CN102382655B - Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof - Google Patents

Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof Download PDF

Info

Publication number
CN102382655B
CN102382655B CN2010102680336A CN201010268033A CN102382655B CN 102382655 B CN102382655 B CN 102382655B CN 2010102680336 A CN2010102680336 A CN 2010102680336A CN 201010268033 A CN201010268033 A CN 201010268033A CN 102382655 B CN102382655 B CN 102382655B
Authority
CN
China
Prior art keywords
fluorescent material
lt
z2
z1
fluorescent powder
Prior art date
Application number
CN2010102680336A
Other languages
Chinese (zh)
Other versions
CN102382655A (en
Inventor
高文贵
何华强
刘荣辉
庄卫东
胡运生
张书生
夏天
Original Assignee
有研稀土新材料股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 有研稀土新材料股份有限公司 filed Critical 有研稀土新材料股份有限公司
Priority to CN2010102680336A priority Critical patent/CN102382655B/en
Publication of CN102382655A publication Critical patent/CN102382655A/en
Application granted granted Critical
Publication of CN102382655B publication Critical patent/CN102382655B/en

Links

Abstract

The present invention provides a phosphorus-containing LED fluorescent powder, a preparation method and a prepared light-emitting device thereof. The chemical formula of the fluorescent powder is R3-z1-z2MqPxO12Fy:Cez1,R'z2, wherein, R is at least one selected from Sc, Y, La, Gd and Lu; M is at least one selected from Al, Ga and In; R' is at least one selected from Ca, Sr, Ba, Pr, Eu, Tb and Dy. In the formula, 0.001</=x</=0.88; 0.05</=y</=1.0; 4.0</=q</=5.4; 0.01</=z1</=0.3; and 0</=z2</=0.3. A manufacturing method of the phosphorus-containing LED fluorescent powder comprises the following steps: adding flux into elementary substance, oxide or corresponding salt of the components in the chemical formula; mixing to uniform; roasting at a reducing atmosphere; and performing after-treatment for obtaining the fluorescent powder. The fluorescent powder has the following advantages: high brightness, uniform particle diameter, wide excitation range, high chemical stability, simple manufacturing method, no pollution, low cost, stable product performance, etc. The fluorescent powder of the invention can be used for manufacturing a novel light emitting device when used together with a blue LED chip.

Description

A kind of phosphorous LED fluorescent material and manufacture method and made luminescent device

Technical field

The present invention relates to a kind of fluorescent material that can effectively be excited by blue light and preparation method thereof and made luminescent device.

Background technology

Volume is little owing to having for white light LEDs, environmental protection, energy-conservation, long lifetime, be not afraid of vibrations, can frequent starting or the advantage such as close, be described as light source of new generation, be widely used at present illumination, show with backlight, pilot lamp and decorative illumination field.

In the way of realization of the multiple white light of white light LEDs, because blue chip adds, the array mode of yellow fluorescent powder is with low cost, so stable performance is most widely used, as can be seen here, the fluorescent material of high, the stable performance of luminous efficiency has great significance for the luminosity of white light LEDs.A large amount of research work has been carried out in countries in the world in the research and development of LED fluorescent material: Japanese Patent JP200619323 discloses a kind of Y that contains V group element 3-xal 5o 12: Ce xfluorescent material; U.S. Pat 20000534576 discloses and a kind ofly by fluorochemical, as fusing assistant preparation, has consisted of A 3d 5o 12: Ce 3+the method of fluorescent material, improved quantum yield and the luminosity of such fluorescent material.Beijing Non-Ferrous Metal Research General Academy and Grirem Advance Materials Co., Ltd disclose a kind of R of consisting of in 2002 (3-x-y)m 5o 12: Ce x, R ' yfluorescent material (Chinese patent ZL02130949.3), its emission main peak can in wider scope, move; A kind of Ln of consisting of is disclosed again in 2006 am b(O, F) 12: (R 3+, M ' 2+) xfluorescent material (Chinese patent 200610114519.8), wherein introduced divalent metal element, to F -replace O 2-rear formed charging center carries out charge compensation, and luminous efficiency and stability are improved.

