93results about How to "Increase HOMO level" patented technology

The invention discloses a fused ring compound, which has a structure shown as a formula (I) or a formula (II). The effective conjugation of aromatic rings and heterocyclic rings is controlled in the fused ring compound; the hole performance is improved; meanwhile, the electronic transmission performance is favorably balanced; the compound has high triplet state energy level and glass transition temperature; material molecules cannot easily crystallize; when the fused ring compound is used as a luminescent layer host material, the efficient transfer of energy to guest materials can be guaranteed. The substituent group of the fused ring compound is regulated, so that the electron and hole transmission performance is further improved; the singlet state and triplet state energy level difference is reduced; the compound region of carriers is expanded; the triplet state exciton annihilation is prevented. The invention also discloses an organic electroluminescence device; at least one function layer contains the fused ring compound; the fused ring compound is used as the host material of the luminescent layer and is matched with the adjacent carrier transmission layer energy level; the luminous efficiency of the device is improved; meanwhile, the driving voltage of the device is reduced.

The invention discloses lithium ion battery electrolyte with consideration to water removal, acid reduction and improvement of high-voltage performance, and relates to lithium ion batteries. The lithium ion battery electrolyte with the consideration to the water removal, the acid reduction and the improvement of the high-voltage performance comprises, by weight, 5.0%-18.0% of lithium salt, 83.0%-94.0% of non-aqueous organic solvents, 0.1%-5.0% of silazane additives and 0.1%-5.0% of other functional additives. The lithium ion battery electrolyte has the advantages of simple preparation process,low cost, easiness in implementation and good market prospect.

A 9,9'- connected host material based on a 4,4'-difluorene structure and an application thereof. The invention discloses a host material which has high triplet state and HOMO energy level and has excellent performance. According to the host material, 4,4'- connected difluorene structure is used as a molecular skeleton, and a substituent group is connected at 9,9'- site. Diphenylamine element Dn with hole transport performance can be connected, and An element with electron-transport performance also can be connected, wherein the An element contains an oxygen-phosphorus element and a sulfur-oxygen element; and in addition to the oxygen-phosphorus element and the sulfur-oxygen element, a special spiral structure also can be formed. A synthetic method of the host material is simple and practicable, and the host material is suitable for wide application. An organic electroluminescence blue phosphorescent luminescent device made of the host material has high efficiency, high brightness, low extinction efficiency and electroluminescence performance of low starting voltage, and can widely be applied in the field of organic electroluminescence.

The invention provides an organic electroluminescence device and relates to the technical field of organic electroluminescence. According to the invention, compounds shown as chemical formula I and IIare applied to the organic electroluminescence device, are jointly used as a hole transport layer of the device and are adaptively combined with each other, so that heat stability and carrier transport property of the material are effectively promoted, compounding probability of carrier is promoted, driving voltage of device is effectively reduced, luminous efficiency of device is increased, service life of device is prolonged and the problems of low heat stability of material, short service life and low luminous efficiency of the organic electroluminescence device are effectively solved.

The invention discloses a cathode injection material, and a manufacturing method and an application thereof. The cathode injection material comprises nano-titanium dioxide and a cesium salt doped mutually. The manufacturing method comprises the following steps of: preparing a nano-titanium dioxide solution and a cesium salt solution respectively; mixing a nano-titanium dioxide solution dispersion system with the cesium salt solution to obtain a mixed solution; and coating the mixed solution onto a conductive substrate in a spinning way, and heating and drying to obtain the cathode injection material. The cathode injection material disclosed by the invention has the advantages of low cost, capability of effectively enhancing the input and the transmission of charges, increase in the LUMO energy level of a cathode when applied to an organic electroluminescent device, matching with the energy level of an organic electroluminescent structure, reduction in a potential barrier between the cathode injection material and the organic electroluminescent structure, more suitability for electron injection, increase in the electron injection efficiency, preferable increase in the light extraction capability of the organic electroluminescent device, high luminance and long service life. The manufacturing method of the cathode injection material has a simple procedure and high production efficiency.

The invention provides a condensed ring-containing triarylamine compound and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. The condensed ring-containing triarylamine compound has excellent hole transport performance, has the advantages of high luminous efficiency and low driving voltage, is a good hole transport material, and can improve the luminous efficiency of an organic light-emitting device, prolong the service life of the organic light-emitting device and reduce the driving voltage of the device; and the condensed ring-containing triarylamine compound provided by the invention is applied to the organic light-emitting device as a covering layer material, so that the light extraction efficiency can be improved, the light-emitting efficiency of the organic light-emitting device is improved, and meanwhile, the service life of the device can be prolonged. The triarylamine organic compound is simple to synthesize and easy to operate, and can be widely applied to the fields of panel display, lighting sources, organic solar cells, organic photoreceptors or organic thin film transistors and the like.

