Abstract: A color-adjustable luminescent powder is provided, the chemical general formula of which is (YaGdbEuc)2O3·xZn(1-m)AlmO, wherein 0?a?0.99, 0?b?0.99, 0.01?c?0.08, provided that a+b+c=1 and a and b are not 0 simultaneously; x is the molar ratio between Zn(1-m)AlmO and (YaGdbEuc)2O3, 0.01?x?0.20, and 0.001?m?0.05. A preparation method of the above luminescent powder is also provided, which comprises the following steps: adding an aqueous alcohol solution containing a complexing agent, and a surfactant to a mixed solution containing needed components to obtain a precursor solution, then aging the precursor solution, undergoing calcination treatment and cooling to obtain the said luminescent powder.

Abstract: Metal nano particles doped with silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: (Sr1-x-yAxEuy)3SiO5:Dz@Mn, wherein A is one or two selected from alkaline-earth metal elements, D is F or Cl, @ is for coating, M is one or two selected from Ag, Au, Pt, Pd or Cu metal nano particles, 0?x?0.5, 0.001<y?0.15, and 0?z?0.5. n is a molar ratio of metal nano particles to the silicon element, wherein 0<n?0.01. Compared to the luminescent materials in the art, the said luminescent materials have higher internal quantum efficiency, luminous intensity and stability, therefore they are appropriate to be used in coating technique and improve the visual effect.

Abstract: A field emission device for emitting white light is provided. The device includes a cathode plate assembly (1), an anode plate assembly (2) which is opposite to and spaced from the cathode plate assembly (1), and a supporting body (3) for tight coupling the cathode plate assembly (1) with the anode plate assembly (2). The anode plate assembly (2) includes a transparent substrate (203) which can emit yellow light when excited by blue light. An anode (202) and a blue cathode ray luminescent material layer (201) are provided on the surface of the transparent substrate (203). The blue cathode ray luminescent material layer (201) contains blue cathode ray luminescent material.

Abstract: A field emission flat light source and a manufacturing method thereof are provided. The field emission flat light source includes an anode (110), a cathode (120), a light guide plate (130) and a separation body (140). The anode (110) and the light guide plate (130) are separated by the separation body (140). The cathode (120) is provided in the contained space (150) formed by the anode (110), the light guide plate (130) and the separation body (140). The anode (110) includes an anode substrate (112), a metal reflective layer (114) provided on the anode substrate (112) and a light emitting layer (116) provided on the metal reflective layer (114). The cathode (120) includes a cathode substrate (122) and an electron emitter (124) provided on the surface of the cathode substrate (122). The thermal conductivity of the field emission flat light source is improved. The field emission flat light source is applied to the field of the liquid crystal display or the illumination light.

Abstract: A silicate fluorescent material is provided. The general chemical formula of the luminescent material is Ln2SiO5:Tb, M, wherein Ln represents at least one of the elements selected from Y, Gd, La or Lu, M represents at least one of the nanoparticles selected from Ag, Au, Os, Ir, Pt, Ru, Rh or Pd, the mole ratio of Tb to Ln is greater than 0 but not greater than 0.25. The porous glass containing metal nanoparticles is prepared by introducing metal nano ions into the porous glass and extracting the uniformly dispersed metal nanoparticles from the porous glass via a chemical reduction method. A silicate fluorescent material with enhanced luminescence is obtained by substituting SiO2 which is the raw material in the process for preparing the silicate fluorescent material via the conventional high temperature solid phase sintering with the porous glass containing metal nanoparticles.

Abstract: A white light emitting glass-ceramic. The chemical formula of the glass-ceramic is aSiO2.bAl2O3.cNaF.dCeF3.nDyF3.mAg, wherein a, b, c, d, n and m are, by mol part, 25-50, 15-30, 10-30, 10-25, 0.01-1 and 0.01-1, respectively, and a+b+c+d-100. A method for producing said glass-ceramic is also provided. Silver ion is doped in the glass-ceramic in the form of silver particles by means of sintering and reduction annealing treatment, and thus the luminescence properties of rare earth ion is improved.

Abstract: A preparation method of the fluorescent powder layer (108, 208) is provided.