Summary of the invention

The purpose of this invention is to provide a kind of can be by blue-light excited, stable chemical nature, luminosity is high, peak wavelength is adjustable, diameter of particle is evenly distributed and the fluorescent material of good fluidity.

Another object of the present invention is to provide a kind of method of manufacturing this fluorescent material, and the method is simple, pollution-free, cost is low, product performance are stable.

The 3rd purpose of the present invention is to provide a kind of luminescent device of being made by this fluorescent material.

To achieve these goals, the present invention takes following technical scheme:

A kind of fluorescent material of the present invention, have in garnet structure and composition and contain P and two kinds of elements of F simultaneously, and its chemical formula is: R 3-z1-z2m qp xo 12f y: Ce z1, R ' z2.

Wherein: R is at least one in Sc, Y, La, Gd and Lu, in Sc, Y, La, Gd and Lu a kind of, two or three; Preferably in Sc, Y, Gd and Lu at least one, that is, and in Sc, Y, Gd and Lu a kind of, two or three; In more preferred Sc, Y and Gd at least one, that is, and in Sc, Y and Gd a kind of, two or three.

M is at least one in Al, Ga and In, that is, in Al, Ga and In a kind of, two or three; Preferably in Al and Ga at least one, that is, and one or both in Al and Ga.

R ' is at least one in Ca, Sr, Ba, Pr, Eu, Tb and Dy, that is, in Ca, Sr, Ba, Pr, Eu, Tb and Dy a kind of, two or three; Preferably in Sr, Ba, Eu and Tb at least one, that is, and in Sr, Ba, Eu and Tb a kind of, two or three; In more preferred Ba, Eu and Tb at least one, that is, and in Ba, Eu and Tb a kind of, two or three.

Wherein, 0.001≤x≤0.88; Preferable range is 0.03≤x≤0.8; More preferred scope is 0.03≤x≤0.7.

0.005≤y≤1.0; Preferable range is 0.01≤y≤0.6; More preferred scope is; 0.1≤y≤0.5.

4.0≤q≤5.4; Preferable range is 4.0≤q≤5.15; More preferred scope is 4.5≤q≤5.0.

0.01≤z1≤0.3; Preferable range is 0.02≤z1≤0.2; More preferred scope is 0.04≤z1≤0.18.

0≤z2≤0.3; Preferable range is 0≤z2≤0.2; More preferred scope is 0.05≤z2≤0.2.

Phosphorous fluorescent material disclosed by the invention can be by 430~480nm blue-light excited, emission peak wavelength is in 520~570nm scope, the powder medium particle diameter is in 2~30 μ m scopes, and size distribution is at 0.5<(D 90-D 10)/D 50in<1.5 scopes.

The preparation method of above-mentioned LED fluorescent material is as follows:

(1), according to chemical formula R 3-z1-z2m qp xo 12f y: Ce z1, R ' z2prepared burden, wherein: R is at least one in Sc, Y, La, Gd and Lu, in Sc, Y, La, Gd and Lu a kind of, two or three; Preferably in Sc, Y, Gd and Lu at least one, that is, and in Sc, Y, Gd and Lu a kind of, two or three; In more preferred Sc, Y and Gd at least one, that is, and in Sc, Y and Gd a kind of, two or three.

M is at least one in Al, Ga and In, that is, in Al, Ga and In a kind of, two or three; Preferably in Al and Ga at least one, that is, and one or both in Al and Ga.

R ' is at least one in Ca, Sr, Ba, Pr, Eu, Tb and Dy, that is, in Ca, Sr, Ba, Pr, Eu, Tb and Dy a kind of, two or three; Preferably in Sr, Ba, Eu and Tb at least one, that is, and in Sr, Ba, Eu and Tb a kind of, two or three; In more preferred Ba, Eu and Tb at least one, that is, and in Ba, Eu and Tb a kind of, two or three.

Wherein, 0.001≤x≤0.88; Preferable range is 0.03≤x≤0.8; More preferred scope is 0.03≤x≤0.7.

