196 results about "Electron transporting material" patented technology

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to an electron transport material, an OLED with the electron transport material and an organic light-emitting device with the electron transport material. According to the electron transport material disclosed by the invention, triazinyl is taken as a framework, phenyl and cyano-substituted biphenyl is taken as a specific substituent group, methyl, adamantyl, phenyl and pyridyl are limited to be matched, and the electron transport material is used as a material for forming an electron transport layer to manufacture an organic electroluminescent device, so that the evaporation process of the device can be smoothly carried out; and the light-emitting efficiency of the organic light-emitting device is effectively improved, and the application prospect is very good.

The invention relates to the technical field of electroluminescence, and discloses a laminated organic light-emitting device and application thereof, and the laminated organic light-emitting device comprises an anode layer, a first light-emitting unit, an electron transport layer, an interface modification layer, a connection layer, a second light-emitting unit and a cathode layer which are sequentially arranged from bottom to top; the electron transport layer comprises a hole blocking layer and an n-type electron transport layer; wherein the n-type electron transport layer is composed of an n-type dopant and an organic electron transport material, has the functions of electron transport, charge separation and injection and regulation and control of the optical microcavity effect of the laminated device, can simplify the electron transport and connection layer structure of the laminated device, and effectively improves the conductivity of the laminated device; according to the laminated organic light-emitting device, the voltage drop of the body is obviously reduced, and the interface electron injection barrier is reduced, so that the laminated organic light-emitting device has the advantages of low driving voltage, high efficiency and long service life, and the effect of adjusting the optical microcavity of the device can be achieved by utilizing the n-type electron transport layer.

The invention relates to an electrophotographic photoreceptor, a process cartridge, and an image forming apparatus. The electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer of a single-layer type disposed on the conductive substrate. The photosensitive layer has an absorption coefficient of 0.008 or less at a wavelength of 1000 nm and contains a binder resin, a charge generating material, an electron transporting material, and a hole transporting material. The charge generating material is at least one selected from a hydroxygallium phthalocyanine pigment and a chlorogallium phthalocyanine pigment and is contained in an amount of 0.9% by weight or more and 1.8% by weight or less relative to the binder resin.

The invention provides a series of organic chiral micromolecule auxiliary functional materials which can be applied to main body materials, electron transport materials or hole transport materials of functional layers in circular polarization organic light-emitting diodes, and belongs to the technical field of organic electroluminescent materials. According to the invention, chiral oxazoline, chiral binaphthyl, chiral spiro, chiral paracyclophane and chiral 1, 2-cyclohexanediamine are used as chiral construction units, and are introduced into main body, electron or hole transport material molecules to construct a series of chiral compounds containing chiral oxazoline, chiral binaphthyl, chiral spiro, chiral paracyclophane and chiral 1, 2-cyclohexanediamine, and the chiral compounds containing chiral oxazoline, chiral binaphthyl, chiral spiro, chiral paracyclophane and chiral 1, 2-cyclohexanediamine are introduced into main body, electron or hole transport material molecules. The organic chiral auxiliary functional material is a main material, an electron transport material or a hole transport material based on 1, 2-cyclohexanediamine, and the preparation of a circular polarization organic light emitting diode device with high luminous efficiency and high luminous asymmetry factor is realized by using the organic chiral auxiliary functional material.

The invention discloses an electron transport material, an electron transport layer and an organic electroluminescent device, and belongs to the technical field of organic electroluminescent materials. The electron transport material is a nitrogen-containing heterocyclic compound, and simultaneously contains a pyridine ring and a pyrimidine ring connected with the pyridine ring. By introducing a power supply group with a steric effect, the nucleophilicity of similar nitrogen atoms on a pyrimidine ring connected with a pyridine ring can be shielded, so that the coordination activation n-doping effect of a target chelated nitrogen atom and an n-type doping agent is enhanced, and the coordination stability in the coordination activation n-doping effect is promoted; by introducing a power-supplying group to modify the nitrogen-containing heterocyclic unit, the electron nucleophilicity of the nitrogen-containing heterocyclic unit is enhanced, so that the electron transport material can form a more stable complex with the n-type dopant, and the conductivity of the electron transport layer of the light-emitting device is improved; therefore, the driving voltage of the organic light-emitting device can be reduced, the efficiency of the device is improved, and the service life is prolonged.

