CN101054523A - Red luminescence phosphor - Google Patents

Red luminescence phosphor Download PDF

Info

Publication number
CN101054523A
CN101054523A CNA2007101057492A CN200710105749A CN101054523A CN 101054523 A CN101054523 A CN 101054523A CN A2007101057492 A CNA2007101057492 A CN A2007101057492A CN 200710105749 A CN200710105749 A CN 200710105749A CN 101054523 A CN101054523 A CN 101054523A
Authority
CN
China
Prior art keywords
levigate
europiumsesquioxide
insulations
finished product
packing
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CNA2007101057492A
Other languages
Chinese (zh)
Inventor
王海容
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNA2007101057492A priority Critical patent/CN101054523A/en
Publication of CN101054523A publication Critical patent/CN101054523A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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 invention relates to a red luminous fluorescent powder, the formula of which is MaM'bM''dOe:Eux,Ry, wherein M is at least one of Li, Na, K and Rb, M' is at least one of Mg, Ca, Sr, Ba and Zn, M'' is at least one of Al, Si, B, P, F, Cl, Br and I, R is at least one of Ce, Dy, Nd, Pr, Ho, Er, Mn and Cr and 0.1<=a<=5, 0.1<=b<=5, 1<=d<=12, 1<=e<=25, 0.0001<=x<=0.5 and 0<=y<=0.5. The red luminous fluorescent powder in the invention is a composite oxide, prepared in high-temperature solid-phase method. The substrate contains no toxic or hazardous chemical components such as precious rare earth, cadmium and sulfer. The invention has the advantages of simple preparing process, low production cost, stable chemical properties, good luminous performance, high thermal-stability, wide excitation wavelength and capable of being effectively excited by ultraviolet light, purple light or blue light LED etc. The invention can be widely used in white light LED.

