48results about How to "Wide excitation wavelength" patented technology

Novel two-phase yellow phosphors are disclosed having a peak emission intensity at wavelengths ranging from about 555 nm to about 580 nm when excited by a radiation source having a wavelength ranging from 220 nm to 530 nm. The present phosphors may be represented by the formula a[Sr_x(M1)_1-x]_zSiO₄●(1-a)[Sr_y(M2)_1-y]_uSiO₅:Eu²⁺D, wherein M1 and M2 are at least one of a divalent metal such as Ba, Mg, Ca, and Zn, the values of a, x, y, z and u follow the following relationships: 0.6≦a≦0.85; 0.3≦x≦0.6; 0.85≦y≦1; 1.5≦z≦2.5; 2.6≦u≦3.3; and Eu and D each range from 0.001 to about 0.5. D is an anion selected from the group consisting of F, Cl, Br, S, and N, and at least some of the D anion replaces oxygen in the host silicate lattice of the phosphor. The present yellow phosphors have applications in high brightness white LED illumination systems, LCD display panels, plasma display panels, and yellow LEDs and illumination systems.

The invention belongs to the technical field of luminescent materials, and in particular relates to a wideband ultraviolet-visible light exited near infrared fluorescent emitting material and a preparation method and application thereof. The preparation method comprises steps of: mixing oxides of Y<3+>, Al<3+>, Bi<3+>, La<3+> and Yb<3+>, H3BO3 and a Cr salt according to the constitution ratio of all the elements in a formula Y1-x-zMzAl3-y(BO34):Crx<3+>, Yby<3+>, wherein M is one or two of Bi<3+> and La<3+>, and 0<x<=0.2, 0<y<=0.2, and 0<=z<=0.2; adding absolute ethyl alcohol, grinding and drying; and heating the mixed power to be 1000 DEG C-1400 DEG C, and sintering for 3-8 hours. The excitation wavelength of the luminescent material is 350nm-650nm, and the luminescent material can better utilize solar energy and is an ideal near infrared conversion material for increasing the effect of silicon solar cells.

The invention belongs to the technical field of temperature sensors and provides a temperature sensor based on microstructure fibers, the manufacturing method of the temperature sensor, and a temperature measuring device. The temperature sensor comprises at least two microstructure fibers, wherein every two adjacent microstructure fibers are connected in series through a multimode fiber. For a fiber core and a cladding of each microstructure fiber, air holes distributed in the axial direction are formed in the cladding at least. Quantum dot materials are arranged in the air holes. The wavelength of fluorescent light emitted by the quantum dot materials in a microstructure fiber is different from the wavelength of fluorescent light emitted by the quantum dot materials in another microstructure fiber. Compared with ordinary fluorescent materials, the quantum dots have the advantages of being large in excitation wavelength, adjustable in fluorescent wavelength, stable in fluorescent intensity and the like. By adding quantum dots in different types and sizes into the microstructure fibers, the microstructure fibers can be distinguished in a wavelength domain according to the fluorescent wavelengths, and quasi-distributed sensing is realized.

The invention relates to fluorescent powder based on ultraviolet light or blue light excitation, a preparation method thereof and application thereof, and relates to a fluorescent material in the technical field of luminescence. By providing the fluorescent powder, the problem of low luminescent efficiency due to reabsorption among different kinds of fluorescent powder in the process of manufacturing white light-emitting diodes (LED) by a process for mixing the fluorescent powder in the prior art is solved. The fluorescent material has a chemical formula (M3-xMnx)(R2-yCey)(Si,GE)3O12, whereinM is at least one of Mg, Ca, Sr, Ba or Zn; R is at least one of Sc, Y, La, Gd or Lu; and x and y are molar fractions, x is more than or equal to 0.01 and less than or equal to 1, and y is more than or equal to 0.0001 and less than or equal to 0.5. After being ground and mixed uniformly, the fluorescent material is put into a crucible and is put into a high-temperature furnace under the condition of reduction atmosphere to obtain the fluorescent powder. The fluorescent powder can be used as single fluorescent powder to manufacture the white LED, and is high in luminous intensity and chemical stability.

