600 results about "Organic electroluminescence" patented technology

Disclosed are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a polycyclic compound with a structure of formula 1, which can be used as a TADF material in an organic electroluminescent device. The polycyclic compound has a regulating effect on the emission color, can realize desired green light emission, has deeper HOMO and LUMO energy levels, has the potential to become an excellent light-emitting material, and has a very broad industrial application prospect. Also disclosed are an organic electroluminescent device comprising the compound and a compound composition comprising the compound.

The present invention relates to specific deuterated spirocarbazole-triazine derivatives, mixtures and formulations comprising the same, and to electronic devices comprising these compounds, in particular organic electroluminescent devices comprising these compounds as matrix material, electron transport material or hole blocking material.

The application discloses an organic electroluminescent material, an organic electroluminescent device and a display device, and the organic electroluminescent material comprises an organic compound shown in formula 1, the organic compound comprises an azole derivative structural unit and a phenanthro (hetero) aryl structural unit, the organic compound can be used as a host material of the organic electroluminescent device, can effectively reduce a driving voltage of the organic electroluminescent device, and can improve the efficiency and the service life of the light-emitting device and the comprehensive performance of the light-emitting device.

The application provides a triarylamine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials.The application mainly solves the problems that the performance of most hole transport materials is not ideal, the organic electroluminescent device has low luminous efficiency and short service life and the like.The triarylamine derivative shown in formula 1 connects a group containing C, Si and Ge elements through 1, 4 positions, improves the transport efficiency of carriers, thereby obtaining high hole transport efficiency, is applied to a hole transport layer, can improve the luminous efficiency of the device, and can improve the service life of the device, thereby enhancing the durability of the device.The triarylamine derivative and the organic electroluminescent device thereof can be widely applied to the field of information display technology, such as mobile phones, tablet computers, televisions, wearable devices, VR, vehicle displays and tail lights and the like.

This invention relates to the field of display technology, specifically to an organic electroluminescent compound and its applications. An organic electroluminescent compound has the structure shown in formula (1). Based on the structure of formula (1), further limiting the types of substituents can improve the structural stability of the compound. Furthermore, the HOMO and LUMO energy levels of the organic electroluminescent compound have a high degree of matching with adjacent energy levels, resulting in a more balanced carrier mobility. Consequently, organic electroluminescent devices containing this organic electroluminescent compound exhibit lower driving voltage, higher luminous efficiency, and longer lifetime.

The present application relates to the field of organic electroluminescent material technology, and in particular, to an organic compound, an organic electroluminescent device comprising same, and an electronic apparatus. The compound of the present application comprises a polycyclic conjugated core structure. When used as the host material of a light-emitting layer, the compound of the present application can improve the carrier balance in the light-emitting layer, widen the carrier recombination region, improve the exciton generation and utilization efficiency, and increase the light-emitting efficiency and service life of the device.

The present invention provides a polycyclic aromatic compound represented by formula (1), an organic electroluminescent element, a display device, and a lighting device: wherein the definition of formula (1) is the same as described in the embodiment.

An increase in voltage of a light-emitting device manufactured through a step of forming an aluminum oxide film in contact with an organic compound layer is inhibited. An organic compound film is formed over a first electrode. An organic mask film containing an organic compound which has low solubility to water or a chemical solution including water as a solvent is formed over the organic compound film. An inorganic mask layer is formed over the organic mask film. Shapes of the organic mask film and the organic compound film are processed with the use of the inorganic mask layer, whereby an organic mask layer and an organic compound layer are formed. At least parts of the inorganic mask layer and the organic mask layer are removed with the use of water or a liquid including water as a solvent.

The application discloses a host material, an organic electroluminescent material containing double hosts and application thereof, and relates to the field of organic electroluminescent materials. The structure of the host material is shown in general formula 1: the first host material with a triazine skeleton is connected with two benzene mother nuclei at different positions of a naphthalene ring, and the rigid planar structure brings high glass transition temperature and thermal decomposition temperature. One benzene is fixed at an ortho position of the triazine ring, and a dibenzofuran is used as a main host group at another position of the triazine ring, which can efficiently transport electrons, balance electrons and holes, realize a wider exciton recombination region and higher exciton utilization, and effectively reduce the driving voltage and efficiency roll-off. Meanwhile, the second host with a triarylamine structure is matched, which can simultaneously enhance the hole transport and electron transport capacity, so that when the holes are injected into the p-type host and the electrons are injected into the n-type host, the driving voltage is reduced, and the luminous efficiency and the service life are also significantly enhanced.