Abstract: Oxide luminescent materials and preparation methods thereof are provided. The said luminescent materials are represented by the general formula: aRe2O3.bSiO2.cEu2O3.dM, wherein Re is at least one selected from Gd and Y, M is selected from metal nano-particles, (a+c):b=0.5-5, d:b=5×10?5-5×10?3, c:(a+c)=0.02-0.1. Compared to the oxide luminescent materials in the art, the said luminescent materials have higher luminescent intensity.

Abstract: A preparation method of rare earth ions doped alkali metal silicate luminescent glass is provided. The steps involves: step 1, mixing the source compounds of cerium, terbium and alkali metals and putting the mixture into solvent to get a mixed solution; step 2, impregnating the nanometer micropores glass with the mixed solution obtained in step 1; step 3: calcining the impregnated nanometer micropores glass obtained in step 2 in a reducing atmosphere, cooling to room temperature, then obtaining the cerium and terbium co-doped alkali metal silicate luminescent glass. Besides, the rare earth ions doped alkali metal silicate luminescent glass prepared with aforesaid method is also provided. In the prepared luminescent glass, cerium ions can transmit absorbed energy to terbium ions under the excitation of UV light due to the co-doping of cerium ions. As a result, the said luminescent glass has higher luminous intensity than the glass only doped with terbium.

Abstract: A borate based red light emitting material is provided, which comprises a core and a shell covering the said core. Said core is nanometer metal particle, and the shell is fluorescent powder having the chemical formula of (Y1-x-yEuxGdy)BO3, wherein 0<x?0.3, 0?y?0.7. The material has the advantages of uniform particle size, structure stability, excellent luminous intensity and luminous efficiency. The preparation method has a simple process, low demand on equipment and no pollution. The method is easily controllable for the reaction, material morphology and particle size, and suitable for industrial production.

Abstract: Silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: M2aM3bSicO[a+3(b+x)/2+2c]:xCe3+, yM0, M2 is at least one selected from Ca, Sr, Ba, Mg and at least contains Ca, M3 is Sc, Sc and Y, M0 is one selected from metal nano particles of Ag, Au, Pt, Pd or Cu, wherein 2.8?a?3.2, 1.8?b?2.1, 2.9?c?3.3, 0.01?x?0.2 and 1×10?4?y?1×10?2. Compared to the luminescent materials in the prior art, the said luminescent materials have higher luminous efficiency and more stable performance and structure. The said methods have simple technique and low cost, therefore are appropriate to be used in industry.

Abstract: The present invention relates to a luminescent glass element comprising a luminescent glass substrate, which a metal layer is positioned on a surface thereof. The metal layer is provided with a metal microstructure. The luminescent glass substrate has composite oxides represented as the following formula: aM2O.bY2O3.cSiO2.dDy2O3, wherein M represents alkali metal element, a, b, c and d are, by mol part, 25-60, 1-30, 20-70 and 0.001-10 respectively. The present invention also provides a producing method of the luminescent glass element and a luminescing method thereof. The metal layer is positioned on the luminescent glass substrate, thereby improving luminescence efficiency of the luminescent glass substrate. The luminescent glass element can be used in luminescent devices with ultrahigh brightness or high-speed operation.

Abstract: A method for producing core-shell magnetic alloy nanoparticle, comprising: step 1, dissolving nickel compound to produce solution; step 2, adding surfactant into the solution; step 3, dissolving the first reducing agent to produce the first reducing solution; step 4, adding the first reducing solution into the solution obtained from step 2, obtaining nickel nano-collosol by stirring and aging; step 5, adding metallic compound into the nickel nano-collosol; step 6, dissolving the second reducing agent to produce the second reducing solution; step 7, adding the second reducing solution into the mixed solution obtained from step 5; step 8, allow the product to stand, then discarding the supernatant, redispersing in water or absolute ethyl alcohol to obtain the core-shell magnetic alloy nanoparticle using nickel as the core.

Abstract: Disclosed is a strontium cerate luminescent material having a chemical formula of Sr2CeO4:xM and comprising the luminescent material Sr2CeO4 and metal nanoparticle M, and the preparation method thereof, where M is at least one of Ag, Au, Pt and Pd, and x is a molar ratio of M to the luminescent material Sr2CeO4 and 0<x?1×10?2. The strontium cerate luminescent material of the present invention, through doping the luminescent material with metal particles, improves luminous intensity of the luminescent material by making use of the surface plasmon resonance generated by surface of the metal particles; besides, the doped metal ion can improve electrical conductivity of the luminescent material, and guarantee that the luminescent material has higher brightness in field emission devices or LEDs. The preparation method of the present invention has the advantages of simple operation, no pollution, easy control, low requirements for equipment, and being favorable to industrialized production.