This invention relates to white light LED and its manufacturing mehtod, in which, a blue light LED chip is put at the bottom of a base board cavity filled with luminophors containing transparent gluewater, yellow fluorescent powder generating 555nm by excitation and orange fluorescent powder generating 590nm by excitation and three of which are mixed uniformly in a certain proportion and put into the cavity and dried to become a LED of white light. The method includes: after yellow and orange fluorescent powder is matched and mixed uniformly, they are coated on a LED chip of blue light, which can increase brightness and evolution suitable for LED street lamps.

The invention discloses a novel bimodal (magnetic/fluorescent) integrated molecular image probe and a preparation method. The preparation method for the molecular image probe comprises the following steps of: adding a carbon nanometer material into mixed solution of hydrogen peroxide and ammonia water, and reacting to obtain solution containing the magnetic/fluorescent bimodal molecular image probe; centrifuging to remove insoluble substances and concentrating; and adding ethanol into concentrated solution, oscillating to generate a large number of precipitates, collecting the precipitates, washing by using the ethanol, and drying to obtain the magnetic/fluorescent bimodal molecular image probe, wherein the carbon nanometer material may be one of metal-embedded fullerene, hollow fullereneand oxidized graphene. In the method, the intervention of an organic solvent is saved, intermediate products are not needed to be separated, conditions of water, oxygen and the like are saved, and the preparation method has the advantages of simplicity, economy, environment friendliness and the like.

The invention belongs to the technical field of near-infrared light-emitting materials, particularly relates to a near-infrared light-emitting material, and further discloses a preparation method of the near-infrared light-emitting material and a light-emitting device containing the light-emitting material, wherein the near-infrared light-emitting material comprises an inorganic compound with a composition of MaAb(QO3)c:zZ, the excitation wavelength of the compound is 350-750nm, the emission main peak of the near-infrared region is broadband or multispectral emission at 700-1700 nm, the excitation wavelength is broad, and the compound can well absorb ultraviolet light, blue light and red light, has broadband or multispectral emission (700-1700 nm) in a near-infrared region, is adjustable and controllable in spectral range, has wide or more spectral line emission compared with red light with a peak wavelength of 700-1700 nm and near-infrared chips, and has wider application.

This invention relates to a fluorescent powder which can emit red light by the radiation of ultraviolet light and blue light LED, with the general formula AMaOb:Mnx,Ry, wherein A is the combination of 1-3 elements of Mg, Ca, Sr, Ba, and Zn; M is the combination of 1-3 elements of Al, Ga, Y, and Gd; R is the combination of 1-3 elements of Ce, Pr, Nd, Sm, Td, Dy, Ho, Er, Tm and Cu; 0.9 C09K 11/78 H05B 33/14 2 9 1 2005/6/14 1880404 2006/12/20 000000000 Dalian Luming Light Science & Technology Co., Ltd. Dalian 116025 Liu Lifang Xia Wei Yu Jingjie Luo Xixian Xiao Zhiguo

The invention discloses a time resolution fluorescent immunochromatographic test strip for detecting butralin, and a preparation method and application thereof. The time resolution fluorescent immunochromatographic test strip comprises a bottom plate and further comprises a sample absorbent pad, a combination releasing pad, a nitrocellulose membrane and a water absorbent pad which are lapped and pasted on the bottom plate in sequence. A butralin monoclonal antibody labelled by fluorescent microspheres is embedded into the combination releasing pad, and a detecting area and a quality control area are fixed to the nitrocellulose membrane. A butralin antigen-carrier protein conjugate is sprayed in the detecting area, and an anti-sheep and anti-mouse antibody is sprayed in the quality controlarea. A butralin antigen is obtained in the mode of reacting of 4-chlorine-3,5-binitro phenylacetic acid with butyl amine. The invention further provides the preparation method of the test strip and amethod for detecting the butralin in samples through the test strip. The time resolution fluorescent immunochromatographic test strip and the detecting method provided by the invention have the advantages that operation is easy, sensitivity is high, the detecting speed is high, and the cost is low, and the butralin in the large-batch samples can be detected quaickly and monitored on site.

