Abstract: A polycyclic compound and an organic electroluminescence device including the same, the polycyclic compound being represented by Formula 1:

Abstract: A light emitting device includes: a first electrode; a second electrode facing the first electrode; m emission units stacked between the first electrode and the second electrode; and m?1 charge generating layer(s) between the two adjacent emission units from among the m emission units, m?1 charge generating layer(s) including m?1 n-type charge generating layer(s) and m?1 p-type charge generating layer(s), wherein m is an integer of 2 or greater, a maximum emission wavelength of light emitted from at least one of the m emission units differs from that of light emitted from at least one of the other emission units, at least one of the m?1 n-type charge generating layer(s) includes a metal-containing material and an electron transporting metal-non-containing material.

Abstract: A condensed cyclic compound and an organic light-emitting device including the same.

Abstract: The present disclosure provides a nitrogen-containing compound, an electronic element and an electronic device, which belongs to the technical field of organic materials. The nitrogen-containing compound has a structure of Chemical Formula 1, wherein R1 and R2 are each independently selected from hydrogen or a group represented by Chemical Formula 1-1, and one and only one of R1 and R2 has the group of Chemical Formula 1-1; when R1 or R2 is selected from hydrogen, said R1 and R2 may be replaced by R4. The nitrogen-containing compound can improve the performance of electronic elements.

Abstract: An organic electroluminescence device includes an anode, a second organic layer, a first organic layer, and a cathode in this order. The first organic layer contains a first compound and a second compound. The second organic layer contains a third compound. The first compound is a compound represented by a formula (1). The second compound is a delayed fluorescent compound. The third compound is a compound represented by a formula (3). In the formula (1), X is a nitrogen atom or a carbon atom bonded to Y, Y being a hydrogen atom or a substituent. In the formula (3), n is an integer ranging from 1 to 4, XB is a group represented by a formula (3A). In the formula (3A), Ar1 and Ar2 are each independently a monovalent or polyvalent aromatic hydrocarbon group, and Cz is a group represented by a formula (3B-1) or the like.

Abstract: The present invention relates to the compounds of the formulae (1) and (2) and to organic electroluminescent devices, in particular blue-emitting devices, in which these compounds are used as host material or dopant in the emitting layer and/or as hole-transport material and/or as electron-transport material.

Abstract: A light emitting diode according to the present invention comprises: a first electrode; an organic layer provided on the first electrode; a light emitting layer provided on the organic layer; an electron transport layer provided on the light emitting layer; and a second electrode provided on the electron transport layer, wherein the organic layer includes a compound represented by Chemical Formula 1. In Chemical Formula 1, below, Ar1, Ar2, Ar3, L1, L2, L3 and Y are as defined in the present specification.

Abstract: Novel silicon containing compounds for organic electroluminescent devices is disclosed. The compounds can be used as emitters in the emissive layer of the organic electroluminescent device. More specifically, these compounds can emit blue light. The devices incorporating these compounds as emitters show unexpecting higher efficiency and longer lifetime than prior art compounds. Also disclosed is an organic electroluminescent device and a formulation.

Abstract: The invention relates to an Organic light emitting diode comprising an anode electrode, a cathode electrode, at least one emission layer and an organic semiconductor layer, wherein the organic semiconductor layer is arranged between the anode electrode and the cathode electrode and the organic semiconductor layer comprises an alkali organic complex and a compound of formula 1 wherein X is selected from O, S or Se; and R1 and R2 are independently selected from the group consisting of C6 to C18 aryl group and C5 to C18 heteroaryl group, wherein each of R1 and R2 may independently be unsubstituted or substituted with at least one C1 to C12 alkyl group or C1 to C12 alkoxy group, preferably C1 to C4 alkyl group or C1 to C4 alkoxy group; and each R3, R4, R5, and R6 are independently selected from the group consisting of H, C1 to C12 alkyl group or C1 to C12 alkoxy group, preferably H, C1 to C4 alkyl group or C1 to C4 alkoxy group; a method for preparing the same and the compound of Formula 1 comprised therein.

Abstract: An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer. The emission layer includes at least one heterocyclic compound of Formula 1. The heterocyclic compound may be a host or a delayed fluorescent dopant. The organic light-emitting device including the heterocyclic compound may have a low driving voltage, high efficiency, high luminance, and a long lifespan.

