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155results about How to "Reduce energy level difference" patented technology

Compound with anthrone as core and use thereof

The invention discloses a compound with anthrone as a core and a use thereof. According to the compound, anthrone is a mother nucleus and is connected to an aromatic heterocyclic group so that molecular symmetry is destroyed, molecule crystallinity is destroyed, intermolecular aggregation is avoided and good film-forming performances are obtained. The compound as a light-emitting layer material is used for an organic light-emitting diode. An OLED device prepared from the compound has good photoelectric properties and can satisfy the requirements of the panel manufacturing companies.
Owner:JIANGSU SUNERA TECH CO LTD

Five-membered ring substituted compound with xanthone as core and use thereof

The invention discloses a five-membered ring substituted compound with xanthone as a core and a use thereof. According to the compound, xanthone is a mother nucleus and is connected to an aromatic heterocyclic group so that molecular symmetry is destroyed, molecule crystallinity is destroyed, intermolecular aggregation is avoided and good film-forming performances are obtained. The compound as a light-emitting layer material is used for an organic light-emitting diode. An OLED device prepared from the compound has good photoelectric properties and can satisfy the requirements of the panel manufacturing companies.
Owner:JIANGSU SUNERA TECH CO LTD

Compound taking triazine as core and application of compound on organic electroluminescent device

The invention discloses a compound taking triazine as a core and an application of the compound on an organic electroluminescent device. The compound takes triazine as the core, which has the characteristics of difficult crystallization among molecules, difficult aggregation and good film forming ability. When the compound is taken as a luminescent layer main material of the organic electroluminescent device for usage, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the device life can be obviously increased.
Owner:VALIANT CO LTD

Inversed organic thin-film solar cell and manufacturing method of inversed organic thin-film solar cell

The invention discloses an inversed organic thin-film solar cell and a manufacturing method of the inversed organic thin-film solar cell. The inversed organic thin-film solar cell structurally and sequentially comprises a substrate, a transparent electric conduction cathode ITO, a cathode buffer layer, an optical activity layer, an anode buffer layer and a metallic cathode from bottom top top. Transparent electric conduction nano-particles are added in the anode buffer layer. The manufacturing method includes the steps of forming a substrate body through the substrate and the transparent electric conduction cathode ITO, washing and drying the base plate, manufacturing the cathode buffer layer on the surface of the transparent electric conduction cathode ITO, manufacturing and baking the optical activity layer on the surface of the cathode buffer layer, manufacturing the anode buffer layer on the surface of the optical activity layer, conducting annealing on the substrate body, and plating the anode buffer layer with the metallic cathode in an evaporation mode. High conductivity and high reflectivity of the transparent electric conduction nano-particles are used, the electron transmission rate and the light reflection rate of a traditional anode buffer layer are strengthened, the absorptivity of the optical activity layer to sunlight is improved, the light current density and the carrier transmission efficiency of the organic thin-film solar cell are accordingly improved, the series resistance of the cell is reduced, and the photoelectric conversion efficiency of a device is improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

An organic light emitting diode device

The invention relates to an organic light emitting diode device. The organic light emitting diode device comprises a first light emitting part between an anode and a cathode with the first light emitting part including a first light emitting layer, a second light emitting part comprising a second light emitting layer on the first light emitting part, and a first charge generation layer between the first light emitting part and the second light emitting part, wherein the first charge generation layer comprising at least two hosts, and at least one of the at least two hosts including a pyrene compound.
Owner:LG DISPLAY CO LTD

Preparation methods of natural biomass quantum dot and biomass quantum dot-copper nanocomposite and application of natural biomass quantum dot

The invention relates to preparation methods of a natural biomass quantum dot and a biomass quantum dot-copper nanocomposite and application of the natural biomass quantum dot. The preparation methodof the biomass quantum dot comprises the following steps: S1, grinding spinach leaves into paste; S2, adding a mixed solution of ethanol and acetone, uniformly mixing and filtering; S3, adding oleic acid, polyethylene glycol diamine and a magnetic stir bar into a three-neck flask, pumping air out after sealing, introducing argon, stirring, heating to 170 to 190 DEG C, and stopping heating when thesolution is in orange-yellow color; S4, cooling the solution to room temperature, adding a chlorophyll crude extracting solution, heating the solution to 170 to 190 DEG C under the protection of theargon and magnetic stirring, and keeping the temperature for 170 to 190 minutes; S5, naturally cooling the solution to room temperature, and adding concentrated HCl till the solution is in strong acidity; S6, standing for layering, and collecting subnatant; S7, adjusting the pH value of the solution to neutral with a saturated NaOH solution, filtering larger particles, and performing dialysis to obtain a biomass quantum dot solution. The biomass quantum dot solution has the characteristics of high fluorescence intensity, high light stability and high biocompatibility.
Owner:GUANGXI NORMAL UNIV

Thermotropic fluorescent color-variable coordination polymer containing [Cu414]n clusters as well as synthesis method and application thereof

