33results about How to "Maintain luminous performance" patented technology

The invention discloses a light-emitting diode (LED) epitaxial structure and a manufacturing method thereof. The LED epitaxial structure successively comprises an epitaxial substrate, a leukotriene (LT)-GaN nucleating layer, a high-temperature non-doped buffer layer, a P-GaN layer, a P-AlGaN layer, a diffusion barrier layer, a multiple quantum well (MQW) luminous layer, an InGaN current expansion layer, an N-ZnO layer and a surface-coarsened ZnO layer. The manufacturing method comprises the following steps: pre-treating the epitaxial substrate; growing the nucleating layer; growing the buffer layer; growing the P-GaN layer; growing the P-AlGaN layer; growing the diffusion barrier layer; growing the MQW luminous layer; growing the InGaN current expansion layer; growing the N-ZnO layer; and growing the surface-coarsened ZnO layer. By using the LED epitaxial structure obtained by virtue of the manufacturing method provided by the invention, an excellent electrical property and a good optical property are obtained, the internal quantum efficiency and the electronic static discharge (ESD) resistance capability are improved, the lost light caused by total reflection is lowered, the external quantum efficiency is greatly improved, a high-brightness LED is obtained, and the purposes of development and sustainable development of the LED industry are greatly promoted.

The present invention provides a kind of RE complex anion intercalated hydrotalcite with fluorescent property and its preparation process. Through ion exchange, the RE complex anion enters to interlamination of the hydrotalcite to constitute laminated material with RE complex anion accounting 40-100 % of the total interlamination anion mole number; and after the RE complex intercalation enter the interlamination of the hydrotalcite, the fluorescent performance may be maintained. The present invention utilizes the intercalating and assembling performance and the laminate controlling and locating effect of laminated hydrotalcite material to assemble RE ion with excellent optical performance into interlamination of the hydrotalcite and to realize the molecule level hybridization of RE ion in interlamination of the hydrotalcite. Through regulating the laminate metal, the present invention prepares organic and inorganic hybridized luminous material with homogeneously distributed RE element and adjustable material grain size.

The invention discloses a food and beverage outer package printed with luminescent patterns. The food and beverage outer package comprises a container for accommodating foods and beverages, wherein the outer wall of the container is provided with a luminescent ink coating for displaying the luminescent patterns; the luminescent ink coating is formed by printing luminescent ink on the outer wall of the container, and the luminescent ink is prepared from the following raw materials in part by weight: 30 to 80 parts of long afterglow fluorescent powder, 10 to 50 parts of light-transmitting glass pigment, 15 to 35 parts of suspension, 5 to 10 parts of solid dispersant and 2 to 5 parts of defoaming agent; and the fusion temperature of the suspension is not higher than 200 DEG C. Aiming at the problems that the conventional food and beverage outer packages do not have luminescent performance and striking highlighting, and the conventional luminescent ink does not have high temperature resistance and cannot be used for printing on the food and beverage outer packages, the invention provides the food and beverage outer package printed with the luminescent patterns, which can luminesce and is extremely striking in a dim environment and can resist high temperatures in the process of printing the luminescent ink coating.

The invention discloses night-gloss glass printing ink, a preparation method and a printing method on a glass product. The night-gloss glass printing ink is prepared from long afterglow fluorescent powder, light-transmitting glass pigment, a suspensoid agent, a solid dispersion agent and a defoaming agent. The night-gloss glass printing ink is prepared by uniformly mixing the long afterglow fluorescent powder with the light-transmitting glass pigment, adding the mixture in the fused supensoid agent, solid dispersion agent and defoaming agent, and stirring and cooling. The printing method is realized by the following steps of: silk printing night-gloss patterns on the glass product with the night-gloss ink; raising the temperature of the glass product to 520-650DEG C; and maintaining the temperature for 20-30 minutes and then cooling to obtain the finished product. The night-gloss glass printing ink is roasted silk printing ink for resisting the high temperature of 520-650DEG C and being applied to the glass product and is ink which can be quickly cured and has remarkable night-gloss effect, strong adhesive force and friction resistance; and the preparation method has simple process, and is convenient to operate and suitable for industrial production.

The invention provides a ternary rare earth complex and application of the complex in preparing high-strength hybrid luminous hydrogel. The chemical structural formula of the ternary rare earth complex is shown as follows. First terpyridyl bridged imidazolium salt is used for being combined with a rare earth beta-diketone complex to form a ternary complex, the ternary complex can be self-assembled in water to form a micellar structure, and then rare earth ions and ASPA are isolated through the collaborative protection on the rare earth ions by the ternary complex and the micellar structure, so that the aim of preparing a hydrogel which is good in luminescence property and high in mechanical strength is achieved. The hydrogel uses water as a medium, the preparation method is simple, easy and environmentally friendly, and a volatile organic solvent is avoided from being used. Please see the formula in the description.

