33results about How to "Enhance the quantum effect" patented technology

The invention provides an aqueous inorganic zinc rich paint, which is prepared by mixing a component A with a component B according to a weight ratio of 4:1, wherein the component A comprises 30-32% of 500-mesh spherical / flaky zinc powder, 30-32% of 800-mesh spherical / flaky zinc powder, 30-32% of 1250-mesh spherical / flaky zinc powder, 6-8% of nanometer cerium dioxide and 2-4% of 800-mesh talcum powder; and the component B comprises 38-50% of potassium silicate, 10-20% of lithium silicate, 8-10% of potassium titanate whiskers, 5-12% of aqueous self-drying organic silicon modified acrylic resin, 0.2-0.5% of defoaming agent, 0.5-1% of wetting agent and 12-20% of water. The aqueous inorganic zinc rich paint provided by the invention has the characteristics of excellent corrosion resistance, physical and mechanical properties, wet resistance, high temperature resistance and strong construction adaptability.

The present invention provides an LED package, at least comprising: a bracket, a chip, a bonding wire, and a sealing member, the bracket is used to support the chip and the bonding wire; the chip is used to emit light that can effectively excite phosphors or quantum dots light; the bonding wire is used to conduct the wafer and the support; quantum dots are distributed inside the sealing member, located in the path of light emitted from the wafer and having a lens shape, for wrapping the wafer and the support The sealing part has four layers, which are carrier, fluorescent powder mixed with carrier, quantum dot mixed with carrier, carrier or a layer of sealing colloid that hinders air moisture from inside to outside. The LED package of the present invention can control the emission spectrum of the quantum dot by changing the size of the quantum dot; it has good photostability; it has a wide excitation spectrum and a narrow emission spectrum, effectively improving the color rendering index of the LED; luminous efficiency relatively high.

The invention discloses a nitride light-emitting diode. The nitride light-emitting diode sequentially comprises a substrate, N type nitride, a multi-quantum well, V-shaped pits, first AlN / AlxGa1-xN superlattices, local area quantum states formed by In quantum dots / InN quantum dots, a composite structure formed by second AlN / AlxGa1-xN superlattices, P type nitride and a P type contact layer, the first AlN / AlxGa1-xN superlattices, the local area quantum states formed by the In quantum dots / InN quantum dots and the composite structure formed by the second AlN / AlxGa1-xN superlattices are deposited in the V-shaped pits of the multi-quantum well, an upper AlN / AlxGa1-xN superlattice structure and a lower AlN / AlxGa1-xN superlattice structure in each V-shaped pit block dislocation in the corresponding V-shaped pit and stop the dislocation from continuing extending upwards, dislocation is effectively reduced, nonradiative recombination is lowered, electric leakage is reduced, ESD is improved, and light-emitting efficiency and intensity are improved; by means of the mixed local area quantum state formed by the In quantum dots / InN quantum dots between the two superlattice structures, the quantum effect of the quantum well is improved, and light-emitting efficiency and intensity are further improved.

The invention provides a novel composite photocatalyst Ag-TiO2 / SBA-16 (Santa Barbara USA-16) and a synthesis method thereof, relates to a novel composite photocatalyst and a synthesis method thereof, and aims to solve the problems of low solar utilization, low quantum efficiency, poor adsorption performance, easiness in agglomeration inactivation and difficulty in reclamation of TiO2. The novel composite photocatalyst Ag-TiO2 / SBA-16 is prepared from butyl titanate, AgNO3, absolute ethanol, acetic acid, ethyl acetate and a mesoporous molecular sieve SBA-16. The synthesis method of the novel composite photocatalyst Ag-TiO2 / SBA-16 comprises the following steps: 1, dissolving; 2, uniformly mixing; 3, adding a vector; 4, washing and drying; and 5, roasting. The method is mainly used for synthesizing the novel composite photocatalyst Ag-TiO2 / SBA-16.

The invention relates to a magnetic tunnel junction with a quantum effect, and a spin diode and a spin transistor comprising the magnetic tunnel junction. The magnetic tunnel junction comprises a first reference layer, a first barrier layer, a free layer, and a second barrier layer, wherein the first reference layer is formed by a magnetic conductive material and has a fixed magnetizing direction; the first barrier layer is arranged on the first reference layer and formed by an insulating material; the free layer is arranged on the first barrier layer, and formed by a magnetic conductive material, and the magnetizing direction of the free layer can respond to an outer magnetic field to be freely changed; and the second barrier layer is arranged on the free layer and formed by an insulating material, wherein the insulating materials of the first barrier layer and the second barrier layer both comprise a spinel-like crystal structure.

The invention discloses a cerium-doped nano titanium dioxide / activated carbon fiber composite photocatalyst for air purification and a preparation method thereof. The preparation method comprises the following steps: doping cerium nitrate into nano titanium dioxide to obtain the cerium-doped nano titanium dioxide suspension, putting proper amount of activated carbon fiber into the suspension, soaking for 20-60 minutes under ultrasonic conditions, taking out, airing, and keeping the temperature at 200-220 DEG C for 2-4 hours, thereby obtaining the cerium-doped nano titanium dioxide / activated carbon fiber composite photocatalyst for air purification. Compared with the prior art, the rare-earth cerium is doped into the nano titanium dioxide, thereby prolonging the service life of photovoltaic electron-hole pairs, enhancing the quantum effect of the nano titanium dioxide, and further enhancing the photocatalytic activity of the nano titanium dioxide; and the whole method is simple and easy to control; and the product prepared by the method has high degradation efficiency for volatile organic pollutants, especially formaldehyde gas, reaching more than 90%.

The invention relates to a method using a low temperature carbothermic method to prepare a solid solution of nanometer calcium oxide based rare earth mixed with composite oxide. The method has the technical proposal that 0.25M to 0.5M of Ca(NO3)2, 0.5M to 1.0M of rare earth nitrate and 0.625 M to 1.25M of CaAC2 solution are prepared, and the same amount of solution is taken to be well mixed; distilled water is added, and the solution is further dissolved and well mixed; the solution is heated to 140 DEG C to 160 DEG C with an electric jacket, and after self-propagating combustion happens to release large amounts of brown gas and generate fluffy powder, a proper amount of precursor powder is weighted to be put into a porcelain boat; after the proper amount of precursor powder is calcined for 1 to 2 hour(s) at 750 DEG C to 900 DEG C with a muffle furnace, the solid solution of nanometer calcium oxide based rare earth mixed with composite oxide is obtained. In the invention, a new synthetic route and technology is adopted, thereby the method has the advantages of comparatively lower cost, simple technology, mild conditions, short experimental period and time and energy conservation. Simultaneously, utilizing the analysis of a modern instrument can indicate that the synthesized solid solution of nanometer calcium oxide based rare earth mixed with composite oxide is provided with a nanometer structure, and the size is uniform, thereby providing possibility for improving the application in the field of tail gas treatment and environmental friendly plastics.

The method to epitaxial grow magnesia nano line on single crystal substrate of strontium titanate relates to micro-electronics material field particular to the application on hetero epitaxy center nano line and its periodic surface structure of oxide (magnesis)-composite oxide (strontium titanate). Wherein, on vacuum condition, taking thermal treatment to the said substrate to strip with laser the magnesia ceramics material and depositing the laser plasma on the substrate to obtain magnesia thin membrane; monitoring the depositing process till forming said nano line. The product has special properties on optical, electric, magnetism, chemistry.