The present invention relates to novel materials and electronic devices, in particular organic electronic devices such as OLEDs (organic light emitting diodes) containing these materials, for example as electron transport materials, hole blocking materials or matrix materials. The invention also relates to mixtures that contain these novel materials.

The present application relates to the technical field of electroluminescent device preparation, in particular to an OLED light-emitting composition and an electroluminescent device comprising the composition. The OLED light-emitting composition comprises an electron transport material and a light-emitting material, the electron transport material combines o-phenanthroline and a xanthene group, and has high electron mobility and a low energy level. A boron-nitrogen compound skeleton structure with multiple benzene rings is introduced into the light-emitting material, the skeleton structure is twisted in a planar configuration, the alkyl substituents contained in the large steric group are adjusted, the π-π mutual attraction caused by the introduction of benzene rings is weakened, the intermolecular force is further weakened, and the adverse effects of concentration quenching on efficiency are weakened. The OLED device prepared by using the composition of the present application has low starting voltage, high light-emitting efficiency and better service life, can meet the requirements of current panel manufacturing enterprises for high-performance materials, and has great commercial value.

The present application aims at providing a material for an organic EL element having excellent hole injection and transport properties, electron blocking ability, stability in a thin film state, and durability, and further, by combining the material with various materials for an organic EL element having excellent hole and electron injection and transport properties, electron blocking ability, stability in a thin film state, and durability so that the characteristics of each material can be effectively exhibited, an organic EL element having high efficiency, low driving voltage, and long life is provided. The arylamine compound having a specific structure in the present application is excellent in hole injection and transport ability, stability, and durability of a thin film, and thus, by selecting the arylamine compound having a specific structure as a material for a hole transport layer, holes injected from the anode side can be efficiently transported. Further, various organic EL elements combined with an electron transport material having a specific structure and the like exhibit good element characteristics.

The present application relates to a kind of organic electron transport material and its preparation method and application, which is with triazine group as center core, pyridine is the conjugated organic small molecule material of outer ring substitution, the synthetic route of the organic small molecule material is simple, low in cost, higher yield, less environmental pollution;With the organic small molecule as electron transport layer, the problem of charge injection imbalance is well solved, especially in quantum dot light emitting diode (QLEDs), greatly improves the QLEDs device performance and stability, which has extremely great significance to the application field of QLEDs.

A light-emitting device with a long lifetime is provided. A light-emitting device with high reliability is provided. The light-emitting device includes a first electrode, a first light-emitting layer, a first layer, a second layer, a third layer, a second light-emitting layer, and a second electrode stacked in this order. The first layer contains a first organic compound and a first substance. The second layer contains a second organic compound. The third layer contains a second substance. The first organic compound is an electron-transport material. The first substance is a metallic salt, a metal oxide, or an organometallic salt. The second organic compound is an electron-transport material. The second substance is an electron-injection material. The second layer has a lower concentration of the first substance than the first layer.

The present disclosure provides an organic electronic material containing a nitrogen heterocycle and a preparation method and use thereof, and relates to the technical field of organic electroluminescence. Nitrogen-containing heterocycles such as pyridine, triazine or pyrimidine are introduced into a main structure of phenanthrene, such that the electronegativity of the material is enhanced, and the electron transport performance and the thermal stability of a compound are improved. The organic electron transport material provided by the present disclosure has a relatively good thermal stability, a high luminous efficiency and a high luminous purity. An organic light-emitting device prepared from the organic electronic material has effects of reducing a driving voltage, improving a luminous efficiency, enabling color purity to be excellent and prolonging a service life.

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).