The invention discloses a rare-earth complex nano luminescent material. The rare-earth complex nano luminescent material is obtained by performing controlled coordination reaction on rare-earth nitrate aqueous solution and mixed aqueous solution of ligand; the formula structure of the rare-earth complex nano luminescent material is [Ln(ad)0.5(phth)(H2O)2], wherein in the formula, Ln is single rare-earth element Eu, Tb or double rare-earth element of combination of Eu and Yb, or combination of Tb and Gd; in the formula, ad and phth are respectively organic ligand adipic acid and phthalic acid; the nano luminescent material is in nano sheet appearance; and the nano sheets can be mutually gathered to form flower-shaped appearance. The single rare-earth material and the double rare-earth doping material are strong fluorescent material; particularly, when the Gd-Tb double rare-earth material contains only 10% of Tb, the luminescent strength is nearly same as that of the pure Tb material. Therefore, the luminescent material has the advantages of nano materials; and moreover, the cost can be reduced through doping, thus, the rare-earth complex nano luminescent material has wide application prospect.

The invention discloses an outdoor fluorescent wood-plastic floorboard. The preparation method comprises the following steps: adding a luminous pigment into the wood-plastic floorboard raw materials, wherein the luminous pigment is an organic modified fluorescent material; mixing, treating by a melt plasticizing facility, and carrying out molding formation to obtain the integrally-luminous fluorescent wood-plastic floorboard; or mixing the organic modified fluorescent material used as the luminous pigment with a wood-plastic floorboard coextrusion material, adding the mixture into a side extrusion hopper of a coextruder, coextruding with the raw materials of the main extruder wood-plastic floorboard, and carrying out mold extrusion formation to obtain a surface coextruded wood-plastic floorboard, thereby obtaining the surface-luminous fluorescent wood-plastic floorboard. The invention also discloses a preparation method of the outdoor fluorescent wood-plastic floorboard. The method disclosed by the invention can be used for preparing the fluorescent wood-plastic product with uniform color, favorable durability and favorable luminescence, and the fluorescent wood-plastic product has the effects of dim light indication and decoration.

The invention discloses a fabrication method of an LED device. Graphene is introduced to a quantum dot-LED package system, while the graphene can be directly combined with a quantum dot to cause the quantum dot to be quenched when the graphene and a quantum dot are directly mixed for a quantum dot-LED device. According to the fabrication method, a quantum-dot microsphere is used for substituting quantum-dot powder in a traditional LED device, the quantum-dot microsphere is employed to be mixed with the graphene, the quantum dot can be prevented from being quenched, the luminous performance of the quantum dot can be effectively maintained, and high light conversion efficiency and high luminous efficiency of the LED device are ensured.

The invention belongs to the technical field of functional inorganic nanocrystal surface modification, and relates to a method for transferring oil-soluble up-conversion nanocrystals to an aqueous phase so as to improve the biocompatibility of the up-conversion nanocrystals. The method comprises the following steps of: dissolving 0.02 to 0.2g of small molecular surfactant in 10 to 20ml of water in a room temperature open system; and adding 1 to 4 ml of up-conversion nanocrystal solution prepared by dissolving up-conversion nanocrystals in a low boiling point organic solvent, and heating to the temperature of between 55 and 80DEG C to volatilize the organic solvent so as to obtain the water-soluble up-conversion nanocrystals. By lyophobic-lyophobic interaction of the small molecular surfactant and ligands on the surfaces of the up-conversion nanocrystals, stable coating layers are formed, and the hydrophobicity of the surfaces of the nanocrystals is changed to hydrophilcity. The method is easy and convenient to implement; different surfactants can be introduced according to requirements; a problem that the up-conversion nanocrystals are hardly transferred from the oil phase to the aqueous phase is solved; and the method provides a reaction platform for coupling the up-conversion nanocrystals with biomolecules and other materials.

The invention relates to quantum dot glass phosphor powder as well as a preparation method and application thereof. The quantum dot glass phosphor powder is prepared from the following raw materials in percentage by weight: 1%-15% of a quantum dot material and 85%-99% of a silicon-based mesoporous material. The preparation method is as follows: sintering the quantum dot material and the silicon-based mesoporous material. The quantum dot glass phosphor powder is applied to a white-light LED (light-emitting diode) apparatus, an LED display, an LED backlight source, a signal indicator and an indicator for illumination. The quantum dot glass phosphor powder with different luminous intensities and transmittance is obtained by adjusting the quantum dot doping concentration; and the quantum dot glass phosphor powder with different luminous positions is obtained by adjusting the reaction conditions and selecting different single-quantum dot or core-shell quantum dot materials. The matrix material provided by the invention is quartz glass, and has good heat stability; the luminescence property of the quantum dot can be well kept; the high-temperature luminous efficiency of the quantum dot can be ensured; and meanwhile, the quantum dot glass phosphor powder is simple in preparation technology, energy-saving and environmentally friendly, so that the quantum dot glass phosphor powder has a good application prospect.

