CN1536049A - Magnetic-optic crystal fluorescence powder and its production method - Google Patents

Magnetic-optic crystal fluorescence powder and its production method Download PDF

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Publication number
CN1536049A
CN1536049A CNA031094449A CN03109444A CN1536049A CN 1536049 A CN1536049 A CN 1536049A CN A031094449 A CNA031094449 A CN A031094449A CN 03109444 A CN03109444 A CN 03109444A CN 1536049 A CN1536049 A CN 1536049A
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fluorescent material
magneto
optical crystal
terbium
aluminium
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CN1245472C (en
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吴瑞孔
陈泰佑
黄昭龙
郑朝元
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Yuanshen Photoelectric Technology Co., Ltd.
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NANDI CHEMICAL INDUSTRY Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

The present invention relates to a magneto-optical crystal fluorescent powder and its production method. Said fluorescent powder belongs to a terbium-aluminium magneto-optical crystal type fluorescent powder, said invention provides its chemical structure formula. Said fluorescent prowder can use blue light-emitting diode as excitation light source, its light ray can excite said fluorescent powder to produce excitation light, and can be mixed with said excitation light to produce white light. Its production method can select solid reaction method, combustion method or coprecipitation method.

Description

Magneto-optical crystal fluorescent material and manufacture method thereof
Technical field
The present invention relates to a kind of magneto-optical crystal fluorescent material and manufacture method thereof, particularly relate to the magneto-optical crystal type fluorescent material that contains optical activation center more than two kinds by solid state reaction, combustion method or coprecipitation method manufacturing, fluorescent material can be subjected to the blue light-emitting diode light source activation and send suitable exciting light, and can with the mutual colour mixture of blue light-emitting diode light, thereby produce the pure white coloured light of high brightness, high color uniformity coefficient.
Background technology
The white light-emitting diodes of prior art and manufacture method thereof, shown in patents such as Taiwan patent announcement No. 492579, No. 490863, No. 480744, No. 472401, No. 461125 and No. 447148, the basic structure of its white light-emitting diodes normally is made up of a fluorescent material [being called fluorescent agent, fluorescent glue or phosphorescence thing layer again] collocation one suitable excitation light source.This excitation light source is for sending the diode (as blue light diode) of suitable wavelength, and this fluorescent material can produce the light [as gold-tinted] of another appropriate color smoothly under the exciting of excitation light source, after this light mixes the light of this excitation light source simultaneously, get final product the white light that smooth colour mixture formation can be visual.
Above-mentioned patent fluorescent material commonly used is selected from crystalline compounds (claiming host lattice again), for example Tb usually 3Al 5O 12Terbium aluminium magneto-optical crystal (Terbium Aluminum Garnet, TAG).This Tb 3Al 5O 12The magneto-optical crystal material is applied to magneto-optic memory technique usually, and magneto-optic memory technique is meant the optical information functional materials that is all had magneto-optic effect by ultraviolet to infrared band.The interaction of this its magneto-optical property of class material use and light, electricity, magnetic and conversion can constitute have optical modulation, light is isolated, light is shinny, the magnetic-optic devices of light deflection, optical information processing and other photoelectromagnetism transition functions.In addition, above-mentioned terbium aluminium magneto-optical crystal can be made Tb by rare earth element and other elements (for example cerium Ce, praseodymium Pr, samarium Sm, europium Eu, gadolinium Gd, dysprosium Dy, holmium Ho, erbium Er, ytterbium Yb, gold-plating Lu, strontium Sr, yttrium Y, vanadium V and chromium Cr) such as interpolation Ce elements 3Al 5O 12: Ce 3+The terbium aluminium magneto-optical crystal of type, and make the active center that itself has convertible luminous energy makes this fluorescent material produce another light and colour mixture and produce white light smoothly thus under the exciting of excitation light source.Though, Tb 3Al 5O 12: Ce 3+Be widely used in making white light-emitting diodes in terbium aluminium magneto-optical crystal type fluorescent material, the white light that colour mixture produces but such fluorescent material is stimulated shows still not good enough on brightness and color uniformity coefficient, although this fluorescent material can attempt to overcome above-mentioned shortcoming by the addition of adjusting Ce elements or the concentration and the composition of luminescence center, but be subject to the selectable substance of this fluorescent material too much and chromaticity coordinates wide excessively so that the adjustment of its brightness and color uniformity coefficient and improvement are still very difficult.