0.005≤y≤1.0; Preferable range is 0.01≤y≤0.6; More preferred scope is; 0.1≤y≤0.5.

4.0≤q≤5.4; Preferable range is 4.0≤q≤5.15; More preferred scope is 4.5≤q≤5.0.

0.01≤z1≤0.3; Preferable range is 0.02≤z1≤0.2; More preferred scope is 0.04≤z1≤0.18.

0≤z2≤0.3; Preferable range is 0≤z2≤0.2; More preferred scope is 0.05≤z2≤0.2.

With one or more in the salt of the fluorochemical of the oxide compound of the simple substance of R, R, R and R, one or more in the fluorochemical of the simple substance of M, the oxide compound of M, M and the salt of M, one or more in the salt of the oxide compound of R ', the fluorochemical of R ' and R ', one or more in the simple substance of P, the oxide compound of P and phosphoric acid salt, the simple substance of F and one or more of fluorochemical, and CeO 2with one or more in cerium salt be raw material, according to the chemical formula of above-mentioned fluorescent material, form and stoichiometric ratio takes required phosphor raw material.

(2), step (1) Raw is added to fusing assistant, mix, wherein, fusing assistant is alkaline earth metal halide, rare earth metal halide, AlF 3and H 3bO 3in at least one, consumption is 0~8% of initial raw material total mass.

(3), the compound obtained in step (2) is carried out to roasting under reducing atmosphere, wherein, reducing atmosphere is carbon reducing atmosphere, H 2and H 2and N 2gas mixture at least one, the roasting number of times can be once, twice or repeatedly, maturing temperature is 1400~1600 ℃, roasting time is 1~4h.

(4), the product that obtains in step (3) is broken and sieve after obtain thick product.

(5), by obtaining thick product in step (4), obtain again the ultimate aim product after size grading, pickling, washing and oven dry.

In described step (5) size grading of product refer to sieve, at least one in wet concentration and air classification.

In described step (5), pickling acid used is at least one in nitric acid, phosphoric acid, hydrochloric acid and sulfuric acid.

A kind of luminescent device, at least contain blue chip and fluorescent material of the present invention, and the chemical formula of this fluorescent material is: R 3-z1-z2m qp xo 12f y: Ce z1, R ' z2.

Wherein: R is at least one in Sc, Y, La, Gd and Lu, in Sc, Y, La, Gd and Lu a kind of, two or three; Preferably in Sc, Y, Gd and Lu at least one, that is, and in Sc, Y, Gd and Lu a kind of, two or three; In more preferred Sc, Y and Gd at least one, that is, and in Sc, Y and Gd a kind of, two or three.

M is at least one in Al, Ga and In, that is, in Al, Ga and In a kind of, two or three; Preferably in Al and Ga at least one, that is, and one or both in Al and Ga.

R ' is at least one in Ca, Sr, Ba, Pr, Eu, Tb and Dy, that is, in Ca, Sr, Ba, Pr, Eu, Tb and Dy a kind of, two or three; Preferably in Sr, Ba, Eu and Tb at least one, that is, and in Sr, Ba, Eu and Tb a kind of, two or three; In more preferred Ba, Eu and Tb at least one, that is, and in Ba, Eu and Tb a kind of, two or three.

Wherein, 0.001≤x≤0.88; Preferable range is 0.03≤x≤0.8; More preferred scope is 0.03≤x≤0.7.

0.005≤y≤1.0; Preferable range is 0.01≤y≤0.6; More preferred scope is; 0.1≤y≤0.5.

4.0≤q≤5.4; Preferable range is 4.0≤q≤5.15; More preferred scope is 4.5≤q≤5.0.

0.01≤z1≤0.3; Preferable range is 0.02≤z1≤0.2; More preferred scope is 0.04≤z1≤0.18.

0≤z2≤0.3; Preferable range is 0≤z2≤0.2; More preferred scope is 0.05≤z2≤0.2.