The application relates to the technical field of organic photoelectric materials, in particular to a heterocyclic compound and an organic electroluminescent device thereof. The application provides a heterocyclic compound which has a higher triplet energy level than a light-emitting substance, proper HOMO and LUMO and good electron migration capacity, can improve the light-emitting efficiency of a device, reduce the driving voltage of the device and prolong the service life of the device, and is a kind of excellent OLED material.

This invention discloses a compound containing a diazabenzene structure and an organic electroluminescent device comprising the same, belonging to the field of semiconductor materials technology. The structure of the compound described in this invention is shown in general formula (I-1) or general formula (I-2). This compound exhibits good stability and electronic tolerance, while also possessing excellent electron injection and electron transport capabilities. When used as an electron transport material in an organic electroluminescent device, the driving voltage of the device is significantly reduced, and the device lifetime is significantly improved, especially the high-temperature lifetime. General Formula (I-1) General Formula (I-2)

This invention belongs to the field of organic light-emitting materials and semiconductor technology, and discloses a platinum-based tetradentate ligand derivative, its preparation method, and an electroluminescent device. The structural formula of the platinum-based tetradentate ligand derivative is shown in General Formula I. The platinum-based tetradentate ligand derivative of the present invention is applied as a guest luminescent material in the light-emitting layer of an OLED device, resulting in an electroluminescent device with a lower startup voltage, improved device luminous efficiency and device life, and emission in the green to blue range. Furthermore, the platinum-based tetradentate ligand derivative of the present invention can also be applied as an electron transport material in the electron transport layer of an OLED device, which can help streamline the device structure. #imgabs0#

The invention relates to a solar cell and a preparation method thereof. The solar cell comprises a transparent conductive layer, a first charge extraction layer, a light absorption layer, a second charge extraction layer and an electrode which are sequentially stacked, in the first charge extraction layer and the second charge extraction layer, one layer is an electron transport layer, and the other layer is a hole transport layer; the electron transport layer comprises an electron transport material; the electron transport material comprises a core layer and a shell layer, and the shell layer coats at least part of the surface of the core layer; the shell layer comprises an n-type self-assembly monomolecular layer material, the n-type self-assembly monomolecular layer material comprises a first group and a second group, the first group comprises at least one of a trifluoromethyl group, a cyano group, a pyridine group and a benzothiadiazole group, and the second group comprises at least one of a phosphonic acid group, a phosphoric acid group and a carboxylic acid group; and the n-type self-assembly monomolecular layer material is anchored on the surface of the core layer through a second group.

Provided is a technique capable of contributing to the improvement in dischargeability of an inkjet ink composition containing a metal-containing nanomaterial and used for forming a layer including a light-emitting element, and to the improvement in dispersibility of the metal-containing nanomaterial in the composition. More specifically, an inkjet ink composition according to an embodiment of the present invention contains: a metal-containing nanomaterial composed of a material selected from the group consisting of a hole injection material, a hole transport material, an electron transport material, and an electrode material; and a dispersion medium containing a glycol-based solvent and a non-glycol-based solvent. Said inkjet ink composition has a bulk modulus of elasticity at 25°C of 2.0 GPa or more and 2.7 GPa or less.

The invention belongs to the technical field of organic electroluminescent materials, and provides an electron transport material for an organic electroluminescent device and a preparation method of the electron transport material. The 9-alkyl-9-cyanogen-substituted aryl (or cyanogen-substituted nitrogen-containing heteroaryl) fluorene group with a substituent group enables the molecular structure to be twisted and the intermolecular interaction force to be weakened, cyanogen and pyridine enable the compound to have the electron-withdrawing property, electron transmission is facilitated, compounding of electrons and holes in a light-emitting layer is enhanced, and the light-emitting efficiency is improved. Aryl bridged triazine and pyrimidine six-membered nitrogen heterocycle are used for further improving the transmission performance of electrons, and as an electron transmission layer material of the organic electroluminescent device, the organic electroluminescent device has the characteristics of low driving voltage, high luminous efficiency and long service life.