Description

A kind of red luminescence phosphor
Technical field
The present invention relates to a kind of red luminescence phosphor, particularly a kind of can effectively being excited and produce the fluorescent material of red emission by UV-light, purple light or blue-ray LED.
Background technology
White light-emitting diodes (W-LED, white-light-emitting diode) as a kind of junction semiconductor electroluminescent device, have that operating voltage is low, current consumption is few, light weight, volume is little, the life-span is long, radiationless, pollution-free, series of advantages such as luminescence response fast, shock resistance and security are good and receiving much concern, be referred to as the 4th generation the solid cold light source.White light LEDs is mainly realized white light by two kinds of approach at present: a kind of is the fluorescence conversion hysteria, promptly uses single led chip and phosphor combination luminous; Another kind method is to adopt red, green, blue three-color LED chip portfolio luminous.
White light LEDs has been subjected to showing great attention to of countries in the world as the green illumination light source of energy-conserving and environment-protective of new generation, utilize UV-light, purple light or blue-ray LED excitated fluorescent powder and produce the main flow that white light is present white light LEDs development, the fluorescent material development of technology has important effect to the development of white light LEDs, and its performance directly influences brightness, chromaticity coordinates, colour temperature and the color developing etc. of white light LEDs.The ultraviolet leds technology is still immature at present, and existing red fluorescence powder is relatively poor at the excitating performance of purple light or the luminous wave band of blue-ray LED, and luminous efficiency is lower, becomes the bottleneck of LED with fluorescent material and even white light LEDs development.The LED that has has researched and developed mainly contains Ca with red fluorescence powder 3(VO4) 2: Eu 3+, YVO 4: Eu 3+, Y 2O 3: Eu 3+, Bi 3+, Y 2O 2S:Eu 3+, CaO:Eu 3+, CaMoO 4: Eu 3+, (Gd, Y, Eu) 2(MoO 4) 3: Sm 3+, (Sr, Ca) S:Eu 2+, Ca 5(SiO 4) 2Cl 2: Eu 2+, Sr 2Si 5N 8: Eu 2+All also do not reach requirement of actual application Deng, these red fluorescence powders luminous efficiency, thermostability and chemical stability under purple light or blue-ray LED excite, so the LED of development of new becomes the focus of domestic and international research with red luminescence phosphor.
Summary of the invention
The objective of the invention is at the problems referred to above, propose that a kind of chemical property is stable, good luminous performance, Heat stability is good, can effectively be excited by UV-light, purple light or blue-ray LED and produce the fluorescent material of red emission.
The objective of the invention is to be achieved through the following technical solutions:
The chemical formula of a kind of red luminescence phosphor of the present invention is: M aM ' bM " dO e: Eu x, R y,
Wherein, M is at least a among Li, Na, K, the Rb;
M ' is at least a among Mg, Ca, Sr, Ba, the Zn;
M " is at least a among Al, Si, B, P, F, Cl, Br, the I;
R is at least a among Ce, Dy, Nd, Pr, Ho, Er, Mn, the Cr;
0.1≤a≤5，0.1≤b≤5，1≤d≤12，1≤e≤25，0.0001≤x≤0.5，0≤y≤0.5。
Compared with prior art, red luminescence phosphor of the present invention is a kind of composite oxide material, do not contain poisonous and harmful Chemical Composition such as valuable rare earth and cadmium, sulphur in the matrix, the advantage that have that preparation technology is simple, production cost is low, chemical property is stable, good luminous performance, Heat stability is good, excitation wavelength range are wide, can effectively be excited by UV-light, purple light or blue-ray LED can be widely used in white light LEDs.
Ultraviolet leds of the present invention is meant that emission wavelength is the photodiode of 200nm～380nm;
Purple LED of the present invention is meant that emission wavelength is the photodiode of 380nm～420nm;
Blue-ray LED of the present invention is meant that emission wavelength is the photodiode of 420nm～490nm.
Red luminescence phosphor of the present invention can adopt prepared such as high temperature solid phase synthesis, sol-gel method, microwave sintering synthesis method, the technological process of its high temperature solid phase synthesis is: ground and mixed is even in proportion with various raw materials, in air or reducing atmosphere in 500～1600 ℃ of following sintering 1～10 hour, with the gained sinter levigate the finished product.
Description of drawings
Fig. 1 is the emmission spectrum figure of fluorescent material under the 380nm wavelength excites in the embodiment of the invention 1
Fig. 2 is the exciting light spectrogram of fluorescent material in 200～550nm wavelength region in the embodiment of the invention 1
Embodiment
Embodiment 1: take by weighing salt of wormwood (K 2CO 3) 0.7g, Strontium carbonate powder (SrCO 3) 4.4g, aluminum oxide (Al 2O 3) 0.55g, boric acid (H 3BO 3) 0.13g, europiumsesquioxide (Eu 2O 3) 0.04g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.Its emmission spectrum is seen Fig. 1, and main emission peak presents very strong broadband emission in 580～670nm wavelength region about 625nm, totally present pure red emission; Its excitation spectrum is seen Fig. 2, and main excitation peak is a broadband excitation spectrum near 380nm, can effectively be excited by the UV-light in 250～490nm scope, purple light or blue light.
