72results about How to "Pure chroma" patented technology

The invention discloses a molybdate up-conversion luminescent material, a preparation method and application thereof. The structural formula of the molybdate up-conversion luminescent material is ZnR(4-4(x+y))Mo3O16:4xEr<3+>,4yYb<3+>, wherein x and y are the mole percent of doped Er<3+> and Yb<3+> respectively, xis more than or equal to 0.0001, y is more than or equal to 0.1, and x+y is larger than 0.1 and smaller than 1.0. According to the molybdate up-conversion luminescent material, the Yb<3+> is taken as a sensitized ion, so that the up-conversion luminescence of the Er<3+> is achieved; the excitation wavelength is 970 nanometers; a luminescent peak is formed through the energy level transition <2>H(11 / 2)-<4>I(15 / 2), <4>S(3 / 2)-<4>I(15 / 2), <4>F(9 / 2)-<4>I(15 / 2) of the Er<3+> within the wavelength range of 500-700 nanometers. The molybdate up-conversion luminescent material prepared by adopting a high-temperature solid phase method or a chemical synthesis method is high in color purity and stable in property and can be applied to the fields of counterfeiting prevention, biological molecule fluorescence labeling, three-dimensional display and the like.

The method includes steps of vacuum depositing following layer by layer: (1) vacuum depositing a layer of material for holes transport and luminescence capable of generating electricity excitated association object; (2) vacuum depositing a layer of material for electrons transport and luminescence; (3) vacuum depositing a layer of cavity barrier material and a layer of electrons transport material; (4) vacuum depositing a layer of cathode. The disclosed white light OLED possesses features: quite pure chroma, color coordinate closed to pure white light, higher brightness, and luminous efficiency, and suitable color temperature for requirement of illumination. Selecting suitable material for super thin electrons transport and luminescence, the invention adjusts color of luminescence so as to obtain pure white light.

The invention discloses a brewing method of kiwi fruit wine. The brewing method comprises the following steps: (1) pretreating kiwi fruits; (2) pretreating pomegranate fruits; (3) preparing fruit pulp; (4) fermenting to obtain kiwi fruit wine; (5) preparing kiwi fruit alcoholic drink rich in fruity flavor; (6) adjusting the alcohol content; and (7) mixing to prepare the kiwi fruit wine. The brewing method provided by the invention is simple in technology and strong in operability, the produced kiwi fruit wine is high in yield. The obtained kiwi fruit wine is good in mouthfeel and pure in color, is clear, transparent and chartreuse, has the nutrition of kiwi fruits and pomegranate fruits, and is unique in flavor, and strong in fruity flavor.

The invention relates to a vanadium-barium tungstate self-activation luminescent material, preparation methods and application. The luminescent material has a chemical formula of Ba3W1-xMoxV1-yPyO8.5, wherein 0<=x<=0.5 and 0<=y<=0.5. The luminescent material is prepared by respectively employing a high-temperature solid phase method and a solution method; the production cost and equipment requirement are low; and the prepared product has good color-rendering performance and stable luminescent performance, and is easy to operate and easy for industrialized production. The prepared material emits blue-green fluorescence with a main wavelength of 500 nm under the excitation of ultraviolet light, is widely applied to the fields of illumination and display; under excitation of X ray, the prepared material has high light output and fast attenuation, shows excellent scintillation luminescence performances, and is applicable to medical science fields such as positron emission tomography, X-ray computed tomography, X-ray fluorescence intensifying screen and the like, and other high-energy ray detection imaging technical fields.

The invention relates to a preparation method for yellow fluorescent powder doped with manganese zinc silicate. The invention relates to a fluorescent powder, in particular to a method for preparing the yellow fluorescent powder doped with the manganese zinc silicate through the thermal reaction of low-temperature mixed solvent. The invention provides the method for preparing the yellow fluorescent powder doped with the manganese zinc silicate. The prepared yellow fluorescent powder doped with the manganese zinc silicate is characterized by small and even grain size, large specific surface area, stable performance, and the like. The chemical general expression is Zn2-xMnxSiO4, wherein x is more than or equal to 0.01 and less than or equal to 0.10. The method comprises the following steps:preparing an aqueous solution of zinc salt, manganese salt and sodium hydroxide; weighing nanometer silicon dioxide powder and the solution of zinc salt and manganese salt according to the stoichiometric ratio in the chemical general expression Zn2-xMnxSiO4, adding organic solvent, hydrazine hydrate and sodium hydroxide solution, and then dispersing the solution into suspension through ultrasonicwave; placing the suspension in a reaction kettle for reaction, and obtaining the yellow fluorescent powder doped with the manganese zinc silicate.

The invention discloses a green fluorescent ceramic material, a preparation method and an application thereof, the chemical formula of which is Ca 10‑10x Tb 10x Si 3 o 15 f 2 , where x is Tb 3+ The stoichiometric fraction of doping, 0.001≤x≤0.20, belongs to the technical field of inorganic luminescent materials. The fluorescent ceramic material prepared by the present invention can be excited by ultraviolet light near 200-380 nanometers, which is very consistent with the emission wavelength of the near-ultraviolet LED chip. Under the excitation of near-ultraviolet light, the fluorescent ceramic can emit bright green fluorescence. The wavelength is mainly 550nm; the obtained fluorescent ceramic material has high luminous efficiency and good chemical stability, and will not produce toxic gases such as sulfide under ultraviolet radiation. Compounds containing elements required for synthesizing biological materials are mixed in proportion, and then calcined by hot pressing. The process is simple, free of any pollution, friendly to the environment, and suitable for industrial production.