Summary of the invention
The present invention is with above-mentioned Tb 3Al 5O 12Magneto-optical crystal is a main body, magneto-optical crystal fluorescent material is developed in improvement, its mainly be add simultaneously cerium, gadolinium and silicon in the magneto-optic host lattice to make fluorescent material, fluorescent material be subjected to blue light-emitting diode excitation light source when irradiation not only color-mixing generate pure white coloured light, and its brightness and color uniformity coefficient are also far above the fluorescent material of independent interpolation cerium, and its chromaticity coordinates of easier adjustment.Simultaneously, the present invention also can select to make fluorescent material with combustion method and coprecipitation method, for the grain diameter that further reduces fluorescent material and its uniform particles degree of lifting.
Main purpose of the present invention provides a kind of magneto-optical crystal fluorescent material and manufacture method thereof, its add simultaneously cerium, gadolinium and silicon in the magneto-optic host lattice to form (Tb 3-x-yCe xGd y) (Al 5-zO 12Me z) fluorescent material [0＜x≤0.8; 0＜y≤2.0; 0＜z≤1.0], color-mixing produced pure white coloured light when this fluorescent material was subjected to the irradiation of blue light-emitting diode excitation light source, and its brightness and color uniformity coefficient are all far above the fluorescent material of independent interpolation cerium, and more easily adjust its chromaticity coordinates, and make the present invention is magneto-optical crystal fluorescent material, has the effect of white light-emitting diodes optical property.
Secondary objective of the present invention provides a kind of magneto-optical crystal fluorescent material and manufacture method thereof, wherein magneto-optical crystal type fluorescent material is divided by outside the solid state reaction manufactured, also can select to utilize combustion method or coprecipitation method manufacturing, and the fluorescent material that makes can reduce grain diameter and promote the uniform particles degree.
According to magneto-optical crystal fluorescent material of the present invention and manufacture method thereof, main fluorescent material is the fluorescent material that belongs to terbium aluminium magneto-optical crystal type, and its chemical structure is (Tb 3-x-yCe xRe y) (Al 5-zO L2Me z) [0＜x≤0.8; 0＜y≤2.0; 0＜z≤1.0], the preferred gadolinium element of Re wherein, but also replaceable one-tenth is selected from least a metallic element in rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and the chromium, and Me is a silicon; This fluorescent material can utilize blue light-emitting diode as excitation light source, and its light can excite this fluorescent material to produce exciting light, and produces pure white coloured light with this exciting light colour mixture.The manufacture method of this magneto-optical crystal fluorescent material is made by solid state reaction, combustion method or coprecipitation method.
Description of drawings
Fig. 1 adds the terbium aluminium magneto-optical crystal type fluorescent material (Tb of cerium and gadolinium simultaneously for the present invention 2.755Ce 0.045Gd 0.2) Al 5O 12Excitation spectrum when utilizing the preferred excitation wavelength of the light source detection of wavelength 549.8nm;
Fig. 2 adds the terbium aluminium magneto-optical crystal type fluorescent material (Tb of cerium and gadolinium simultaneously for the present invention 2.755Ce 0.045Gd 0.2) Al 5O 12Excitation spectrum when utilizing the preferred excitation wavelength of the light source detection of wavelength 470nm;
The fluorescent material chromaticity coordinates A that Fig. 3 obtains for Fig. 2 emmission spectrum of the present invention links to each other the dotted line that forms with the blue light chromaticity coordinates B of wavelength 470nm can be by white light block (White) figure of chromaticity coordinates figure;
Fig. 4 is the magneto-optical crystal fluorescent material manufacture method schema of first embodiment of the invention;
Fig. 5 is the magneto-optical crystal fluorescent material manufacture method schema of second embodiment of the invention;
Fig. 6 is the magneto-optical crystal fluorescent material manufacture method schema of third embodiment of the invention.
Description of symbols in the accompanying drawing:
The chromaticity coordinates of A---fluorescent material of the present invention (0.4443,0.5221)
B---wavelength is the blue light chromaticity coordinates (0.1241,0.0578) of 470nm
C---CIE white light standard illuminants
Embodiment
Detailed description below in conjunction with accompanying drawing and embodiment illustrates purpose of the present invention, technology contents and plurality of advantages, but can not constitute limitation of the invention.