The invention discloses a Mn4<+>-doped double alkali metal compound fluotitanate red-light-emitting material and a preparation method thereof. The chemical composition of a fluorescent powder materialis NaBTiF6: xMn4<+>, wherein B is any one of Li|, K, Rb and Cs, and x is the molar ratio of Mn4<+> ions relative to Ti4<+> ions: 0.5-10 mol/%. The preparation method comprises the following steps: bytaking a double alkali metal fluoride and tetrabutyl titanate Ti(OR)4 as a matrix raw material, providing a light-emitting center by K2MnF6; carrying out a reaction by stirring the mixture in a roomtemperature condition; and carrying suction filtration, washing and drying to obtain a product. The maximum excitation wavelength of the product is at 467 nm of a blue light region and is fully matched with blue light emitted by a gallium nitride chip, the emission wavelength range of the product is in a 600-660 nm spectral region, and the color purity is high. The preparation method disclosed bythe invention is simple to operate, mild in reaction condition and suitable for industrial production on a large scale.

A near-infrared light-emitting material and a light-emitting device comprising the light-emitting material are disclosed. The light-emitting material comprises an inorganic compound of the formula QqRrAltSiuNv, wherein Q is selected from one or more of Cr, Eu, Yb and Nd, and must contain the Cr element, R is one or two of Ca, Sr, Ba, and Mg, and 0 < q <= 0.1, 0.8 <= q + r <= 1.2, 0.8 <= t <= 1.2,0.8 <= u <= 1.2, and 2.4 <= v <= 3.6. The inorganic compound has the same crystal structure as CaAlSiN3. The near-infrared light-emitting material can be efficiently emitted in a near-infrared region,and is an ideal near-infrared light-emitting material. The light-emitting device containing the light-emitting material can be widely applied to the fields of near-infrared short-wave detection, medical treatment, and the like.

The invention discloses a time resolution fluorescent immunochromatographic test strip for detecting pendimethalin, and a preparation method and application thereof. The time resolution fluorescent immunochromatographic test strip comprises a bottom plate, a sample absorbent pad, a combination absorbent pad, a nitrocellulose membrane and a water absorbent pad. A pendimethalin monoclonal antibody labelled by fluorescent microspheres is embedded into the combination absorbent pad, and a detecting area and a quality control area are fixed to the nitrocellulose membrane. A pendimethalin hapten-carrier protein conjugate is sprayed in the detecting area, and an anti-sheep and anti-mouse antibody is sprayed in the quality control area. A pendimethalin hapten is obtained in the modes that N-(1-ethyl propyl ether)-3,4-methyl toluidine and 4-bromo-butyric acid ethyl ester react to generate hydrocarbylation N-(1-ethyl propyl ether)-3,4-methyl toluidine, then the hydrocarbylation N-(1-ethyl propylether)-3,4-methyl toluidine reacts with concentrated nitric acid to generate nitro hydrocarbonylation N-(1-ethyl propyl ether)-3,4-methyl toluidine, and then the nitro hydrocarbonylation N-(1-ethyl propyl ether)-3,4-methyl toluidine reacts with KOH. The time resolution fluorescent immunochromatographic test strip and a detecting method provided by the invention have the advantages that operationis easy, sensitivity is high, the detecting speed is high, and the cost is low.