This application belongs to the field of display technology and relates to a composite thin film, comprising a first thin film and a second thin film stacked together; the first thin film includes a MOF material and an electron transport material, wherein the conductivity of the MOF material is greater than or equal to 5 × 10⁻³ S / m; the electron affinity of the second thin film is greater than or equal to 4.7 eV. This application also relates to a method for preparing the composite thin film, a light-emitting device, and a display device. The technical solution provided by this application can reduce the electron injection barrier of the thin film and improve the electron injection efficiency.

A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with a favorable lifetime is provided. A light-emitting device with low driving voltage is provided. A light-emitting device with favorable display quality is provided. A light-emitting device that includes an anode, a cathode, and an EL layer positioned between the anode and the cathode, in which the EL layer includes a hole-injection layer, a light-emitting layer, and an electron-transport layer; in which the electron-transport layer contains an electron-transport material and an alkali metal, an alkaline earth metal, a compound of an alkali metal or an alkaline earth metal, or a complex thereof; and in which the resistivity of the hole-injection layer is within a certain range, is provided.

The invention provides a compound containing a phenanthroline structure as well as a preparation method and application thereof. The structure of the compound is shown as a general formula (1) or a general formula (2), the electron accepting capability of the compound containing the phenanthroline structure can be improved when the general formulas R1-R4 are connected with corresponding functional groups, the compound is applied to preparation of an organic light-emitting device, the driving voltage can be effectively reduced, the current efficiency is improved, the working life of the device is prolonged, and the application prospect is wide. Therefore, the requirements of the current OLED manufacturing industry on high-performance electron transport materials are met.

As an electrophotographic photoreceptor including a protective layer (an outermost layer), a photosensitive layer and a conductive support, wherein the protective layer (the outermost layer) comprises a polymer obtained by polymerizing a compound having a chain polymerizable functional group, and the photosensitive layer comprises a hole transport material satisfying the following formula (1) and an electron transport material satisfying the following formula (2):600≤a  (1)400≤b  (2)in the formula (1), a represents a molecular weight of the hole transport material, and in the formula (2), b represents a molecular weight of the electron transport material.

The invention discloses an organic electroluminescent material and a device thereof. The organic electroluminescent material is a compound with a structure represented by a formula 1, the compound can be used as a main body material, an electron transport material or a hole blocking material and the like in an organic electroluminescent device, the comprehensive performance of the device can be greatly improved, for example, the device efficiency is relatively high, and the service life of the device is remarkably prolonged unexpectedly. The invention also discloses an organic electroluminescent device containing the organic electroluminescent material and a compound composition.

The application belongs to the technical field of organic optoelectronic materials and devices, and discloses an organic electroluminescent device, a preparation method thereof and a display device. The device comprises, in sequence, an anode layer, a hole transport layer, a light-emitting layer, a second electron transport layer, a first electron transport layer composed of an n-type dopant and a first electron transport material, and a cathode layer. The electron transport structure has a small electron injection barrier between the second electron transport layer and the first electron transport layer and between the second electron transport layer and the host material. The organic electroluminescent device prepared by the electron transport structure has good voltage stability during the aging process, thereby reducing the power consumption rise of the organic electroluminescent device during the aging process. The small electron injection barrier can reduce the driving voltage of the device, and the organic electroluminescent device has low driving voltage, long service life and stable voltage.

According to the electron transport material provided by the invention, functional groups with strong electron withdrawing capability, such as triazine, pyridine and pyrimidine, are introduced to a parent nucleus, so that the electron mobility of the electron transport material can be effectively improved; the sp3 hybrid carbon at the 9 position of the fluorene ring can maintain the spatial configuration of the compound, the poor film-forming property and the short device life caused by molecular stacking are avoided, the specific functional group of the cyano group is introduced, the electron mobility of the electron transport material is further improved, the problem of electron-hole imbalance in the organic electroluminescent device is solved, and the organic electroluminescent device has good application prospects. Meanwhile, the high triplet state energy level (ET) and the wide band gap of the material are ensured, the luminous efficiency is further improved, the energy level matching degree of each layer of a device is improved, the driving voltage is reduced, the service life of the device is prolonged, and compared with the prior art, the material has excellent device performance.