The present invention relates to an organic electroluminescent device comprising a hole injection layer and a display device comprising said organic electroluminescent device.

The present application aims at preventing deterioration inside an organic EL element, greatly improving light extraction efficiency, and providing a compound that absorbs light of wavelengths of 400 nm to 410 nm of sunlight without affecting materials inside the element, and has a high refractive index in the range of wavelengths of 450 nm to 750 nm. The present application is an amine compound that has a high refractive index and a specific benzoxazole ring structure. In an organic EL element having, in at least this order, an anode electrode, a hole transporting layer, a light emitting layer, an electron transporting layer, a cathode electrode, and a cover layer, the cover layer preferably contains the amine compound of the present application that has a specific benzoxazole ring structure.

This invention provides a luminescent material composition and an organic electroluminescent device comprising the luminescent material composition. The luminescent material composition provided by this invention includes a first host material and a second host material, wherein the first host material has a structure represented by formula H-L-E, wherein H has the structure shown in formula (I), E has the structure shown in formula (II), and L is selected from the group consisting of arylene groups having 6-30 carbon atoms or heteroarylene groups having 3-30 carbon atoms; the second luminescent material has a structure as shown in formula (III). Organic electroluminescent devices prepared using this luminescent material composition as the host material of the luminescent layer exhibit higher luminous efficiency and / or longer lifetime characteristics.

This disclosure relates to an organic electroluminescent device comprising: a first electrode; a second electrode opposite to the first electrode; a light-emitting layer between the first electrode and the second electrode; and a hole transport band between the first electrode and the light-emitting layer, wherein the hole transport band comprises a compound represented by Formula 1, and the light-emitting layer comprises compounds represented by Formulas 2 and 3. By using compounds represented by Formulas 1, 2, and 3, the organic electroluminescent device according to this disclosure can exhibit high current efficiency.

The application belongs to the technical field of organic electroluminescent materials, and discloses a phosphorescent doping material and an organic electroluminescent device containing the same. n The parent nucleus of the main ligand in the phosphorescent doping material is an aza-phenanthrene ring and a naphthalene ring substituted at a specific position, and the compound in the general formula of the application has a large oscillator strength S m excitation energy level. After absorbing external energy, the molecule can be efficiently excited, and before relaxing to the S1 energy level, the energy is transferred to the surrounding T n state through intersystem crossing, thereby fully supplying the triplet state, and finally participating in the luminescence process through the "borrowing effect" of S m and T , thereby obtaining more excellent luminescent efficiency characteristics. In addition, the device prepared from the compound in the general formula of the application has excellent overall performance, a lower driving voltage, and a longer device life.

The present application relates to the technical field of display, in particular to an organic compound and application thereof. The organic compound provided by the present application is connected with arylamine containing a benzoxazole structure by limiting the structure of the parent nucleus of formula (1), and the overall compound shows high stability and high hole transport performance by matching different substituent groups, the matching degree of HOMO and LUMO energy levels and adjacent energy levels is high, and then the carrier mobility of the organic compound with the specific structure is more balanced, so that the organic electroluminescent device containing the organic compound has low driving voltage, high luminous efficiency and long service life.

The present invention relates to the field of organic electroluminescent material preparation technology, and particularly, to a fluorenocarbazole tetradentate platinum(II) complex, an organic light-emitting diode material, a device, and an apparatus. By means of introducing a fluorene ring system at the 3,4-position of carbazole and introducing a substituent at the ortho-position of the benzene ring at the upper left, a novel tetradentate platinum(II) complex-based blue phosphorescent material is obtained. The proportion of components of the localized state (3LE) is increased in the excited triplet state of the cyclic tetradentate platinum(II) complex, thereby achieving a low shoulder peak, improved emission color purity of material molecules, and enhanced stability of materials. The provided materials all have good chemical stability and thermal stability, thereby facilitating the preparation of evaporation-type OLED devices. The organic electroluminescent device manufactured using the above-described compound as the light-emitting layer has a significant improvement in both the blue light index (BI) and service life, and can also reduce the turn-on voltage.

This invention provides a carbazole compound, an organic electroluminescent device, and a display device, relating to the field of organic optoelectronic display technology. Through structural design of the carbazole compound, this invention yields a carbazole compound with excellent performance. The organic electroluminescent device prepared using this compound as the host material for the light-emitting layer exhibits low driving voltage and high current efficiency.