Fig. 1 shows that the present invention adds the terbium aluminium magneto-optical crystal type fluorescent material (Tb of cerium and gadolinium simultaneously 2.755Ce 0.045Gd 0.2) Al 5O 12Excitation spectrum during with the preferred excitation wavelength of light source detection of wavelength 549.8nm; Fig. 2 has shown that the present invention adds the terbium aluminium magneto-optical crystal type fluorescent material (Tb of cerium and gadolinium simultaneously 2.755Ce 0.045Gd 0.2) Al 5O 12Excitation spectrum during with the preferred excitation wavelength of light source detection of wavelength 470nm; Fig. 3 shows that fluorescent material chromaticity coordinates A that the present invention is obtained by the emmission spectrum of Fig. 2 links to each other the dotted line that forms with the blue light chromaticity coordinates B of wavelength 470nm can be by the white light block (White) of chromaticity coordinates figure; Fig. 4 shows the schema of the magneto-optical crystal fluorescent material manufacture method of first embodiment of the invention; Fig. 5 shows the schema of manufacture method of the magneto-optical crystal fluorescent material of second embodiment of the invention; And Fig. 6 shows the schema of manufacture method of the magneto-optical crystal fluorescent material of third embodiment of the invention.
Method of the present invention is a kind of manufacture method of magneto-optical crystal fluorescent material.Wherein the chemical structure of fluorescent material is (Tb 3-x-yCe xRe y) (Al 5O 12) [0＜x≤0.8; 0＜y≤2.0] wherein Re be preferably the gadolinium element, but also replaceable is at least a rare earth element or other proper metal elements, it is selected from rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and chromium, as activator and coactivator.In addition, the chemical structure of this fluorescent material also can be (Tb 33-x-yCe xRe y) (Al 5-zO 12Me z) [0＜x≤0.8; 0＜y≤2.0; 0＜z≤1.0], wherein Me is the silicon of displacement or interpolation.Simultaneously, the present invention also can make purity, uniformity coefficient and size optimizing by appropriate regulation processing procedure or conversion manufacture method.
The present invention first to three embodiment will have particular chemical formula and suitable magneto-optical crystal fluorescent material and chemical structure, manufacturing step and the specificity analysis thereof of making high brightness, high color uniformity coefficient in hereinafter describing different manufacture method manufacturings such as utilizing solid state reaction, combustion method and coprecipitation method in detail with Fig. 1 to Fig. 6:
First embodiment:, as shown in Figure 4, comprise the following step by solid state reaction manufactured terbium aluminium of the present invention magneto-optical crystal type fluorescent material:
First step: the Terbium trinitrate (Tb (No that gets 3.0 grams according to stoichiometric ratio respectively 3) 36H 2O), the aluminum nitrate (Al (No of 4.696 grams 3) 39H 2O), the cerous nitrate (Ce (No of 0.0469 gram 3) 35H 2O) and 0.1815 the gram gadolinium sesquioxide (Gd 2O 3), be (Tb to form chemical formula 2.755Ce 0.045Gd 0.2) Al 5O 12Structure.Then, with the raw material that takes by weighing with the lapping mode uniform mixing.
Second step: mixture is placed crucible, be heated to 1000 ℃, carry out calcination (calcination), continue calcination after 12 hours, be cooled to room temperature with the rate of temperature fall of 5 ℃/min with the temperature rise rate of 5 ℃/min.
Third step: grind the powder after the calcination, this powder is placed crucible once more and with 1200 ℃ of sintering (sintering) 12 hours, the temperature rate of sintering step was 5 ℃/min.
The 4th step: the powder behind the grinding and sintering places H with this powder again 2/ N 2In the reducing gas of (8%: 92%), 1200 ℃ are reduced (reduction) 12 hours, with the Ce in the sample 4+Ion is reduced into Ce 3+, improving its luminosity thus, the present invention can or omit this step according to the product demand selection operation.
The 5th step: take out the fluorescent material that makes after being cooled to room temperature, and grind this fluorescent material with mortar.Then, measure the characteristics of luminescence of fluorescent material with light excitation light spectrometer.