Characteristics of the present invention are:

1, a kind of fluorescent material that simultaneously contains P and two kinds of elements of F in garnet structure and composition that has has been proposed, by a large amount of experiments, the inventor finds that introducing P in containing the structure of F can make the luminescent properties of fluorescent material be significantly improved simultaneously, the common introducing of the P of positively charged and electronegative F not only can be played the effect of balancing charge, improves phototranstormation efficiency and stability; In addition, introduce P and F simultaneously and can also play good regulating and controlling effect to lattice parameter and crystal potential field, thereby realize to the adjusting of emission peak wavelength with to the improvement of quantum yield.This fluorescent material can be by 430~480nm blue-light excited, emission peak wavelength is in 520~570nm scope, stable chemical performance, luminosity is high, diameter of particle is even and good fluidity.

2, proposed a kind of method for preparing fluorescent material, the method technique is simple, pollution-free, cost is low, product performance are stable.

3, proposed a kind of luminescent device, this luminescent device luminosity is high, the life-span long, stable performance.

The accompanying drawing explanation

The excitation and emission spectra that Fig. 1 is embodiment 1, excitation wavelength 450nm, supervisory wavelength 540nm.

The excitation and emission spectra that Fig. 2 is embodiment 2, excitation wavelength 440nm, supervisory wavelength 530nm.

The excitation and emission spectra that Fig. 3 is embodiment 3, excitation wavelength 460nm, supervisory wavelength 560nm.

Embodiment

Below with embodiment, LED fluorescent material of the present invention and manufacture method thereof are described further; to contribute to further the further understanding to product of the present invention and manufacture method; protection scope of the present invention is not subject to the restriction of these embodiment, and protection scope of the present invention is decided by claims.

Comparative example

The LED fluorescent material product of comparative example, its chemical formula is by analysis: Y 2.94al 5o 12: Ce 0.06, its manufacture method is, according to stoichiometric ratio, takes Y 2o 3(4N), Al 2o 3(4N), CeO 2(4N), and with the H of above raw material total mass 2% 3bO 3for fusing assistant, fully mix, high-temperature roasting 3h under the nitrogen and hydrogen mixture atmosphere that is 98: 2 1550 ℃ of volume ratios, products therefrom obtains the comparative example product after fragmentation, size grading, pickling, washing, oven dry.

Embodiment 1

Chemical formula is Y 2.94al 5.017p 0.05o 12f 0.4: Ce 0.06the embodiment of fluorescent material:

According to the accurate weighing Y of the stoichiometric ratio of above chemical formula 2o 3(4N), Al 2o 3(4N), NH 4h 2pO 4(AP), CeO 2(4N), YF 3(AP), YF wherein 3be that raw material can play the effect of fusing assistant again, fully mix, successively at 1300 ℃ and 1500 ℃ of ammonia cracking gained N 2and H 2mixed atmosphere under roasting 2h, the product then roasting obtained is broken, sieve, more obtains fluorescent material of the present invention through rare nitric acid acidwashing, washing, the oven dry of air-flow size grading, 1mol/L.The fluorescent material excitation and emission spectra of this embodiment is shown in accompanying drawing 1.

Embodiment 2

Chemical formula is Y 1.58gd 1.20al 5.02p 0.001o 12f 0.005: Ce 0.16, Ba 0.06the embodiment of fluorescent material:

According to the accurate weighing Y of the stoichiometric ratio of above chemical formula 2o 3(4N), Gd 2o 3(4N), Al 2o 3(4N), NH 4h 2pO 4(AP), CeO 2(4N), BaCO 3(AP), YF 3(AP), and with the H of above raw material total mass 2% 3bO 3for fusing assistant, fully mix, at 1600 ℃ of H 2high-temperature roasting 1h under atmosphere, the product then roasting obtained is broken, sieve, more obtains fluorescent material of the present invention through screen sizing, the phosphoric acid pickling of 2mol/L, washing, oven dry.The fluorescent material excitation and emission spectra of this embodiment is shown in accompanying drawing 2.

Embodiment 3

Chemical formula is Y 2.74al 3.0ga 2.0p 0.06o 12f 0.1: Ce 0.06, Ba 0.2the embodiment of fluorescent material:

According to the accurate weighing Y of the stoichiometric ratio of above chemical formula 2o 3(4N), Al 2o 3(4N), Ga 2o 3(4N), NH 4h 2pO 4(AP), CeO 2(4N), BaF 2(AP), AlF 3(AP), BaF wherein 2and AlF 3be that raw material can play the effect of fusing assistant again, fully mix, high-temperature roasting 2h under 1500 ℃ of carbon reducing atmospheres, the product then roasting obtained is broken, sieve, more obtains fluorescent material of the present invention through dilute hydrochloric acid pickling, washing, the oven dry of wet concentration size grading, 1mol/L.The fluorescent material excitation and emission spectra of this embodiment is shown in accompanying drawing 3.

Embodiment 4

Chemical formula is Y 1.69sc 1.0al 2.0ga 2.0p 0.86o 12f 1.0: Ce 0.01, Dy 0.002, Ba 0.298the embodiment of fluorescent material:

According to the accurate weighing Y of the stoichiometric ratio of above chemical formula 2o 3(4N), Sc 2o 3(4N), Al 2o 3(4N), Ga 2o 3(4N), P 2o 5(AP), Ce (NO 3) 36H 2o (AP), Dy 2o 3(4N), BaCO 3(AP), NH 4f (4N), wherein NH 4f is that raw material can play the effect of fusing assistant again, fully mix, high-temperature roasting 2h under 1500 ℃ of carbon reducing atmospheres, the product then roasting obtained is broken, sieve, more obtains fluorescent material of the present invention through dilute sulphuric acid pickling, washing, the oven dry of air-flow size grading, 1mol/L.

Embodiment 5

Chemical formula is Y 2.079la 0.3lu 0.5al 3.5ga 0.5in 0.5p 0.7o 12f 0.5: Ce 0.12, Pr 0.001the embodiment of fluorescent material:

According to the accurate weighing Y of the stoichiometric ratio of above chemical formula 2o 3(4N), La 2o 3(4N), Lu 2o 3(4N), Al 2o 3(4N), Ga 2o 3(4N), In 2o 3(4N), NH 4h 2pO 4(AP), Ce 2(CO 3) 3nH 2o (AP), Pr 2o 3(4N), NH 4f (AP), and add the MgF of above-mentioned raw materials total mass 8.0% 2for fusing assistant, fully mix, at 1450 ℃ of carbon reduction high-temperature roasting 2h, then the product that roasting obtained is broken, sieve, more the acid solution pickling, washing, the oven dry that through the hydrochloric acid of the phosphoric acid of air-flow size grading and wet concentration, 2mol/L and 1mol/L, within 1: 1 by volume, are mixed to get successively obtain fluorescent material of the present invention.

Embodiment 6-13: change matrix, activator and fusing assistant in embodiment 1, wherein, embodiment 6, embodiment 7, embodiment 8 adopt the H of raw material total mass 2% used 3bO 3for fusing assistant, in the raw material of embodiment 9, embodiment 10 and embodiment 11, AlF is arranged 3, not only can play the effect of fusing assistant but also be that raw material one of forms, embodiment 12 and embodiment 13 adopt the MgF of raw material total mass 4% used 2for fusing assistant, according to the stoichiometric ratio synthetic sample of chemical formula in table 1, synthetic method is identical with embodiment 1.The relative brightness of these embodiment gained fluorescent material, emission main peak and medium particle diameter are as shown in table 1.

Table 1

Use the embodiment of the fluorescent material manufacture white light LED luminescent device of embodiment 1

Implementation process: the fluorescent material that takes certain mass is coated on blue chip after sizing mixing, and has welded circuit, uses the resin sealed knot, and the gained Sony ericsson mobile comm ab is white light LED luminescent device of the present invention.

