and R.sub.31 is -L.sub.22-Ar.sub.2, R.sub.22 is -L.sub.21-Ar.sub.1 and R.sub.32 is -L.sub.22-Ar.sub.2, R.sub.23 is -L.sub.21-Ar.sub.1 and R.sub.33 is -L.sub.22-Ar.sub.2, or R.sub.24 is -L.sub.21-Ar.sub.1 and R.sub.34 is -L.sub.22Ar.sub.2; L.sub.21 and L.sub.22 each is a single bond, or a substituted or unsubstituted C.sub.6-60 arylene; X.sub.2 is O or S; and Ar.sub.1 is Chemical Formula 3: ##STR00002##

The present invention relates to compounds, which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds.

An organic EL device is provided, including at least an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode in this order, wherein the hole transport layer contains an arylamine compound represented by the following formula (1), wherein Ar.sub.1 to Ar.sub.8 and n1 are defined in the specification, and the electron transport layer contains a compound having a benzoazole ring structure represented by the following formula (2), wherein Ar.sub.9, Ar.sub.10, X, Y.sub.1, Z.sub.1 and Z.sub.2 are defined in the specification. ##STR00001## ##STR00002##

An opto-electronic device includes: (1) a substrate including a first region and a second region; and (2) a conductive coating covering the second region of the substrate. The first region of the substrate is exposed from the conductive coating, and an edge the conductive coating adjacent to the first region of the substrate has a contact angle that is greater than about 20 degrees.

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 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.

A heterocyclic compound represented by Chemical Formula 1 and an organic light emitting device including the same, and the heterocyclic compound which is used as a material of an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage and improved lifetime characteristics of the organic light emitting device.

##STR00001##