The invention relates to a YAB/SiO2 near-infrared micro-nano luminescent material and a preparation method and application thereof. The chemical formula of the near-infrared micro-nano luminescent material is Y[1-y-z]MzAl[3-x](BO3)4:Crx, Yby, wherein M is selected from one or two of Bi and La, x is larger than 0 and smaller than or equal to 0.2, y is larger than 0 and smaller than or equal to 0.2, and z is larger than 0 and smaller than or equal to 0.2. In addition, the invention further relates to luminescence conversion EVA film containing the YAB/SiO2 near-infrared micro-nano luminescent material and a preparation method and application of the film. The YAB/SiO2 near-infrared micro-nano luminescent material is light gray, strong absorption is achieved in an ultraviolet region, the excitation wavelength ranges from 350 nm to 650 nm, and the emission spectrum ranges from 950 nm to 1100 nm. The luminescence conversion EVA film used for photovoltaic cells can better utilize solar energy, improve the light transmissivity of the EVA film and the cell efficiency by 0.5%-1.0% and further improve the aging performance of the EVA film.

The invention discloses a time resolution fluorescent immunochromatographic test strip for detecting metalaxyl, and a preparation method and application thereof. The time resolution fluorescent immunochromatographic test strip comprises a bottom plate and further comprises a sample absorbent pad, a combination releasing pad, a nitrocellulose membrane and a water absorbent pad which are lapped andpasted on the bottom plate in sequence. A metalaxyl monoclonal antibody labelled by fluorescent microspheres is embedded into the combination releasing pad, and a detecting area and a quality controlarea are fixed to the nitrocellulose membrane. A metalaxyl hapten-carrier protein conjugate is sprayed in the detecting area, an anti-sheep and anti-mouse antibody is sprayed in the quality control area, and a metalaxyl hapten is obtained in the modes that N-(2,6-dimethyl phenyl) alanine methyl ester reacts with (4-nitrophenoxy) acetylchloride to generate nitrobenzene metalaxyl, and then the nitrobenzene metalaxyl is subjected to zinc powder reduction. The time resolution fluorescent immunochromatographic test strip and a detecting method provided by the invention have the advantages that operation is easy, sensitivity is high, the detecting speed is high, and the cost is low, and the metalaxyl in large-batch samples can be detected quickly and monitored on site.

The invention discloses a preparation technique of self-cleaning and mildew-proof bathroom glass, bathroom-dedicated glass is used as a base plate, and a spray filming method is adopted to prepare the self-cleaning and mildew-proof bathroom glass, the preparation technique comprises the following steps: cleaning the glass, spraying and filming, drying the film and heat-treating the film. According to the development and industrialization of the self-cleaning and mildew-proof bathroom glass provided by the preparation technique, not only can a healthy and beautiful living space can be created for people, but also more unnecessary resource waste can be reduced, the service life of the bathroom glass can be prolonged, and the preparation technique has important social benefits, economic benefits and environmental benefits.

The invention discloses a time-resolved fluorescence immunochromatographic test strip for detecting quinclorac, and a preparation method and an application thereof. The test strip comprises a bottom plate, and a sample absorption pad, a conjugate release pad, a nitrocellulose membrane and a water absorption pad which are sequentially lapped and pasted on the bottom plate; the conjugate release padis buried with a fluorescent microsphere-labeled quinclorac monoclonal antibody; a detection area and a quality control area are fixed on the nitrocellulose membrane; the detection area is coated with a quinclorac hapten-carrier protein conjugate; the quality control area is sprayed with a goat anti-mouse anti-antibody, wherein the quinclorac hapten obtained by the steps of enabling quinclorac tobe reacted with (1, 3-dioxanylethyl) magnesium bromide to generate propylal quinclorac, and then reacting with trifluoroacetic acid. The test strip and the detection method provided by the inventionhave the advantages of simplicity in operation, high sensitivity, high detection speed, low cost and capability of realizing rapid detection and on-site monitoring of quinclorac in a large quantity ofsamples.