The invention provides a thermotropic fluorescent color-variable coordination polymer containing [Cu414]n clusters as well as a synthesis method and application thereof and relates to a thermotropic fluorescent color-variable coordination polymer as well as a synthesis method and application thereof. The thermotropic fluorescent color-variable coordination polymer containing [Cu414(C14H14N4)2]n clusters is used for solving the technical problems of single emitted light color, short fluorescent life and high raw material cost of an existing thermotropic fluorescent color-variable material. The thermotropic fluorescent color-variable coordination polymer containing [Cu414(C14H14N4)2]n clusters has a molecular formula of [CU414(C14H14N4)2]n, and has a structural formula as shown in the specification. A preparation method comprises the following steps of mixing raw materials; heating with water; cooling; filtering; drying. The method has the beneficial effect that the yield is about 60%. The polymer presents yellow fluorescence at room temperature, and is good in single color property; a thermotropic fluorescent color-variable material capable of changing yellow fluorescence into red fluorescence is obtained by virtue of regulating different temperatures. The polymer is doped into polymethyl acrylate, so that the strength is improved, raw materials are easily available, the preparation method is simple, and the polymer can serve as a raw material for a fluorescent material film.
Owner:HARBIN INST OF TECH

Polymer, display panel and display device

The invention belongs to the technical field of OLEDs (organic light emitting diodes) and provides a polymer of a structure of formula (I) as shown in the specification. In the formula, R1 and R2 arerespectively selected from C1-C20 alkyl, C3-C20 naphthenic base, C1-C20 alkoxyl and substituted or unsubstituted aryl or heteroaryl; L is selected from single bonds, phenyl, naphthyl, pyridyl, pyrimidyl and pyrazinyl; R3 is selected from substituted or unsubstituted aryl or heteroaryl; R4 is selected from alkyl or alkoxyl of C4-C20; n is greater than or equal to 4. The polymer provided by the invention comprises heterocyclic boron-carbazole structure and has TADF (thermal activation delay fluorescence) properties, when the polymer is used in an organic light emitting diode, light can be emitted from triplet exciton with transition inhibition of conventional fluorescence molecules, and thus the efficiency of a device can be improved. Meanwhile, a carbazole polymer type TADF material self has a bipolar property, when the polymer is used as a main body or secondary material of a light emitting layer, the transmission capability of two charge carriers and charge carrier balance can be greatly improved, the fluorescence quantum efficiency can be improved, and the voltage of the device can be reduced.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD

Compound taking heteroatom-containing benzfluorenone as core and application of compound to organic electroluminescence device

The invention discloses a compound taking heteroatom-containing benzfluorenone as a core and application of the compound to an organic electroluminescence device. The compound takes the heteroatom-containing benzfluorenone as the core and has the characteristics that molecules are not easy to crystallize or gather, and a good film forming property is realized. When the compound disclosed by the invention is used as a luminescent layer material of the organic electroluminescence device, the current efficiency of the device is greatly improved; meanwhile, the life of the device is obviously prolonged.
Owner:JIANGSU SUNERA TECH CO LTD

Compound taking anthranone as core and application of compound in organic electroluminescent devices

InactiveCN107057680AAvoid aggregationGood film formation and fluorescence quantum efficiencyOrganic chemistrySolid-state devicesOrganic electroluminescenceCrystallization
The invention discloses a compound taking anthranone as a core and an application of the compound in organic electroluminescent devices. The compound has the characteristics that molecules are not prone to crystallization and not prone to aggregation and the film forming property is good, and the thermal stability of the material can be improved due to rigid radicals in the molecules. The compound disclosed by the invention is applied to the organic electroluminescent devices as a luminescent layer material, and manufactured organic electroluminescent devices have good photoelectric properties and can meet the requirements of panel manufacturing enterprises.
Owner:VALIANT CO LTD

Laminated organic light emitting diode

The invention discloses a laminated organic light emitting diode which comprises a substrate, as well as an anode layer, a plurality of light emitting unit layers and a cathode layer which are sequentially formed on the substrate, wherein a connection layer is arranged between every two adjacent light emitting unit layers and is in an at least four-layer structure which comprises at least three electronic transmission layers and a hole transmission layer; the thicknesses of the electronic transmission layers and the hole transmission layers are 1-100nm; a charge separation interface is arrange on a surface, contacted with each hole transmission layer, of the electronic transmission layer; the electronic transmission layers forming the charge separation interfaces are made of organic materials with LUMO (Lowest Unoccupied Molecular Orbital) energy levels higher than 5.0eV or inorganic materials with conduction band levels of 5.5-6.5eV; and the hole transmission layers forming the charge separation interfaces are made of organic materials with HOMO (Highest Occupied Molecular Orbital) energy levels not higher than 5.7eV. According to the device, appropriate middle energy level layers are arranged between the charge separation interfaces and the light emitting unit layers, a transition potential barrier is reduced, and driving voltage of the laminated device is reduced, so that higher current efficiency is obtained.
Owner:KUNSHAN VISIONOX DISPLAY TECH +2
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