The invention discloses electrolyte-containing nitrile ethyl amine and a lithium secondary battery. The electrolyte comprises electrolyte lithium salt, nitrile ethyl amine, a non-water organic solvent and an additive, wherein the concentration of the electrolyte lithium salt in electrolyte is 0.5-2mol/L; the nitrile ethyl amine is 0.1%-20% (in percentage by weight) of the electrolyte; the used amount of the additive is 0.1-10.0% of the weight of the organic solvent. The nitrile ethyl molecular structure comprises more than one pair of bisnitrile functional groups and can be complexed with transitional metal ions, is added by a small amount to effectively inhibit irreversible oxidation reaction of the organic solvent on a positive surface, so that the oxidization resistance of the electrolyte is improved; the nitrile ethyl molecular structure contains a Louis alkaline amine radical, and can be used for effectively stabilizing physical and chemical properties of the electrolyte through the complexing between the amine and free trace HF and PF5 in the electrolyte. With the technical characteristics, the nitrile ethyl amine is beneficial to improving the circulating performances of the battery under high voltage, so that a gas inflation rate of the battery under a high-temperature storage environment is reduced, and a capacity recovery rate is increased.

An organic electroluminescent device comprises an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode, all of which are sequentially stacked. The cathode layer is composed of a film layer, a zinc compound doped layer, and a metal sulfide layer. The film layer is made of at least one material selected from an indium tin oxide target, an aluminum zinc oxide target, and an indium zinc oxide target. The zinc compound doped layer includes a zinc compound and a hole injection material doped in the zinc compound, wherein the zinc compound includes at least one selected from zinc oxide, zinc sulfide, zinc selenide, and zinc chloride. The metal sulfide layer includes at least one material selected from zinc sulfide, cadmium sulfide, magnesium sulfate and copper sulfide. The organic electroluminescent device has high luminous efficiency. The invention further provides a method for preparing the organic electroluminescent device.

The invention discloses a lithium ion battery electrolyte containing an unsaturated bond silane additive, which comprises an electrolyte lithium salt, a non-aqueous organic solvent and a film-forming additive, and the film-forming additive comprises an unsaturated bond-containing silane additive with a structure shown in a formula (I). The invention further discloses a lithium ion battery. The lithium ion battery comprises a positive plate, an isolating membrane, a negative plate and the lithium ion battery electrolyte containing the unsaturated bond silane additive. According to the invention, the formula of the electrolyte is optimized, all the components have a synergistic effect, the advantages of the components can be exerted, the defects of the components can be mutually inhibited, and the cycle performance of the lithium ion battery and the capacity retention rate after high-temperature storage are remarkably improved.

The invention discloses a compound with ketone as the core, a preparation method and application of the compound. The compound has small delta Est, reverse interstitial leaping of energy is facilitated, and the compound has a high triplet state energy level (T1) and appropriate HOMO and LUMO energy levels, and is suitable for being used as a main material of a luminescent layer of an organic electroluminescence device; and in addition, the compound has the strong group rigidity, and has the characteristics of difficult crystallization and difficult aggregation among molecules and good film formation. The compound is applied to an OLED device as an organic electroluminescence functional layer material, the current efficiency, the power efficiency and the external quantum efficiency of the device are all greatly improved, and meanwhile, the service life of the device is obviously prolonged.

The present invention discloses a 1,1-bis(4'-aminophenyl)cyclohexane group-containing hole transport material, a preparation method and applications thereof, and belongs to the technical field of perovskite solar cells, wherein the 1,1-bis(4'-aminophenyl)cyclohexane group-containing hole transport material has a structure represented by a formula 1, R is represented by a formula 2 or formula 3 or formula 4 or formula 5 or formula 6 or formula 7 or formula 8 or formula 9 or formula 10. The invention further discloses a preparation method and applications of the hole transport material. According to the present invention, the hole transport material is easy to prepare and refine, has characteristics of high yield and good solubility, is easily dissolved in common organic solvents, has high HOMO energy level, can be well matched to the energy level of the perovskite material, further has characteristics of high hole mobility, high glass transition temperature and high thermal stability, and easily forms the good amorphous film.

The invention provides compounds, an organic light-emitting device comprising the same, a display panel and a display device. The compounds have a structure represented by a formula I. The organic light-emitting device comprises an anode, a cathode and an organic thin film layer located between the anode and the cathode, and the organic thin film layer comprises a light-emitting layer and furthercomprises one or a combination of at least two of a hole transport layer, an electron blocking layer and a light-emitting auxiliary layer; at least one of the hole transport layer, the electron blocking layer and the light-emitting auxiliary layer contains at least one of the compounds. The compounds provided by the invention have a relatively shallow HOMO energy level, a relatively shallow LUMO energy level and a relatively high triplet state energy level, have the advantages of proper hole mobility, high Tg, large molecular torque, difficult crystallization and good thermal stability, can beused in the hole transport layer, the electron blocking layer and/or the light-emitting auxiliary layer of the organic light-emitting device, reduces the working voltage of the device, improves the light-emitting efficiency of the device and prolongs the service life of the device.

