Abstract: A quantum rod includes a nanoparticle, and at least one ligand linked to the surface of the nanoparticle and represented by Formula 1. R1-(L1)b1-(A1)a1-(L2)b2-(A2)a2-(L3)b3-T1.??Formula 1 A light-emitting device, an optical member, and an apparatus, each includes the quantum rod.

Abstract: Provided are a heterocyclic compound which emits blue light and is represented by General Formula (G1) below, and a light-emitting element, a light-emitting device, an electronic device and a lighting device which are formed using the heterocyclic compound represented by General Formula (G1) below. The use of the heterocyclic compound represented by General Formula (G1) makes it possible to provide a light-emitting element which has high emission efficiency, and also a light-emitting device, an electronic device and a lighting device which have reduced power consumption.

Abstract: The present disclosure relates to an organic light emitting diode including an emitting material layer that has a host and two different delayed fluorescent materials whose energy levels are controlled and an organic light emitting device including the diode. Exciton energy is transferred from a first delayed fluorescent dopant to a second delayed fluorescent dopant, which has singlet and triplet energy levels lower than singlet and triplet energy levels of the first delayed fluorescent dopant and a narrow FWHM (full-width at half maximum) compared to the first delayed fluorescent dopant so that efficient light emission can be realized.

Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

Abstract: A polycyclic aromatic compound represented by general formula (1) described below and having a bulky substituent in a molecule is used as a material for an organic device, whereby, for example, an organic EL device excellent in quantum efficiency can be provided. In particular, concentration quenching can be suppressed even if a use concentration is comparatively high, and therefore the present art is advantageous in a device production process. In formula (1) described above, R1, R3, R4 to R7, R8 to R11 and R12 to R15 are independently hydrogen, aryl or the like, X1 is —O— or >N—R (R is aryl or the like), Z1 and Z2 are a bulky substituent such as aryl, and at least one hydrogen in the compound represented by formula (1) may be replaced by halogen or deuterium.

Abstract: The present disclosure relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising the host materials according to the present disclosure, an organic electroluminescent device having a high power efficiency and/or long lifespan can be provided.

Abstract: An organic light-emitting device and an apparatus including the same are disclosed. The organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode. The organic layer includes an emission layer, the emission layer includes a first compound, a second compound, a third compound, and a fourth compound, the first compound is represented by Formula 1, the second compound is represented by Formula 2A or Formula 2B, the third compound is represented by Formula 3, the fourth compound is represented by any one of Formulae 4-1 to 4-3, each as respectively described in the detailed description.

Abstract: An amine compound which improves emission efficiency and an organic electroluminescence device including the same are provided. The amine compound is represented by the structure below, wherein X is O or S, Y is C or Si, each of Ar1 and Ar2 is independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 50 carbon atoms for forming a ring, which includes O or S as a heteroatom, and each of L1 and L2 is independently a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroarylene group having 2 to 30 carbon atoms for forming a ring. R1 through R5 are defined in the description.

Abstract: Provided is a compound represented by formula 1, and a display panel and a display apparatus including the compound. In formula 1, L1 and L2 are each independently selected from the group consisting of a single bond, C6-C30 aryl, and C4-C30 heteroaryl; a and b are each independently selected from 0, 1, 2, 3, or 4; D1 and D2 are each independently a nitrogen-containing electron donor unit selected from the group consisting of carbazolyl and derivative groups thereof, acridinyl and derivative groups thereof, diarylamino and derivative groups thereof, and triarylamino and derivative groups thereof; and c and d are each independently selected from 0, 1, 2, 3, or 4, and c+d?1.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound: M(L1)n1(L2)n2??Formula 1 wherein, in Formula 1, M, L1, L2, n1 and n2 may each be understood by referring to the descriptions thereof provided herein.

Abstract: A light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a LUMO level of greater than or equal to ?3.5 eV and less than or equal to ?2.5 eV, and the second compound is an organic compound having a pyrimidine skeleton. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a diazine skeleton, and the second compound is an organic compound having a pyrimidine skeleton.

Abstract: The present invention relates to a composition comprising a bipolar host and an electron-transporting host, especially for use as matrix material in electronic devices, especially organic electroluminescent devices, and especially in an organic light-emitting diode (OLED). The invention further relates to electronic devices comprising said composition.

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

Abstract: A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m?2.

Abstract: To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the host material is higher than a LUMO level of the host material, and a HOMO level of the guest material is lower than a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. The difference between a singlet excitation energy level and a triplet excitation energy level of the host material is greater than 0 eV and less than or equal to 0.2 eV. The energy difference between the LUMO level and the HOMO level of the host material is larger than or equal to light emission energy of the guest material.

Abstract: The present invention relates to fluorene derivatives and to electronic devices in which these compounds are used as matrix material in the emitting layer and/or as hole-transport material and/or as electron-blocking or exciton-blocking material and/or as electron-transport material.

Abstract: Provided are an organometallic compound, an organic light-emitting device including the organometallic compound, and an organic light-emitting apparatus including the organic light-emitting device. The organometallic compound has the structure M(L1)n1(L2)n2, wherein M is a transition metal, L1 is a ligand represented by the following structure: wherein n1 is 1, 2, or 3, and when n1 is two or more, two or more L1(s) are identical to or different from each other, L2 is an organic ligand, and n2 is 0, 1, or 2, and when n2 is two or more, two or more L2(s) are identical to or different from each other. The sum of n1 and n2 is 2 or 3. More details about Formula 2 is provided in the disclosure.

Abstract: An opto-electronic device includes a substrate, a first electrode disposed over the substrate, a semiconducting layer disposed over the first electrode, a second electrode disposed over the semiconducting layer, the second electrode having a first portion and a second portion, a nucleation inhibition coating disposed over the first portion of the second electrode; and a conductive coating disposed over the second portion of the second electrode, wherein the nucleation inhibition coating is a compound of Formula (I).

Abstract: Provided are a novel aromatic amine derivative having a specific structure and an organic electroluminescence device in which an organic thin layer comprising a single layer or plural layers including a light emitting layer is interposed between a cathode and an anode, wherein at least one layer of the above organic thin layer contains the aromatic amine derivative described above in the form of a single component or a mixed component. Thus, the organic electroluminescence device is less liable to be crystallized in molecules, improved in a yield in producing the organic electroluminescence device and extended in a lifetime.

Abstract: Transition metal compounds having naphthalene imide moiety having enhanced electron withdrawing property and more metal-ligand charge transfer (MLCT) based excited state are disclosed. The disclosed compounds will improve the photoluminescent quantum yield (PLQY) and produce phosphorescent emission in red to near IR region which has many desired applications.