121 results about "Electron transporting material" patented technology

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 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 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)

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.

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.

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 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.

The application provides a compound of formula (I), the bond energy between atoms is high, the compound has good thermal stability, and the solid-state stacking between molecules is favorable, and the energy level between adjacent layers is suitable, which is favorable for the injection and migration of excitons. When used as an electron transport material, the compound can effectively reduce the driving voltage of an organic electroluminescent device, improve the light-emitting efficiency of the organic electroluminescent device, and prolong the service life of the organic electroluminescent device. The application also provides an organic electroluminescent device and a display device comprising the compound of formula (I).

The invention discloses an organic photoconductor drum, which comprises a conductive substrate, and a barrier layer, a charge generation layer and a charge transmission layer which are sequentially formed on the conductive substrate, and also comprises a self-repairing protection layer formed on the charge transmission layer, the charge generation layer is a gradient charge generation layer, and the charge transmission layer is a gradient charge transmission layer. The gradient charge generation layer is composed of two or more phthalocyanine materials with different photosensitive characteristics, and wide-spectrum and efficient absorption from visible light to near infrared spectrum is achieved; according to the gradient charge transport layer, a built-in electric field is formed through gradient distribution of a hole transport material and an electron transport material, and the mobility and balance of charges are remarkably improved; the outermost self-repairing protective layer contains a microencapsulated repairing agent which can be automatically released during friction damage, surface scratches are repaired, the mechanical durability of the photoconductor drum is greatly improved, and the service life of the photoconductor drum is greatly prolonged.

An OLED device, including: an anode (100), a cathode (300), and a first light-emitting unit (200) located between the anode (100) and the cathode (300). The first light-emitting unit (200) comprises a hole functional unit (210) and a light-emitting layer (220) that are sequentially stacked. The hole functional unit (210) is located between the anode (100) and the light-emitting layer (220). The hole functional unit (210) comprises a first functional layer (211) for transporting electrons, a second functional layer (212) for injecting holes, and a third functional layer (213) for transporting holes, which are sequentially stacked. The first functional layer (211) comprises an electron transport material on which one or more among an active metal and an active metal compound is doped.

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 has low driving voltage and / or high device efficiency, and especially, the device has good application prospects. 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.

A technology is provided that can contribute to improving the performance of a light-emitting device that has a layer made of metal oxide nanoparticles between a cathode and an anode. [Solution] A method for forming a printed layer includes forming a coating film on the surface of the substrate by performing relative movement between an inkjet head and a substrate and ejecting an inkjet ink composition from the inkjet head, wherein the inkjet ink composition comprises metal oxide nanoparticles made of a material selected from the group consisting of hole injection materials, hole transport materials, and electron transport materials, and a dispersion medium containing a glycol-based solvent, and the relative movement and ejection are performed such that the landing positions of the inkjet ink composition on the surface form a checkerboard pattern and the dots made of the inkjet ink composition that have landed on the surface merge with each other.

The invention relates to a heterocyclic organic compound containing quinazoline, and belongs to the technical field of organic electroluminescent materials. The heterocyclic organic compound containing quinazoline contains electron withdrawing units including triazinyl and quinazolinyl, has good electron transport performance, and can effectively improve the luminous efficiency and prolong the service life of a device when being used as an electron transport material to be applied to an OLED (Organic Light Emitting Diode) device.

A sensor-embedded display panel includes a light emitting element and a sensor which include separate portions of a first common auxiliary layer including a hole transport material and a second common auxiliary layer including an electron transport material. The sensor includes first and second semiconductor layers proximate to the first and second common auxiliary layers, respectively, and including a p-type semiconductor and a non-fullerene n-type semiconductor having a LUMO energy level deeper than that of the electron transport material, respectively. An insertion layer between the second semiconductor layer and the second common auxiliary layer includes a metal, a metal compound, or any combination thereof. A work function of the metal or a LUMO energy level of the metal compound is deeper or shallower than the LUMO energy level of the non-fullerene n-type semiconductor and the LUMO energy level of the electron transport material within less than about 1.3 eV, respectively.

This invention relates to a compound containing a pyranoquinoxaline structure and its applications, belonging to the field of organic electroluminescent materials technology. The compound containing the pyranoquinoxaline structure has the following structural formula: Ar is selected from aromatic hydrocarbon groups with 6-30 carbon atoms (deuterated or undeuterated) and heteroaryl groups with 5-30 carbon atoms (deuterated or undeuterated), wherein the heteroatoms in the heteroaryl group are selected from N, S, and O. The compound containing the pyranoquinoxaline structure is used in organic electroluminescent devices. The compound containing the pyranoquinoxaline structure of this invention, used as a host material and electron transport material in organic electroluminescent devices, can restrict carrier flow within the light-emitting layer, providing better device performance, including lower driving voltage, higher current efficiency, and extended lifespan. It significantly improves device lifespan and has good application effects in OLED light-emitting devices, showing promising industrialization prospects.

The invention provides a solar cell and a preparation method thereof, a power utilization device and a power generation device, the solar cell comprises an electron transport layer, and an electron transport material in the electron transport layer comprises fullerene or a derivative thereof and an N-type semiconductor material layer which at least partially coats the outer surface of the fullerene or the derivative thereof. According to the solar cell, migration of anions of the perovskite light absorption layer can be reduced, and the efficiency and the stability of the solar cell are improved.