Embodiment 2: take by weighing salt of wormwood (K 2CO 3) 0.7g, Strontium carbonate powder (SrCO 3) 4.4g, aluminum oxide (Al 2O 3) 0.55g, boric acid (H 3BO 3) 0.13g, europiumsesquioxide (Eu 2O 3) 0.04g, Manganse Dioxide (MnO 2) 0.1g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 3: take by weighing Quilonum Retard (Li 2CO 3) 0.74g, Strontium carbonate powder (SrCO 3) 2.9g, Secondary ammonium phosphate ((NH 4) 2HPO 4) 2.8g, europiumsesquioxide (Eu 2O 3) 0.03g, Manganse Dioxide (MnO 2) 0.15g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1000 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 4: take by weighing Quilonum Retard (Li 2CO 3) 0.74g, lime carbonate (CaCO 3) 2.0g, Secondary ammonium phosphate ((NH 4) 2HPO 4) 2.8g, europiumsesquioxide (Eu 2O 3) 0.03g, Manganse Dioxide (MnO 2) 0.15g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1000 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 5: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, lime carbonate (CaCO 3) 1.8g, silicon-dioxide (SiO 2) 1.3g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.03g, Dysprosium trioxide (Dy 2O 3) 0.15g, cerium dioxide (CeO 2) 0.03g, Manganse Dioxide (MnO 2) 0.2g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1150 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 6: take by weighing Quilonum Retard (Li 2CO 3) 0.37g, lime carbonate (CaCO 3) 1.8g, silicon-dioxide (SiO 2) 1.3g, aluminum oxide (Al 2O 3) 1.5g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.02g, cerium dioxide (CeO 2) 0.03g, Manganse Dioxide (MnO 2) 0.2g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1150 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 7: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, Strontium carbonate powder (SrCO 3) 2.9g, magnesiumcarbonate (MgCO 3) 0.78g, Secondary ammonium phosphate ((NH 4) 2HPO 4) 1.5g, boric acid (H 3BO 3) 0.7g, europiumsesquioxide (Eu 2O 3) 0.04g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1000 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 8: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, Strontium carbonate powder (SrCO 3) 2.9g, magnesiumcarbonate (MgCO 3) 1.5g, Secondary ammonium phosphate ((NH 4) 2HPO 4) 5.6g, europiumsesquioxide (Eu 2O 3) 0.03g, Manganse Dioxide (MnO 2) 0.15g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1000 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 9: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, magnesiumcarbonate (MgCO 3) 4.7g, aluminum oxide (Al 2O 3) 1.05g, silicon-dioxide (SiO 2) 3.9g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.03g, Dysprosium trioxide (Dy 2O 3) 0.15g, Manganse Dioxide (MnO 2) 0.15g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1200 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 10: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, Strontium carbonate powder (SrCO 3) 2.9g, magnesiumcarbonate (MgCO 3) 0.78g, aluminum oxide (Al 2O 3) 1.05g, silicon-dioxide (SiO 2) 1.9g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.04g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1200 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 11: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, lime carbonate (CaCO 3) 2.8g, aluminum oxide (Al 2O 3) 1.05g, silicon-dioxide (SiO 2) 1.9g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.03g, cerium dioxide (CeO 2) 0.03g, Manganse Dioxide (MnO 2) 0.15g, after abundant ground and mixed was even, the alumina crucible roasting in reducing atmosphere of packing into was in 1200 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 12: take by weighing Quilonum Retard (Li 2CO 3) 0.74g, magnesiumcarbonate (MgCO 3) 1.65g, aluminum oxide (Al 2O 3) 1.05g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 13: take by weighing Quilonum Retard (Li 2CO 3) 0.74g, lime carbonate (CaCO 3) 2.0g, aluminum oxide (Al 2O 3) 1.05g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 14: take by weighing Quilonum Retard (Li 2CO 3) 0.74g, lime carbonate (CaCO 3) 2.0g, aluminum oxide (Al 2O 3) 2.1g, Secondary ammonium phosphate ((NH 4) 2HPO 4) 2.8g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.1g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 15: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, lime carbonate (CaCO 3) 1.7g, calcium chloride (CaCl 2) 0.92g, aluminum oxide (Al 2O 3) 2.9g, boric acid (H 3BO 3) 0.31g, europiumsesquioxide (Eu 2O 3) 0.07g, bismuth oxide (Bi 2O 3) 0.06g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 16: take by weighing Quilonum Retard (Li 2CO 3) 0.07g, lime carbonate (CaCO 3) 1.6g, magnesium fluoride (MgF 2) 0.25g, silicon-dioxide (SiO 2) 1.2g, aluminum oxide (Al 2O 3) 2.24g, boric acid (H 3BO 3) 0.19g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1100 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 17: take by weighing lime carbonate (CaCO 3) 2.0g, Quilonum Retard (Li 2CO 3) 1.5g, silicon-dioxide (SiO 2) 1.3g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 950 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 18: take by weighing lime carbonate (CaCO 3) 2.0g, yellow soda ash (Na 2CO 3) 2.15g, silicon-dioxide (SiO 2) 1.3g, aluminum oxide (Al 2O 3) 3.3g, europiumsesquioxide (Eu 2O 3) 0.1g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 1000 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 19: take by weighing lime carbonate (CaCO 3) 2.0g, Quilonum Retard (Li 2CO 3) 1.5g, silicon-dioxide (SiO 2) 1.3g, boric acid (H 3BO 3) 1.25g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 700 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 20: take by weighing calcium dihydric pyrophosphate (CaH 2P 2O 7) 4.4g, Quilonum Retard (Li 2CO 3) 1.5g, boric acid (H 3BO 3) 1.25g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 700 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.
Embodiment 21: take by weighing calcium dihydric pyrophosphate (CaH 2P 2O 7) 4.4g, Calcium Fluoride (Fluorspan) (CaF 2) 0.78g, Quilonum Retard (Li 2CO 3) 1.5g, europiumsesquioxide (Eu 2O 3) 0.07g, after abundant ground and mixed was even, the alumina crucible roasting in air of packing into was in 700 ℃ of insulations 3 hours, with the levigate the finished product that get of gained sinter.