The invention relates to a heterocyclic compound, a synthetic method thereof and an organic light-emitting diode containing the compound. The structural formula of the heterocyclic compound is as shown in the figure I in the specification. According to the heterocyclic compound, the disubstituted pyridino-heterocyclic compound is obtained by introducing oxygen and a sulfur heterocyclic ring such as benzofuran and benzothiophene into a material, the HOMO energy level of the material is improved by the plane structures, the charge transfer efficiency is improved, and the thermodynamic stability of the material is improved; and meanwhile, the triplet-state energy level accords with the exciton binding requirement by virtue of special ortho-substitution connection, and the heterocyclic compound is applied to the organic light-emitting diode, so that the organic light-emitting diode (OLED) has the advantages of being high in efficiency, low in operating voltage and long in service life.

The invention provides a blue-ray metal complex shown as the formula I and an organic electroluminescent device containing the blue-ray metal complex. By means of introduction of an alkoxy group to a complexing N atom para-position, HOMO (highest occupied molecular orbital) energy level of the complex is effectively increased, and hole injection barrier is lowered. Compared with the prior art, the organic electroluminescent device based on the blue-ray metal complex has the advantages of low driving voltage and high power efficiency.

The invention provides a quantum dot light-emitting diode. The quantum dot light-emitting diode comprises an anode and a cathode which are oppositely arranged, a quantum dot light-emitting layer arranged between the anode and the cathode, and a hole function lamination layer arranged between the anode and the quantum dot light-emitting layer, wherein the hole function lamination layer comprises ahole injection layer, a hole transport layer arranged on the hole injection layer and an interface layer arranged between the hole injection layer and the hole transport layer, the hole injection layer is arranged adjacent to the anode, and the material of the hole injection layer contains a transition metal oxide; the hole transport layer is arranged adjacent to the quantum dot light-emitting layer, and the material of the hole transport layer contains an organic hole transport material; and the interface layer is made of a graphene material.

The invention belongs to the technical field of organic luminescent materials, and discloses a polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof. The structural general formula of the luminescent material is disclosed as Formula (I), wherein the hole refers to a hole transmission group. The preparation method comprises the following steps: carrying out reaction on 2,2'-diiodo-4,4'-dibromobiphenyl, butyl lithium and silicon tetrachloride to obtain 9,9'-dichlorosilafluorene; carrying out reaction bromine-atom-containing carbazole or triarylamine and butyl lithium or metal magnesium to obtain corresponding organic lithium or a Grignard reagent, and adding the organic lithium or Grignard reagent into the 9,9'-dichlorosilafluorene solution to react, thereby obtaining a 2,7-dibromosilafluorene monomer of which the side group is provided with carbazole or triphenylamine; and finally, carrying out polymerization reaction on the monomer to obtain the polysilafluorene luminescent material with hole transmission groups. The luminescent material can be used in the fields of electroluminescence, photovoltaic batteries, nonlinear optics and transduction.

The invention discloses a thiophene-carbazole core four-arm hole transport material as well as a preparation method and application thereof; thiophene-carbazole is taken as a core, so that the HOMO energy level and LUMO energy level of the material are remarkably higher than those of mixed halogen perovskite, electrons can be prevented from jumping to a hole transport layer from a perovskite layer, and an interface electron recombination phenomenon is effectively inhibited. The preparation method comprises the following steps: carrying out a coupling reaction on p-iodoanisole and p-bromoaniline to generate an intermediate (5); carrying out substitution reaction on the intermediate (5) and bis(pinacolato)diboron to generate an intermediate (6); carrying out coupling reaction on the intermediate (6) and 2,3-dibromothiophene to generate an intermediate (7); carrying out bromination reaction on the intermediate (7) to generate an intermediate (8); carrying out coupling reaction on the intermediate (6) and 3,6-dibromocarbazole to generate an intermediate (9); and carrying out coupling reaction on the intermediate (9) and the intermediate (8) to generate a final product CZ-1. When the hole transport material provided by the invention is used for a perovskite solar cell, a cell device has relatively high photoelectric conversion efficiency.

The invention discloses indacenodifuranyl organic solar cell donor materials, and a preparation method and an application thereof, wherein the structural formula of the IDF-based polymers is shown inthe specification, wherein R is n-hexyl, n-octyl, other groups defined in the specification, or other alkane and aromatic hydrocarbons, and n is 8-50. Besides, the series of designed and synthesized polymers PIDFCx have relatively high conjugation degree, relatively high HOMO energy level, relatively good light capturing capability and electrochemical performance; polymers PIDFC2C4 and PIDFC8 of which the side chains are isooctyl and n-octyl are taken as examples, the corresponding cell obtains relatively good photoelectric conversion efficiency under the condition of no post-treatment.