Abstract: Provided is an organic light emitting element including: an anode; a cathode; and an organic compound layer formed between the anode and the cathode and including a hole injection layer, a hole transport layer, and an emission layer, in which: the emission layer includes a host and a dopant; the hole transport layer includes a hole transport material having multiple aromatic hydrocarbon skeletons and a single bond for linking the aromatic hydrocarbon skeletons; the hole transport material has a triplet level T1 of 1.8 eV or more; the hole transport material has a hole mobility of 1×10?5 cm2/Vs or more; and the hole transport layer and the emission layer satisfy relationships represented by the following expression (1): |reduction potential of hole transport material|?|reduction potential of host|>0.1 V??(1) and the following expression (2): |HOMO level of hole transport material?HOMO level of host|<0.1 eV??(2).

Abstract: A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; R1 is a substituent; n is 0 or a positive integer; Ar1 independently in each occurrence is an arylene group; R2 is a substituent; R3 is a substituent; R4 is an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.

Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.

Abstract: The present invention is directed to a compound comprising at least one phosphepine ring and having the phosphorous atom of the phosphepine ring substituted with at least one monovalent substituent R, wherein (i) R is selected from aryls and heteroaryls comprising at least two rings or (ii) R is selected from aryls, alkyls, heteroalkyls, heteroaryls, H, F, CI, Br, I, OH, and OR*, wherein R* is selected from C1-C22 alkyl and C7-C22 arylalkyl, and the hosphepine ring is a ring according to formula (I), wherein structural moieties A, B, C are independently selected from ortho-arylenes and ortho-heteroarylenes, with the proviso that neither A nor B is a condensed arylene, and C comprises at least two annelated rings, a semiconducting material comprising this compound as well as an electronic device comprising the semiconducting material.

Abstract: According to an embodiment of the present disclosure, an organic light emitting diode includes: a first electrode; a second electrode overlapping the first electrode; an emission layer positioned between the first electrode and the second electrode; an electron injection layer positioned between the emission layer and the second electrode; and an electron injection delay layer positioned between the emission layer and the electron injection layer, wherein the electron injection layer includes a first material made of a metal and a second material made of a metal halide, and the electron injection delay layer has a thickness of about 20 ? to about 140 ?.

Abstract: The present invention is directed to matrix compounds and an organic light-emitting diode (OLED) comprising an emission layer and an electron transport layer stack of at least two electron transport layers, wherein a first electron transport layer and a second electron transport layer comprises at least one matrix compound, wherein the matrix compound or compounds of the first electron transport layer is/are different to the matrix compound or compounds of the second electron transport layer; and in addition, the first electron transport layer comprises a dopant of a lithium halide and/or lithium organic complex; and the second electron transport layer is free of a dopant; wherein at least one matrix compound of the second electron transport layer having the chemical formula Ia, Ib and/or Ic: (Ia) (Ib) (Ic) wherein Ar=substituted or unsubstituted arylene with 6 to 20 ring-forming carbon atoms; or carbazolylene; ET=substituted or unsubstituted aryl group with 13 to 40 ring-forming carbon atoms; or a substitute

Abstract: The present invention relates to metal amides of general Formula Ia and for their use as hole injection layer (HIL) for an Organic light-emitting diode (OLED), and a method of manufacturing Organic light-emitting diode (OLED) comprising an hole injection layer containing a metal amide of general Formula Ia:

Abstract: The present disclosure relates to compounds of Formula (I) as compounds capable of emitting delayed fluorescence, and uses of these compounds in organic light-emitting diodes.

Abstract: The present application relates to a substituted benzanthracene compound of a formula (I) or (II). The application furthermore relates to an electronic device which comprises the said benzanthracene compound.

Abstract: The present application discloses an organic light-emitting device and a display device. The organic light-emitting device comprises an anode, a cathode, and a blue light emitting layer, a green light emitting layer and a red light emitting layer between the anode and the cathode, and the blue light emitting layer comprises a blue thermally-activated delayed fluorescent material with a mass percent of 60-80%, the green light emitting layer comprises a green phosphorescent material and/or a green thermally-activated delayed fluorescent material, and the red light emitting layer comprises a red phosphorescent material and/or a red thermally-activated delayed fluorescent material.