Claims (2)

1, a kind of red luminescence phosphor is characterized in that: its chemical formula is: M aM ' bM " dO e: Eu x, R y,
Wherein, M is at least a among Li, Na, K, the Rb;
M ' is at least a among Mg, Ca, Sr, Ba, the Zn;
M " is at least a among Al, Si, B, P, F, Cl, Br, the I;
R is at least a among Ce, Dy, Nd, Pr, Ho, Er, Mn, the Cr;
0.1≤a≤5，0.1≤b≤5，1≤d≤12，1≤e≤25，0.0001≤x≤0.5，0≤y≤0.5。
2, a kind of red luminescence phosphor according to claim 1 is characterized in that: described red luminescence phosphor can effectively be excited by UV-light, purple light or blue-ray LED and produce red emission.
CNA2007101057492A 2007-05-29 2007-05-29 Red luminescence phosphor Pending CN101054523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007101057492A CN101054523A (en) 2007-05-29 2007-05-29 Red luminescence phosphor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2007101057492A CN101054523A (en) 2007-05-29 2007-05-29 Red luminescence phosphor

Publications (1)

Publication Number Publication Date
CN101054523A true CN101054523A (en) 2007-10-17

Family

ID=38794581

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007101057492A Pending CN101054523A (en) 2007-05-29 2007-05-29 Red luminescence phosphor

Country Status (1)

Country Link
CN (1) CN101054523A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101864303A (en) * 2010-06-13 2010-10-20 中山大学 Alkali metal alkaline earth metal phosphate phosphor and preparation method thereof
KR101047775B1 (en) 2008-09-23 2011-07-07 주식회사 포스포 Phosphor and Light Emitting Device
CN102173579A (en) * 2010-11-29 2011-09-07 天津理工大学 Preparation method and application of light-conversion glass material used for LED (light-emitting diode)
CN104804731A (en) * 2015-05-21 2015-07-29 常州工程职业技术学院 Eu<2+>-activated magnesium potassium silicate blue-green fluorescent powder as well as preparation method and application thereof
CN105001860A (en) * 2015-08-11 2015-10-28 王海容 Red fluorophor and application thereof
JPWO2014104143A1 (en) * 2012-12-26 2017-01-12 三菱化学株式会社 Phosphor, phosphor-containing composition and light emitting device using the phosphor, and image display device and illumination device using the light emitting device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101047775B1 (en) 2008-09-23 2011-07-07 주식회사 포스포 Phosphor and Light Emitting Device
CN101864303A (en) * 2010-06-13 2010-10-20 中山大学 Alkali metal alkaline earth metal phosphate phosphor and preparation method thereof
CN102173579A (en) * 2010-11-29 2011-09-07 天津理工大学 Preparation method and application of light-conversion glass material used for LED (light-emitting diode)
CN102173579B (en) * 2010-11-29 2013-04-10 天津理工大学 Preparation method and application of light-conversion glass material used for LED (light-emitting diode)
JPWO2014104143A1 (en) * 2012-12-26 2017-01-12 三菱化学株式会社 Phosphor, phosphor-containing composition and light emitting device using the phosphor, and image display device and illumination device using the light emitting device
CN104804731A (en) * 2015-05-21 2015-07-29 常州工程职业技术学院 Eu<2+>-activated magnesium potassium silicate blue-green fluorescent powder as well as preparation method and application thereof
CN104804731B (en) * 2015-05-21 2016-10-12 常州工程职业技术学院 Magnesium silicate potassium blue-green fluorescent powder that a kind of Eu2+ activates and its preparation method and application
CN105001860A (en) * 2015-08-11 2015-10-28 王海容 Red fluorophor and application thereof

Similar Documents

Publication Publication Date Title
Hakeem et al. Crystal structure and photoluminescence properties of novel garnet Y2-xLaCaGa3ZrO12: xLn3+ (Ln= Eu and Tb) phosphors
CN101921589A (en) Niobate or tantalite fluorescent material used for white light LED and preparation method thereof
CN101851508B (en) Europium activated silicate green fluorescent powder and application thereof in white light emitting diode
CN101962542B (en) Niobate-based red fluorescent powder for white LED as well as preparation method and application thereof
CN102241982B (en) Light-emitting diode (LED) fluorescent powder and preparation method thereof
CN101054520A (en) Red luminescence phosphor
CN111234814B (en) Mn (manganese)4+Doped nitrogen oxide red fluorescent powder and preparation method thereof
CN103205253A (en) Columbate or tantalate fluorescence material used in white-light LED, and its preparation method
WO2007018345A1 (en) Yellow phosphor and white light emitting device comprising it
CN101054521A (en) Red luminescence phosphor
CN101054523A (en) Red luminescence phosphor
Cheng et al. Synthesis and luminescence property of Sr3SiO5: Eu2+ phosphors for white LED
CN102517016A (en) Solid solution fluorescent light-emitting material for blue light excitation and preparation method thereof
CN101307228B (en) Chlorine-aluminosilicate fluorescent powder and method for preparing same
CN101402857A (en) Red luminous material for LED and producing process thereof
CN103146381B (en) Aluminate red phosphor activated by manganese ion and preparation method thereof
CN1255506C (en) Boron-containing luminescent powder for LED, preparing method thereof and electric light source therefrom
CN103031125A (en) Niobate or tantalite fluorescent material for white LED (Light-Emitting Diode), and preparation method of niobate or tantalite fluorescent material
CN101486910B (en) Green phosphor for white light LED and preparation thereof
CN103045267A (en) Nitride fluorescent powder and preparation method thereof, luminescent device containing fluorescent powder
CN1227325C (en) Violet light excitated bicomponent three basic colour fluorescent powder and its preparation method
KR101602313B1 (en) NASICON-structure phosphor and light emitting diodes including the NASICON-structure phosphor for solid-state lighting applications
CN102604633A (en) Tetratungstate red phosphor powder and preparation method thereof
CN104962286A (en) Garnet-structure multiphase fluorescent material and preparation method thereof
CN102286281B (en) Aluminate-based red fluorescent material and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication