257 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 discloses a multicolor photoelectric response synaptic device and a preparation method thereof. The multicolor photoelectric response synaptic device is of a multi-layer structure. The multilayer structure comprises a transparent conductive electrode layer, a hole transport material layer, a lead-free perovskite layer, an electron transport material layer, an organic semiconductor charge transfer compound layer and a metal electrode layer in sequence along the light incidence direction. The preparation method comprises the steps of preparing the transparent conductive electrode layer; sequentially preparing a hole transport material layer, a lead-free perovskite layer, an electron transport material layer and an organic semiconductor charge transfer compound layer on the transparent conductive electrode layer through a spin coating method; and preparing the metal electrode layer on the organic semiconductor charge transfer compound layer through vacuum evaporation. The multicolor photoelectric response synaptic device is reasonable in structural design, can realize ultraviolet-visible-near infrared multicolor photoelectric synaptic function simulation, can realize a color identification function on red light, green light and blue light in a visible light wave band, and has a good application prospect.

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 belongs to the technical field of luminescent materials, and discloses a heterocyclic compound and an organic electroluminescent device. The structural general formula of the heterocyclic compound is as shown in a formula (1): # imgabs0 # formula (1). The heterocyclic compound provided by the invention has the advantages of low driving voltage, high luminous efficiency, long device life and the like, and can be used as an electron transport material, a hole blocking layer material and an N-type charge generation layer material in OLED luminescent devices.

The invention belongs to the technical field of perovskite photovoltaic materials, and particularly relates to a Y-type non-fullerene acceptor electron transport material driven by coordination supramolecular action, and a preparation method and application of the Y-type non-fullerene acceptor electron transport material. According to the invention, a core of benzothiadiazole of Y6 is substituted by high-polarity benzoline and crown ether, and two types of Y-type NFAs, Y-Phen and Y-CE are developed. The Y-Phen and the Y-CE are respectively used as the ETL of the perovskite solar cell to obtain 25.03% and 25.61% of laboratory power conversion efficiency, and a device using the Y-CE as the ETL obtains 25.59% of certified power conversion efficiency which is obviously higher than the power conversion efficiency (23.58%) of a device using Y6 as the ETL. Meanwhile, the degradation rate of the optimized device to PCE is lower than 10% after 1440 hours, and the device has excellent performance in preparation of perovskite solar cells.

The invention relates to a preparation method of a perovskite photovoltaic cell, the cell is suitable for being arranged on an external substrate, and the preparation method comprises the following steps that the substrate serves as a supporting structure of the solar cell, and a transparent conductive substrate is deposited on the substrate; preparing a hole transport layer on the transparent conductive substrate; the method comprises the following steps: preparing and treating a perovskite material, and preparing a perovskite precursor solution by using a mixed solvent system of dimethyl sulfoxide, 2-methyltetrahydrofuran and acetonitrile; coating a perovskite precursor material on the hole transport layer to form a perovskite light absorption layer; depositing an electron transport material on the perovskite light absorption layer to form an electron transport layer; preparing a hole blocking layer on the electron transport layer, and finally depositing a back electrode on the hole blocking layer; organic unification of high-performance preparation and green manufacturing is realized.

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 invention relates to a light-emitting device and a manufacturing method thereof. The light-emitting device comprises a first electrode layer, a first light-emitting layer, a buffer layer, a connecting layer, a second light-emitting layer and a second electrode layer which are sequentially stacked, wherein the connecting layer is arranged on the side, away from the first light-emitting layer, of the buffer layer and comprises a P-type charge generation layer and an N-type charge generation layer, the N-type charge generation layer is located between the P-type charge generation layer and the buffer layer, and the N-type charge generation layer comprises a first N-type electron transport material; the buffer layer comprises at least one sub-buffer layer, and the sub-buffer layer comprises at least one of a hole blocking material, an electron transport material and a second N-type electron transport material. According to the invention, the structure of the Tandem OLED is simplified, the process is simplified, the production cost can be effectively reduced, and the performance of the existing Tandem OLED is maintained or further improved.

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.

The present application provides a compound of general formula (I), which can be used as an electron transport material. This compound has a parent structure of condensed heterocyclic substituted anthracene, with high bond energy between atoms, good thermal stability, and is conducive to intermolecular solid-state packing. At the same time, this compound has appropriate energy level levels with adjacent layers, which is conducive to the injection and migration of excitons. Using the compound of general formula (I) as an electron transport material can effectively reduce the driving voltage of the organic electroluminescent device, improve its luminous efficiency, and extend its service life. The present application also provides an organic electroluminescent device and a display device comprising the compound of general formula (I).