Claims (9)

1. a phosphorous fluorescent material, is characterized in that having following expression: R 3-z1-z2m qp xo 12f y: Ce z1, R ' z2, wherein, R is at least one in Sc, Y, La, Gd and Lu; M is at least one in Al, Ga and In; R ' is at least one in Ca, Sr, Ba, Pr, Eu, Tb and Dy, wherein, and 0.001≤x≤0.88; 0.005≤y≤1.0; 4.0≤q≤5.4; 0.01≤z1≤0.3; 0≤z2≤0.3.
2. phosphorous fluorescent material according to claim 1, it is characterized in that: R is at least one in Sc, Y, Gd and Lu; M is at least one in Al and Ga; R ' is Sr, Ba, Eu and Tb, at least one; Wherein, 0.03≤x≤0.8; 0.01≤y≤0.6; 4.0≤q≤5.15; 0.02≤z1≤0.2; 0≤z2≤0.2.
3. fluorescent material according to claim 1 and 2, it is characterized in that: R is at least one in Sc, Y and Gd; M is at least one in Al and Ga; R ' is at least one in Ba, Eu and Tb; Wherein, 0.03≤x≤0.7; 0.1≤y≤0.5; 4.5≤q≤5.0; 0.04≤z1≤0.18; 0.05≤z2≤0.2.
4. the preparation method of a claim 1,2 or 3 described fluorescent material is characterized in that at least comprising the following steps:
(1) with one or more in the salt of the fluorochemical of the oxide compound of R, R and R, one or more in the salt of the oxide compound of M, the fluorochemical of M and M, one or more in the salt of the oxide compound of R ', the fluorochemical of R ' and R ', the oxide compound of P and one or more in phosphoric acid salt, fluorochemical, and CeO 2with one or more in cerium salt be raw material, according to the chemical formula of above-mentioned fluorescent material, form and stoichiometric ratio takes required phosphor raw material;
(2) above-mentioned raw materials is added to fusing assistant, mix, wherein, reaction flux is alkaline earth metal halide, rare earth metal halide, AlF 3and H 3bO 3in at least one, consumption is 0~8% of initial raw material total mass;
(3) under reducing atmosphere, carry out roasting, wherein, reducing atmosphere is carbon reducing atmosphere, H 2and H 2and N 2gas mixture at least one, the roasting number of times is one or many, maturing temperature is 1400~1600 ℃, roasting time is 1~4h;
(4) product of roasting is broken and sieve, obtain thick product;
(5) the resulting thick product of step (4) is obtained to target product after size grading, pickling, washing and oven dry.
5. the preparation method of fluorescent material according to claim 4, is characterized in that in described step (5), the size grading of product refers to and sieves, at least one in wet concentration and air classification.
6. the preparation method of fluorescent material according to claim 4, is characterized in that, in described step (5), pickling acid used is at least one in nitric acid, phosphoric acid, hydrochloric acid and sulfuric acid.
7. a luminescent device, is characterized in that at least containing blue chip and fluorescent material claimed in claim 1.
8. a luminescent device, is characterized in that at least containing blue chip and fluorescent material claimed in claim 2.
9. a luminescent device, is characterized in that at least containing blue chip and fluorescent material claimed in claim 3.
CN2010102680336A 2010-08-31 2010-08-31 Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof CN102382655B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102680336A CN102382655B (en) 2010-08-31 2010-08-31 Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102680336A CN102382655B (en) 2010-08-31 2010-08-31 Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof

Publications (2)

Publication Number Publication Date
CN102382655A CN102382655A (en) 2012-03-21
CN102382655B true CN102382655B (en) 2013-12-11

Family

ID=45822496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102680336A CN102382655B (en) 2010-08-31 2010-08-31 Phosphorus-containing LED fluorescent powder, preparation method and prepared light-emitting device thereof

Country Status (1)

Country Link
CN (1) CN102382655B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107591325A (en) * 2017-09-08 2018-01-16 如皋市下原科技创业服务有限公司 A kind of production technology of diode