The invention relates to a surface modification method of a fluoride luminescent material, and the fluoride luminescent material prepared by the method. According to the invention, a matrix material AxMFy:Mn<4+> coated with an inorganic coating layer AxMFy, and an organic solution containing metal phosphate or alkoxy silane or an organic carboxylic acid substance or organic amine, and the obtainedmixed solution is subjected to evaporation drying to obtain the surface-modified fluoride luminescent material co-coated with the organic coating layer-inorganic coating layer; according to the coating method, the corrosion resistance of the fluoride fluorescent powder is remarkably improved, the luminous intensity retention rate and the quantum efficiency retention rate of the modified fluorescent powder reaches 85-95% in a high-temperature and high-humidity environment, and the fluoride fluorescent powder can be widely applied to the field of white light LED backlight source display; afterinorganic coating, the surface defects of the fluorescent powder are reduced, and the luminous intensity and the quantum yield of the fluorescent powder are improved by 5%-15%; after coating with theorganic coating layer, the luminous intensity reducing of the fluorescent powder is less than 3%; and the surface modification method provided by the invention has the advantages that the preparationtemperature is low, the time is short, the process is easy to control, and the surface modification method is suitable for industrial large-scale preparation.

This invention discloses a kind of fluorescence wood plastic decorative board and preparing method thereof, the key technical point is adopting organic modification treated fluorescence material as luminous pigment, and adding it to wood plastic compound material, then plasticize and mix and fix pattern by mold, then the fluorescence wood plastic decorative board is got. This preparing method can solve the compatibility of inorganic luminous pigment and wood plastic, and the blackening problem of luminous pigment during wood plasticized material process, the prepared fluorescence wood plastic decorative board has even tint, good mechanical performance and luminous performance, and can be widely applied to building indoor and outdoor decoration for weak light indication and beautification.

The invention belongs to the technical field of an illuminating material and especially relates to a preparation method for a semitransparent YAG fluorescent ceramic sheet. The method comprises the following steps: uniformly mixing oxides, such as, yttria and aluminum oxide; mixing adhesive, dispersing agent and precursor and preparing into a biscuit sizing agent; in-situ curing and drying the biscuit sizing agent and then acquiring a biscuit sheet; uniformly coating the biscuit sheet on a mould utilizing a coating tool; standing, airing and then taking off; placing the biscuit sheet into a reducing atmosphere furnace for calcining for 4-7 hours under the calcining temperature at 1300-1800 DEG C, thereby acquiring the required ceramic sheet. According to the invention, the ceramic biscuit is compounded under normal temperature and normal pressure; a high temperature solid phase method is adopted for compounding the ceramic sheet; the fluorescent ceramic sheet is capable of emitting bright white light under the stimulation of 435-450nm blue light and is capable of meeting the illuminating requirement; the prepared ceramic sheet has light, thin and semitransparent characteristics.

The invention provides a modular LED lamp and a manufacture method thereof. The lamp comprises a strip-shaped base, a plurality of radiating fins and LED components, wherein the strip-shaped base comprises an installing surface and a radiating surface which are back to each other, the LED components are distributed and arranged on the installing surface; bottom edges of the radiating fins are connected to the radiating surface, wherein the width of each radiating fin is larger than that of the radiating surface, and two sides of the radiating fins extend to exceed the margin of the radiating surface. The technical scheme of the embodiment of the invention can ensure that heat produced by the LED components can smoothly and successfully radiated by the radiating fins so as to further prolong the service life of the LED components and keep better luminescence performance.

This application relates to a flexible display screen, comprising: a silicone substrate; a first electrode of polyacrylamide-lithium chloride hydrogel above the silicone substrate; a zinc sulfide-silicone light-emitting layer above the first electrode of polyacrylamide-lithium chloride hydrogel; and a second electrode of polyacrylamide-lithium chloride hydrogel above the zinc sulfide-silicone light-emitting layer.