The invention discloses a stretchable imidazole polyethylene electron transport material as well as a preparation method and application thereof, and belongs to the technical field of organic photoelectric materials. The stretchable imidazole polyethylene electron transport material is obtained by taking polyethylene glycol methacrylate, 2-(butylamino) carbonyl oxo ethyl acrylate and an electron transport material structural unit as raw materials in a free radical polymerization mode under the condition of an organic solvent and an initiator. According to the invention, an electron transport material structural unit is introduced into the intrinsic stretchable elastomer in a chemical cross-linking manner, so that the stretchability and photoelectric properties of the elastomer are well balanced. The stretchable imidazole polyethylene electron transport material can be used as an electron transport layer material to prepare an electroluminescent device with high stretchability, high efficiency and high stability, and can be applied to the fields of flexible display, sensing detection, wearable electronic equipment and the like.

This application relates to the technical field of perovskite solar cells, and particularly to a perovskite solar cell and a preparation method thereof. A perovskite solar cell includes a conductive thin film substrate, a perovskite photoactive layer, a hole transport layer, and an electrode layer; a doped conductive enrichment layer is formed on the surface of the conductive thin film substrate; the doped conductive enrichment layer contains conductive particles A and conductive particles B that can form a conductive network; conductive particle A is composed of an inorganic metal-based carrier and a doped metal atom; conductive particle B is at least one of ZnO, SnO2, and In2O3. This application uses a special conductive thin film as a substrate, which serves as a light-transmitting conductive material and simultaneously functions as an electron transport material to collect electrons, replacing the structure of ITO or FTO transparent conductive material + electron transport material TiO2 or SnO2, reducing the number of layers of the battery and simplifying the structure of the perovskite solar cell, eliminating the cumbersome preparation process, and improving the overall production efficiency.

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 invention relates to a 2, 6-naphthyridine electron transport material efficiently constructed by a C-H activation-cyclization method and application of the 2, 6-naphthyridine electron transport material in the aspect of an organic light emitting diode (OLED). The method has the advantages of cheap and easily available raw materials, simple and efficient synthesis steps, good substrate universality, easy post-modification of a skeleton, good atom economy and the like; the electron transport material based on 2, 6-naphthyridine has the advantages of high thermal stability, high glass transition temperature, high mobility and the like, red, green and blue phosphorescent OLED devices prepared based on the electron transport material have very good effects, and the huge potential in the aspect of commercial value is proved.

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 an alternating current driven quantum dot electroluminescent device, and belongs to the technical field of luminescent devices. The device comprises a first tunneling heterojunction layer, a light-emitting layer and a second tunneling heterojunction layer, the first tunneling heterojunction layer comprises a tunneling layer A and a tunneling layer B; the second tunneling heterojunction layer comprises a tunneling layer C, a tunneling layer D and a tunneling layer E; the tunneling layer A and the tunneling layer D are independently made of an n-type conductive polymer material and / or an n-type metal oxide semiconductor material of which the work function is greater than 5.1 eV; the materials of the tunneling layer B and the tunneling layer E are independently p-type materials of which the highest occupied molecular orbital HOMO energy level is between-5.0 eV and-6.0 eV; and the tunneling layer C is made of an n-type electron transport material of which the lowest occupied molecular orbital (LUMO) energy level is-2.5 eV to-4.5 eV. The device provided by the invention effectively solves the problems of device attenuation related to carrier injection, charge injection imbalance relief, overhigh working voltage of the device and insufficient luminous intensity.

The present invention belongs to the technical field of materials science, and specifically discloses a donor-acceptor type compound based on an isoindigo derivative, a preparation method, a molecular wire and a molecular electric switch. The donor-acceptor type compound based on an isoindigo derivative is shown in Formula I: [formula content not provided in the original]. The present invention also discloses a preparation method of the donor-acceptor type compound based on an isoindigo derivative. The synthesis method of the present invention is simple, the raw material cost is low, the process is easy to industrialize, and the product purification is efficient and convenient. A series of donor-acceptor type compounds prepared based on isoindigo derivatives have different energy band gaps and play an important role as molecular wires in single-molecule electron transport materials. Through bias voltage regulation, the molecular conductance of the molecular wire can be reversibly regulated, playing an important role in practical application fields such as molecular electric switches.

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.