Light-emitting component (100), comprising: • a first electrode (104); • an organic electroluminescent layer structure (106) on or above the first electrode (104); • a second translucent electrode (112) on or above the organic electroluminescent layer structure (106); • a mirror layer structure (116) on or above the second electrode (112), wherein the mirror layer structure (116) has a lateral thermal conductivity of at least 1 * 10 -3 exhibits W / K; and • an optically translucent layer structure (114) between the second translucent electrode (112) and the mirror layer structure (116), wherein • the optically translucent layer structure (114) and the mirror layer structure (116) together form a cavity that is optically coupled to a microcavity of the light-emitting component (100).

The present invention provides an organic electroluminescence device (1) having a light-emitting region (5) disposed between a cathode (3) and an anode (3), a first anode-side organic layer (61), a second anode-side organic layer (62), and a third anode-side organic layer (63), wherein the light-emitting region (5) includes at least one light-emitting layer (50), the second anode-side organic layer includes at least one compound different from the compound contained in the third anode-side organic layer, the film thickness of the third anode-side organic layer (63) is 20 nm or more, and the difference NM2-NM3 between the refractive index NM2 of the constituent material included in the second anode-side organic layer (62) and the refractive index NM3 of the constituent material included in the third anode-side organic layer (63) satisfies the relationship of the following formula (Equation N1). NM2 - NM3 ≥ 0.05 … (Mathematical formula N1)

The application relates to the technical field of organic light-emitting display, and discloses a cyano-substituted aryl ring-connected triazine compound and application thereof. The cyano-substituted aryl ring-connected triazine compound has a structure as shown in formula (I), the compound provided by the application has high bond energy between atoms, good thermal stability, is conducive to solid-state stacking between molecules, is conducive to injection and migration of excitons, can effectively reduce the driving voltage of an organic electroluminescent device when used as an electron transport material, improves the light-emitting efficiency of the organic electroluminescent device, and prolongs the service life of the organic electroluminescent device. Meanwhile, the cyano substitution can adjust the energy level of the compound, the HOMO and LUMO energy levels are deepened, the compound is more matched with adjacent layers, and the device voltage is reduced. The application further provides an organic electroluminescent device and a display device containing the compound of formula (I).

Provided are organometallic compounds comprising as a central metal atom a platinum or palladium atom which is coordinated by a tetradentate ligand comprising at least two 5-10-membered rings which are coordinated to the central metal atom. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

The present invention relates to an electronic device comprising at least at least two subpixels, where the subpixels comprise a common hole-transport layer c-HTL and different electron-blocking layers EBL1 and EBL2, where the interface charge density ICD at the interface of c-HTL / EBL1 and c-HTL / EBL2, fulfils specific criteria.

The invention provides a carbazole compound, an intermediate, an intermediate compound and an organic electroluminescent device. The carbazole compound with excellent performance is prepared by designing the structure of the carbazole compound, and the organic electroluminescent device prepared by taking the carbazole compound as a luminescent layer main body material has relatively high current efficiency, relatively long service life and relatively low driving voltage.

This invention belongs to the field of organic electroluminescence technology, specifically relating to a luminescent crystal material, its preparation method and application, and laser-prefabricated luminescent devices. The preparation method of the luminescent crystal material includes the following steps: a first reaction is carried out with an amino-containing spirodifluorene monomer, a halogenated nitrogen heterocyclic compound, and a fluorinated organic acid to obtain a first intermediate; the first intermediate undergoes a second reaction with a gallium halide to obtain a second intermediate; a third reaction is carried out with a carbazole derivative, a naphthenic acid derivative, a luminescent bandgap modulating organic compound, and the second intermediate to obtain a third intermediate; the third intermediate is dissolved in an organic solvent for a fourth reaction, followed by multi-directional condensation separation; the material is collected in a pre-designed receiving dish in a 90-110°C condensation zone, and then subjected to a fourth post-processing to obtain the luminescent crystal material. The prepared luminescent crystal material exhibits high quantum efficiency, excellent thermal stability, and achieves balanced red, green, and blue performance.

Disclosed are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a compound having a structure of Formula 1, which can be used as a host material in an organic electroluminescent device. The novel compounds can provide better device performance, such as higher current efficiency, higher external quantum efficiency, and especially longer device lifetime. Also disclosed are an organic electroluminescent device, a compound composition, and an electronic device comprising the compound.