The invention discloses an LED (light-emitting diode) long-afterglow composite light-emitting spreadlight lens. The LED long-afterglow composite light-emitting spreadlight lens comprises a lens body structure (1) and a long-afterglow light-emitting forming body (2), the lens body structure (1) is of a big-end-down convex body structure and comprises a light emitting main body part (11) on one side and an auxiliary optical part (12) on the other side, the bottom of the lens body structure (1) is concaved inwards to form a containing cavity (1A), and an accommodating groove (1B) or a wedging structure (1D) is formed in the lens body structure (1). The long-afterglow light-emitting forming body (2) is combined on the auxiliary optical part (12) through the accommodating groove (1B) or the wedging structure (1D), a transparent light guide medium (3) is arranged on the combined surface to form a light guide coupling surface (1e), and the light guide coupling surface can be combined with an LED to manufacture various light-emitting devices. One side focuses on the LED emergent light-emitting effect, so that emergent light meets the requirements of fixed-point projection or directional projection and the like of a main light beam, and the whole body has a long-afterglow light-emitting effect; and during installation, the emergent surface of the LED faces the vehicle facing surface or the road surface and the ground, so that the light guide coupling surface serves motor vehicle drivers and can further serve pedestrians and non-motor vehicle drivers.

The invention relates to a fluorescent wood-plastic external wall board. Raw materials of the fluorescent wood-plastic external wall board further include a luminous pigment, the luminous pigment is prepared by directly and physically mixing a fluorescent material subjected to organic modification treatment and then performing forming through a fusing-plasticizing device and a mouth mold or is prepared by adopting the fluorescent material subjected to organic modification treatment as a fluorescent pigment, co-extruding and mixing the fluorescent pigment and a wood-plastic wall board, adding the mixture to a lateral extrusion machine of a coextrusion machine for coextrusion with the coextrusion machine and performing plasticizing, mixing and mouth mold forming. The invention further discloses a preparation method. By the adoption of the preparation method, a surface-layer luminous wood-plastic product uniform in color and luster, good in durability and having good luminous property can be prepared, and the effects of weak light indication, decoration and beautifying are played.

The invention discloses a near-infrared quantum dot assembly structure, which is characterized in that high-light-emitting microspheres with adjustable assembly density and excellent water solubility are obtained by efficiently filling a tree-shaped silicon pore channel with near-infrared two-region PbS quantum dots. Firstly, lead chloride is used as a lead source, oleylamine is added to serve as a surface stabilizer and a solvent, and a lead precursor is obtained under inert gas and high temperature; dissolving elemental sulfur in oleylamine to obtain a sulfur precursor; and rapidly injecting the sulfur precursor into the lead precursor at a certain lead precursor temperature to obtain the oil-soluble PbS quantum dot. Secondly, preparing a central radial macroporous dendritic silicon (dSi) template by adopting a dual-surfactant method; and then, by utilizing the affinity of sulfydryl on the surface of the dSi nanosphere pore channel and the PbS quantum dots and taking dSi as an affinity template, realizing efficient assembly of the silicon pore channel from inside to outside. N-octyltrimethoxysilane/methanol/ammonia water is used as a hydrolysis system, so that silanization modification of the hydrophobic assembly is realized.

The invention belongs to the technical field of quantum dot processes, and particularly relates to a quantum dots purification method. The quantum dots purification method comprises the following steps: providing an initial quantum dot solution; under a first temperature condition, adding organic phosphorus into the initial quantum dot solution, and carrying out first mixing treatment; under a second temperature condition, adding fatty amine into the initial quantum dot solution added with the organic phosphorus, and carrying out second mixing treatment to obtain a mixed solution; and carryingout first centrifugal separation on the mixed solution to obtain a purified quantum dot solution. After the purification method is adopted to purify the initial quantum dot solution, high-purity quantum dots with original luminous efficiency can be obtained, and the quantum dots have excellent monodispersity in a non-polar solvent.

The invention relates to a sterilization, ventilation and purification technology special for elevators, in particular to a super sterilization and purification device based on a monopole rare earth material. A sterilization technology that a special electric field generates a high temperature of 10,000 DEG C within 70 ns is adopted, temperature rise of equipment is only 5 DEG C, and droplet pollution in public places is solved. Meanwhile, a monopole rare earth emission technology of an ion cloud is designed for haze coating removing and positioning, fixed-point and regular cleaning is conducted in an elevator car within the range of 70 cm, consumable-free air purification and peculiar smell treatment are achieved, and the electric field power only needs to be about 6 watts; and through natural plant resin (sandalwood), air is fragrant, and an aromatic and beautiful artistic conception is provided. The high-concentration negative oxygen ion cloud is emitted through a rare earth material electrode, and 7 million negative oxygen ions are emitted per cubic centimeter. The equipment is also provided with a new light source (the illuminance is larger than 100 lm and the color temperature is 3,800-4,200 k) which is most suitable for the illuminance and the color temperature of the elevator. The sterilization and purification device has a huge application market and can be applied toclosed indoor space and mobile space (airplanes, steamships, automobiles, elevators and the like).