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1482208A (en) * 2002-09-13 2004-03-17 北京有色金属研究总院 Blue light-excitated white phosphor powder for LED and production method thereof
CN101182416A (en) * 2006-11-13 2008-05-21 北京有色金属研究总院 Aluminate phosphor containing divalent metal element as well as manufacturing method and luminescent device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8133461B2 (en) * 2006-10-20 2012-03-13 Intematix Corporation Nano-YAG:Ce phosphor compositions and their methods of preparation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1482208A (en) * 2002-09-13 2004-03-17 北京有色金属研究总院 Blue light-excitated white phosphor powder for LED and production method thereof
CN101182416A (en) * 2006-11-13 2008-05-21 北京有色金属研究总院 Aluminate phosphor containing divalent metal element as well as manufacturing method and luminescent device

Also Published As

Publication number Publication date
CN102382655A (en) 2012-03-21

Similar Documents

Publication Publication Date Title
Jia et al. Synthesis and photoluminescence properties of Ce 3+ and Eu 2+-activated Ca 7 Mg (SiO 4) 4 phosphors for solid state lighting
CN102851026B (en) Red light material for bi-primary-color white light LEDs (light-emitting diodes) and preparation method thereof
Guo et al. White-light emission from a single-emitting-component Ca 9 Gd (PO 4) 7: Eu 2+, Mn2+ phosphor with tunable luminescent properties for near-UV light-emitting diodes
CN1927996B (en) Fluorescent powder material, preparation method thereof and white light LED electric light source
CN1318540C (en) Blue light-excitated white phosphor powder for LED and production method thereof
CN102559177B (en) Nitrogen oxides luminescent material and preparation method thereof and lighting source made of same
JP5331981B2 (en) Silicate-based luminescent material with multiple emission peaks, method for preparing the luminescent material, and light emitting device using the luminescent material
CN101899308B (en) Metal nano particle-doped rare earth lanthanum aluminate light-emitting material and preparation method thereof
CN100590173C (en) Fluorescent powder and manufacturing method and electric light source produced thereby
CN100334184C (en) Synthesis of YAG luminescent material for white LED
Enhai et al. Luminescence properties of red phosphors Ca10Li (PO4) 7: Eu3+
WO2009003378A1 (en) A nitrogen oxide luminescent material, producing method and application of the same
CN101273108B (en) Silicate phosphor for uv and long-wavelength excitation and preparation method thereof
CN101624521B (en) Vanadate garnet type fluorescent material as well as preparation method and application thereof
CN104726101B (en) White light LEDs single-substrate white launches fluorophosphate fluorescent material and preparation method
CN1331982C (en) Phosphor powder of composite oxide in use for white light LED and fabricated electric light source
CN100403563C (en) LED with white light and fluorescent powder concerned and preparation thereof
CN103045256B (en) LED (Light Emitting Diode) red fluorescence material and luminescent device containing same
CN101921589A (en) Niobate or tantalite fluorescent material used for white light LED and preparation method thereof
CN102433114B (en) Fluorescent powder, and preparation method and application thereof
CN103395997B (en) A kind of white light LEDs rare earth doping transparent glass-ceramic and preparation method thereof
TWI530550B (en) Nitrogen oxide orange-red fluorescent substance, including its light-emitting film or light-emitting sheet and light-emitting device
Geng et al. Tunable luminescence and energy transfer properties in KCaGd (PO 4) 2: Ln 3+/Mn 2+(Ln= Tb, Dy, Eu, Tm; Ce, Tb/Dy) phosphors with high quantum efficiencies
CN100590172C (en) Siliceous LED fluorescent powder and manufacturing method and produced luminescent device
CN1062581C (en) Long persistence luminescent silicate material and its producing method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20130802

Address after: 100088, 2, Xinjie street, Beijing

Applicant after: Grirem Advanced Materials Co., Ltd.

Address before: 100088, 2, Xinjie street, Beijing

Applicant before: General Research Institute for Nonferrous Metals

Applicant before: Grirem Advanced Materials Co., Ltd.

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Free format text: FORMER OWNER: GRIREM ADVANCED MATERIALS CO., LTD.

Effective date: 20130802

Owner name: GRIREM ADVANCED MATERIALS CO., LTD.

Free format text: FORMER OWNER: BEIJING CENTRAL INST.OF THE NONFERROUS METAL

Effective date: 20130802

GR01 Patent grant
C14 Grant of patent or utility model