This invention provides an electron transport material and an organic electroluminescent device comprising the same, wherein the electron transport material has the structure shown in Formula I. The electron transport material of this invention not only possesses high stability but also excellent electron transport performance, enabling the organic electroluminescent device to have higher luminous efficiency and a longer lifespan.

The invention belongs to the technical field of organic electroluminescent materials, and particularly relates to an organic compound and an organic electroluminescent device containing the same. The organic compound provided by the invention has an adamantane-deuterated aryl-nitrogen heterocyclic ring three-unit coupled structure, and an electron transport material with high electron mobility and excellent stability is constructed. The adamantane-substituted deuterated aryl is connected to the nitrogen-containing heteroaryl parent nucleus to obtain the high-electron-mobility organic material, and when the high-electron-mobility organic material is used as an electron transport layer of an organic light-emitting electroluminescent device, the efficiency of the device can be improved, the service life of the device can be prolonged, and the working voltage can be reduced.

The present invention belongs to the field of semiconductor material technology, and in particular to a kind of anthracene-containing organic compound and its preparation method and application. The LUMO electron cloud distribution of the anthracene-containing organic compound provided by the present invention is further delocalized, which can improve the anti-electronic properties of the material and effectively improve the electronic stability of the material. The anthracene-containing organic compound provided by the present invention is based on anthracene as the core, and an aromatic fused ring group is connected to form a parent nucleus through a specific connection site. The parent nucleus can increase the weak interaction within the molecule, effectively reduce the evaporation temperature of the molecule, and improve the thermal durability of the material; further, the parent nucleus can suppress the π-π stacking between molecules, significantly improve the electron mobility of the molecule, and reduce the driving voltage of the device; and, due to the presence of the electron-withdrawing conjugation effect of the parent nucleus, the glass transition temperature of the material is increased, and the thin film stability of the material is effectively improved. As an electron transport material, the compound of the present invention can effectively improve device efficiency and service life.

The invention relates to a compound containing a pyran quinoxaline structure and application thereof, and belongs to the technical field of organic electroluminescent materials. The structural formula of the compound containing the pyran quinoxaline structure is shown in the specification; ar is selected from deuterated or undeuterated aromatic alkyl with the carbon number of 6-30 and deuterated or undeuterated heteroaryl with the carbon number of 5-30, and heteroatoms in the heteroaryl are selected from N, S and O. The compound containing the pyran quinoxaline structure is applied to an organic electroluminescent device. The compound containing the pyran quinoxaline structure is used as a main body material and an electron transport material of an organic electroluminescent device, can limit current carriers from flowing in a light-emitting layer, provides better device performance, including lower driving voltage, higher current efficiency and prolonged service life, meanwhile, the service life of the device is obviously prolonged, and the organic electroluminescent device can be applied to the field of organic electroluminescent devices. The compound has a good application effect in OLED light-emitting devices and has a good industrialization prospect.

The invention discloses a compound and application thereof, and belongs to the technical field of display. The chemical structural formula of the compound is as follows: Ar1-Ar2 is C6-C30 aryl or C3-C30 heteroaryl, and Ar3 is one of the following chemical structural formula a-e: chemical formula a, chemical formula b, chemical formula c, chemical formula d and chemical formula e; at least one of Z1-Z3 is N, and the balance is CH; each of L1 and L2 is a single bond, a C6-C30 arylene group or a C3-C30 heteroarylene group; l3 is a single bond, O, S, Se or; r1 to R8 are respectively and independently hydrogen, deuterium, fluorine, alkyl of C1 to C10 or aryl of C6 to C30; the ring A, the ring B and the ring C are C6-C30 arylene groups or C3-C30 heteroarylene groups; and n is an integer of 0-4. The compound can be used as an electron transport material and a hole blocking material, so that the voltage, the efficiency and the cycle life of an OLED (Organic Light Emitting Diode) device are improved.