Abstract: Fluorescent materials and preparation methods thereof are provided. The fluorescent materials are represented by the general formula: Y2O3: Re, M, Zn1-xAlxO, wherein Re is at least one selected from Eu and Tb, M is at least one selected from Ag, Au, Pt and Pd in the form of nano-particle, and 0<x?0.05. The said methods include the following steps: step 1, preparing a colloid of Zn1-xAlxO; step 2, preparing a colloid of Y and Re containing the metal element M; step 3, mixing the colloid of Zn1-xAlxO with the colloid of Y and Re, aging and heating treatment to form the fluorescent materials. Compared to the Y2O3 fluorescent materials in the art the present fluorescent materials have higher luminescence efficiency, conductivity, long life and industrial applicability.

Abstract: Provided is a fluorescent powder of halogen-silicate containing nano-metal particles with the formula of CaX2.y(Ca1-a-bEuaMnbO).SiO2:zM, wherein X is fluorin or/and chlorine, y is 1 or 2, z is molar ratio of nano-metal particles and fluorescent powder CaX2.y(Ca1-a-bEuaMnbO).SiO2, 0<z1×10?2, 0<a0.3, 0b0.3. The method for preparing the fluorescent powder is also provided. For the surface plasma resonance effect occurring on the surface of the nano-metal particles, the fluorescent powder has stronger luminous intensity. The preparation method is simple to operate, no pollution, easy to control, easy to produce in industry, and can be widely used in the preparation field of fluorescent powder.

Abstract: A luminescent material of silicate is provided. The luminescent material has a formula of Ln2-x-ySiO5:Cex,Tby,Agz, wherein, Ln is one of Y, Gd, La and Lu, 0<x-0.05, 0.01y0.25, 0<z0.005. The method for preparing the luminescent material comprises the following steps: weighing the source compounds of Ln, Ce, Tb, Ag and silica aerogel; dissolving the silica aerogel in the alcoholic solution of the source compound of silver, stirring, drying and sintering to obtain silica aerogel containing Ag; after mixing the weighed source compounds of Ln, Ce, Tb and the silica aerogel containing Ag, sintering under reducing atmosphere to obtain the luminescent material of silicate.

Abstract: Silicate luminous material and preparation method thereof are provided. The luminous material is represented by the following chemical formula: Zn2?xSiO4:Mnx@SiO2@My, wherein M represents at least one element selected from the group consisting of Ag, Au, Pt, Pd and Cu, and y is molar ratio of M to Si in silicate luminous materials, and 0<x?0.2, 0<y?1×10?2. @ is coating; M is inner core; SiO2 is middle shell; Zn2?xSiO4:Mnx is outer shell. The core-shell luminous materials coating metal particle improve internal quantum efficiency, increase luminous intensity, and they are stable. The luminous materials can be controlled in the aspects of size and appearance and are appropriate to be used in coating screen process and improving display effect for sphere appearance with bulk density. Precipitation methods can not only decrease reaction temperature, but also have features of simple process, low equipment requirement, non-pollution and are controlled easily.

Abstract: Disclosed is a halogen silicate luminescent material having a chemical structural formula of (N1-a-bEuaMnb)10Si6O21Cl2:xM, and the preparation method thereof, where M is at least one of Ag, Au, Pt and Pd, N is an alkaline earth metal and specifically at least one of Mg, Ca, Sr and Ba, 0<x?1×10?2, 0<a?0.3, and 0?b?0.3.

Abstract: A luminescent material and a preparation method thereof are provided. The said luminescent material is represented by the following chemical formula: Ln2?EuxSn2O7, wherein Ln is selected from one of Gd, Y and La, 0.1?x?1.5. The said luminescent material has good electrical performance, anti-electron bombardment and stable luminescent property. It is appropriate to be used in field emission light-emitting devices. The said preparation method has simple technique, no pollution, manageable process conditions, low preparation temperature and low equipment requirement, and is beneficial to industry production.