Second embodiment: make terbium aluminium magneto-optical crystal type fluorescent material of the present invention by combustion method, as shown in Figure 5, comprise the following step:
First step: the Terbium trinitrate (Tb (No that gets 3.0 grams according to stoichiometric ratio respectively 3) 36H 2O), the aluminum nitrate (Al (No of 4.696 grams 3) 39H 2O), the cerous nitrate (Ce (No of 0.0469 gram 3) 35H 2O) and 0.1815 the gram gadolinium sesquioxide (Gd 2O 3), be (Tb to form chemical formula 2.755Ce 0.045Gd 0.2) Al 5O 12Structure.Then, this metallic salt is mixed and insert in the double distilled water, make it be dissolved into the aqueous solution.
Second step:, make it become thick liquid with 100 ℃～120 ℃ these solution of heating.
Third step: get sequestrants such as the urea of 1.4 times of metal ion molal quantities or oxalic acid ammonia, it is added in this thick liquid, and with concussion mode uniform mixing.
The 4th step: this thick liquid is cooled off the jello of back gained with 600 ℃ of thermal degradation.At this moment, urea/oxalic acid ammonia can decomposite inflammable gas and reducing gas, thereby obtains the spumescence bulk material, and this material can tentatively be mingled with the part crystalline phase usually and generate.
The 5th step: grind this bulk material, be placed in the crucible and with 1200 ℃ of sintering 12 hours, the agglomerating temperature rate remained on 5 ℃/min.
The 6th step: the powder behind the grinding and sintering places H once more with it 2/ N 2In the reducing gas of (8%: 92%), and reduced 12 hours with 1200 ℃, with the Ce in the sample 4+Ion is reduced into Ce 3+, improve its luminosity thus, but the present invention can or omit this step according to the product demand selection operation.
The 7th step: take out the fluorescent material that makes after being cooled to room temperature, and grind with mortar.Then, measure the characteristics of luminescence of fluorescent material by the photoluminescence spectrograph.
The 3rd embodiment: make terbium aluminium magneto-optical crystal type fluorescent material of the present invention with coprecipitation method, as shown in Figure 6, comprise the following step:
First step: the Terbium trinitrate (Tb (No that gets 3.0 grams according to stoichiometric ratio respectively 3) 36H 2O), the aluminum nitrate (Al (No of 4.696 grams 3) 39H 2O), the cerous nitrate (Ce (No of 0.0469 gram 3) 35H 2O) and 0.1815 the gram gadolinium sesquioxide (Gd 2O 3), be (Tb for forming chemical formula 2.755Ce 0.045Gd 0.2) Al 5O 12Structure.Then, this metallic salt is mixed and inserts make it be dissolved into the aqueous solution in the double distilled water.
Second step: suitable alkaline matters such as quadrol are added in the aqueous solution of this metal ion chelate, make it be adjusted to PH 〉=10.
Third step: stir this aqueous solution and make it form colloidal solution, and obtain white jelly with the filtration under diminished pressure method.
The 4th step: should the white jelly in most of organic substances of 400 ℃ of thermal degradation and part oxynitride, to obtain the meal of chocolate.
The 5th step: meal is put in the crucible, and be heated to 1000 ℃ with the temperature rise rate of 5 ℃/min and carry out calcination.Then, in lasting calcination after 12 hours, be cooled to room temperature with the rate of temperature fall of 5 ℃/min.
The 6th step: grind this powder after the calcination, it is inserted in the crucible once more, and with 1200 ℃ of sintering 12 hours.At this moment, the agglomerating temperature rate still remains 5 ℃/min.
The 7th step: the powder behind the grinding and sintering is placed on H again 2/ N 2In the reducing gas of (8%: 92%) with 1200 ℃ of reduction 12 hours, with the Ce in the sample 4+Ion is reduced into Ce 3+, improve its luminosity thus, but the present invention can or omit this step according to the product demand selection operation.
The 8th step: take out the fluorescent material that obtains after being cooled to room temperature, and grind with mortar.Then, measure the characteristics of luminescence of fluorescent material by the photoluminescence spectrograph.
In addition, the employed material powder of the first step of the various embodiments described above is replaceable is oxide compound, nitrate, organometallic compound, metallic salt of employed metallic compound and composition thereof.The chelating of the metal amine salt chelate of second embodiment is an organic compound, and it can discharge inflammable gas and/or reducing gas when thermolysis.The alkaline matter of the 3rd embodiment is an alkaline organic compound, and it can form jelly with this metal ion chelate.
The fluorescent material property analysis: the inventive method is by adding cerium and gadolinium and silicon simultaneously in the magneto-optic host lattice, be applicable to the fluorescent material (fluorescent material) of manufacturing photodiode to make, the optical characteristics of this phosphor material powder can be utilized photoluminescence spectrograph (Photoluminescence spectrometer) that twinkler is tentatively carried out excitation spectrum and detect, and is learnt the preferred excitation wavelength of fluorescent material by spectral results.The tool cerium that coprecipitation method of the present invention is made and the terbium aluminium magneto-optical crystal type fluorescent material (Tb of gadolinium and silicon 2.755Ce 0.045Gd 0.2) Al 5O 12(or be (Tb 3-x-yCe xGd y) (Al 5-zO 12Me z)) with its suitable excitation wavelength of wavelength 549.8nm light source detection, as shown in Figure 1, by detect spectral results as can be known the preferred exciting light of fluorescent material of the present invention be that wavelength is the light of 430nm to 490nm, the blue light about wavelength 470nm particularly.The excitation wavelength of the photodiode that this magneto-optical crystal fluorescent material uses is 430nm to 490nm.
As shown in Figure 2, the magneto-optical crystal type fluorescent material that contains two kinds of optical activation centers simultaneously as the present invention is subjected to wavelength when being 450nm to 490nm blue-light excited, and it very easily sends wavelength region is that the gold-tinted of 520nm to 590nm is to orange-colored light.
As shown in Figure 3, method of the present invention can be utilized suitable material support or fixed fluorescent powder, and cooperates the blue light-emitting diode that can send suitable wavelength as excitation light source, so can obtain the white light of high brightness and high color uniformity coefficient.The excitation spectrum data of this fluorescent material are that (Commission Intemational del ' Eclairage, CIE) formula of the chromaticity coordinates figure of Zhi Dinging [CIEChromaticity diagram] was converted into the chromaticity coordinates of this fluorescent material representative according to International Commission on Illumination in 1931.In addition, make excitation light source chromaticity coordinates B (0.1241, the 0.0578) end points of chromaticity coordinates A (0.4443, the 0.5221) end points of luminescent crystal fluorescent material and wavelength 470nm be marked on this chromaticity coordinates figure respectively (with white light as (x, y) chromaticity coordinates), and make the continuous dotted line that forms of two end points.
With reference to shown in Figure 3, this dotted line is can be by the white light block (White) among this chromaticity coordinates figure, promptly according to coloured light blended principle, to be subjected to wavelength simultaneously be the light wave of 470nm and gold-tinted to the light wave of orange light (A point) when stimulating when optic nerve, promptly can colour mixture produces the vision of pure white coloured light.Therefore, with the fluorescent material (Tb of the special chemical structure of the inventive method gained 2.755Ce 0.045Gd 0.2) Al 5O 12Mix in accordance with the appropriate ratio with suitable material, cooperate again can send suitable wavelength (this example for the blue light diode of 450nm～490nm) as excitation light source, and after suitably encapsulating, can send pure white coloured light through this light source activation, and its brightness and color uniformity coefficient are added the fluorescent material height of cerium more separately, and can reach other required chromaticity coordinatess.
In addition, chemical synthesis of the present invention (coprecipitation method and combustion method) is the precursor that the metal amine salt chelate conduct when utilizing the formation gel sinters the crystallinity metal oxide into, in the heat treatment process of this precursor, owing to carry out combustion processes and temperature is slow and gentle, therefore can make the crystalline component that makes have uniform particles degree height and the little effect of size of microcrystal, so utilize the made fluorescent material of manufacture method of the present invention to have the preferable characteristics of luminescence.
More than described the preferred embodiment for the present invention, so it is not in order to limit the present invention.Those skilled in the art can not depart from the improvement and the variation of category of the present invention and spirit to embodiment disclosed herein.

Claims (10)

1. magneto-optical crystal fluorescent material wherein comprises: fluorescent material, and it is the fluorescent material of terbium aluminium magneto-optical crystal type, the chemical structure of this terbium aluminium magneto-optical crystal is (Tb 3-x-yCe xRe y) (Al 5-ZO 12Me z), wherein: 0＜x≤0.8,0＜y≤2.0,0＜z≤1.0, Re is selected from least a metallic element in rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and the chromium, is preferably the gadolinium element, and Me is the silicon of displacement or interpolation.
2, magneto-optical crystal fluorescent material as claimed in claim 1, wherein the excitation wavelength of the photodiode that uses of this magneto-optical crystal fluorescent material is 430nm to 490nm.
3, a kind of manufacture method of magneto-optical crystal fluorescent material, it is to reach finally and grind through mixing, grinding, calcination, sintering successively by the metallic compound of solid state reaction with terbium, aluminium, cerium and Re, is (Tb to make chemical structure 3-x-yCe xRe y) (Al 5-ZO 12Me z) terbium aluminium magneto-optical crystal type fluorescent material, wherein: 0＜x≤0.8,0＜y≤2.0,0＜z≤1.0, Re is selected from least a metallic element in rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and the chromium, be preferably the gadolinium element, and Me is the silicon of displacement or interpolation.
4, a kind of manufacture method of magneto-optical crystal fluorescent material, its for by combustion method with the metallic compound of terbium, aluminium, cerium, Re close through mixing, dissolve, heat, stinging in regular turn, heating, sintering and final the grinding, be (Tb to make chemical structure 3-x-yCe xRe y) (Al 5-ZO 12Me z) terbium aluminium magneto-optical crystal type fluorescent material, wherein: 0＜x≤0.8,0＜y≤2.0,0＜z≤1.0, Re is selected from least a metallic element in rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and the chromium, be preferably the gadolinium element, and Me is the silicon of displacement or interpolation.
5, the manufacture method of magneto-optical crystal fluorescent material as claimed in claim 4, wherein the chelating of this combustion method use is an organic compound, it can discharge inflammable gas and/or reducing gas when thermolysis.
6, a kind of manufacture method of magneto-optical crystal fluorescent material wherein reaches finally and grinds through mixing, dissolving, alkalization, stirring, heating, calcination, sintering in regular turn by the metallic compound of coprecipitation method with terbium, aluminium, cerium, Re, is (Tb to make chemical structure 3-x-yCe xRe y) (Al 5-ZO 12Me z) terbium aluminium magneto-optical crystal type fluorescent material, wherein: 0＜x≤0.8,0＜y≤2.0,0＜z≤1.0, Re is selected from least a metallic element in rubidium, thulium, praseodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, gold-plating, strontium, yttrium, vanadium and the chromium, be preferably the gadolinium element, and Me is the silicon of displacement or interpolation.
7, the manufacture method of magneto-optical crystal fluorescent material as claimed in claim 6, wherein the alkaline matter of this coprecipitation method use is an alkaline organic compound, it can form jelly with this metal ion chelate.
8, as the manufacture method of claim 3,4 or 6 described magneto-optical crystal fluorescent material, wherein the excitation wavelength of the photodiode of this magneto-optical crystal fluorescent material use is 430nm to 490nm.
9, as the manufacture method of claim 3,4 or 6 described magneto-optical crystal fluorescent material, wherein this metallic compound is oxide compound, nitrate, organometallic compound, metallic salt or its mixture of terbium, aluminium, cerium, Re.
10, as claim 3,4 or 6 the manufacture method of magneto-optical crystal fluorescent material, wherein before final grinding steps, comprise a reduction step, utilize H 2/ N 2(8%: 92%) reducing gas reduces the Re ion.
CNB031094449A 2003-04-09 2003-04-09 Magnetic-optic crystal fluorescence powder and its production method Expired - Fee Related CN1245472C (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1927996B (en) * 2006-09-08 2012-05-09 北京宇极科技发展有限公司 Fluorescent powder material, preparation method thereof and white light LED electric light source
CN102575382A (en) * 2009-10-21 2012-07-11 株式会社藤仓 Single crystal, process for producing same, optical isolator, and optical processor using same
CN104119910A (en) * 2013-04-28 2014-10-29 广东超越光电科技有限公司 Fluorescent powder for light-emitting diode

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1927996B (en) * 2006-09-08 2012-05-09 北京宇极科技发展有限公司 Fluorescent powder material, preparation method thereof and white light LED electric light source
CN102575382A (en) * 2009-10-21 2012-07-11 株式会社藤仓 Single crystal, process for producing same, optical isolator, and optical processor using same
CN102575382B (en) * 2009-10-21 2015-07-01 株式会社藤仓 Single crystal, process for producing same, optical isolator, and optical processor using same
CN104119910A (en) * 2013-04-28 2014-10-29 广东超越光电科技有限公司 Fluorescent powder for light-emitting diode

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