WO2011153715A1 - 氧化钇荧光粉及其制备方法 - Google Patents
氧化钇荧光粉及其制备方法 Download PDFInfo
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- WO2011153715A1 WO2011153715A1 PCT/CN2010/073891 CN2010073891W WO2011153715A1 WO 2011153715 A1 WO2011153715 A1 WO 2011153715A1 CN 2010073891 W CN2010073891 W CN 2010073891W WO 2011153715 A1 WO2011153715 A1 WO 2011153715A1
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- colloid
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- cerium oxide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7769—Oxides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
Definitions
- the present invention relates to the field of optoelectronics and illumination technology, and in particular to a cerium oxide phosphor and a preparation method thereof.
- Re is one or two selected from the group consisting of ruthenium and osmium
- M is one or more selected from the group consisting of silver, gold, platinum and palladium nanoparticles, 0 ⁇ x 0.05.
- Re is doped in Y 2 O 3 with a doping concentration of 0.1% to 10%; the ratio of the molar ratio of hydrazine to the sum of Re and Y moles is 0.00002: 1-0.01: 1 ; ⁇ 1- The ratio of the molar ratio of ⁇ ⁇ 1 ⁇ ⁇ to the sum of Re and Y moles is 0.01 : 1 ⁇ 2: 1.
- a method for preparing a cerium oxide phosphor comprises the following steps:
- Re is one or two selected from the group consisting of rare earth elements lanthanum and cerium, and M is selected from the group consisting of silver, gold, platinum, and palladium nanoparticles. One or several of them;
- the ⁇ ⁇ ⁇ 1 ⁇ ⁇ Colloid and Y M are added, after mixing Re colloid, a water bath and stirred to obtain a mixed colloid, the resulting mixture colloid after aging heat treatment, to obtain a yttrium oxide phosphor.
- the step S1 comprises the following steps: respectively, the zinc salt and the aluminum salt raw material are weighed, and the solvent is dissolved and then added.
- the stabilizer is formulated into a mixed solution of zinc ions and aluminum ions with a total molar concentration of 0.05 to 0.70 mol/L, and the mixed solution is stirred at 40 to 70 ° C for 4 to 8 hours to obtain a ⁇ ⁇ ⁇ 1 ⁇ ⁇ precursor solution, which is ⁇ ⁇ ⁇ 1 ⁇ ⁇ precursor solution is placed in an oven at 60 ⁇ 90 ° C for 40 ⁇ 60h to obtain ⁇ ⁇ ⁇ 1 ⁇ ⁇ colloid;
- the zinc salt is one or more selected from the group consisting of Zn(CH 3 COO) 2 '2H 2 0, Zn(N0 3 ) 2 '6H 2 0, ZnCl 2 '2H 2 0 and ZnS0 4 '7H 2 0 ;
- the salt is one or more selected from the group consisting of ⁇ 1( ⁇ 0 3 ) 3 ⁇ 9 ⁇ 2 0, A1C1 3 '6H 2 0 and A1 2 (S0 4 ) 3 ;
- the solvent is selected from the group consisting of C 3 H 8 0 2 and an aqueous ethanol solution One or two of them, the volume ratio of ethanol to deionized water in the aqueous ethanol solution ranges from 3:1 to 7:1;
- the stabilizer is selected from the group consisting of C 2 H 7 NO, C 4 H u N0 2 and C 6 H 15 One or more of 0 3 N.
- the step S2 comprises the following steps: S21, doping the concentration of Re in Y 2 0 3 to be 0.1 to 10%, weigh the raw material of cerium and the raw material of Re, and prepare the total molar concentration to be 0.1 mol/L to 2.00.
- a Y/Re solution of mol/L wherein, the Y, Re solution is an aqueous solution of Y, Re or ethanol;
- S22 the above Y, Re solution is taken, and the raw materials, complexing agent and surface active of ethanol and M are sequentially added.
- the agent is configured as an aqueous solution of alcohol of Y and Re; wherein, in the aqueous solution of ⁇ , Re, the volume ratio of water to alcohol is 1:1 to 9:1, and the total molar concentration of Y and Re is 0.1 to 1.0 mol/L.
- the ratio of the number of moles of the complexing agent to the sum of the molar numbers of Re and Y is 1:1 to 5:1, and the surfactant concentration is 0.05 to 0.20 mol/L; in a preferred embodiment, the hydrazine and Re are formulated.
- deionized water may be added to maintain the ratio of alcohol to water in the aqueous solution of Y and Re; S23, the aqueous solution of the above Y and Re in a water bath at 40 to 60 ° C and stirred for 4 to 6 hours, and finally placed at 60 to 90
- the oven is aged for 56 to 90 hours in a °C oven to obtain metal-containing nanoparticles M or ion state ⁇ !
- the raw materials of Y and the raw materials of Re are metal oxides, hydrochlorides, nitrates or oxalates respectively; metal oxides are Y 2 0 3 , Eu 2 0 3 , Tb 4 0 7 ; hydrochlorides are YC1 3 .7H 2 0, EuCl 3 , TbCl 3 -6H 2 0; nitrates are: ⁇ ( ⁇ 0 3 ) 3 ⁇ 6 ⁇ 2 0, Eu(N0 3 ) 3 '6H 2 0 , Tb(N0 3 ) 3 -6H 2 0;
- the raw material of M is silver, gold, platinum, palladium nanoparticles; the raw material of M is AgN0 3 , HAuCl 4 , 3 ⁇ 4PtCl 6 , H 2 PdCl 4 aqueous solution or alcohol solution;
- the agent is citric acid; the surfactant is one or more selected from the group consisting of polyethylene glycol
- the raw material when preparing the Y, Re aqueous solution, if the nitrate or the hydrochloride is used as the raw material, the raw material is directly dissolved in the container; if the metal oxide or the oxalate is used as the raw material, the temperature is 15 ° C to 100 ° Under heating and stirring, the metal oxide or oxalate is dissolved in a container with hydrochloric acid or nitric acid.
- step S3 the sum of the moles of Zn and A1 and the number of moles of Re and Y in the mixed colloid And the ratio range is 0.01: 1 ⁇ 2: 1; the water bath temperature is 15 ⁇ 80 °C, the stirring time is 1 ⁇ 4 hours; the aging is placed in the oven at 100 ⁇ 200 °C for 48 ⁇ 96 hours; the heat treatment is in the sputum , air atmosphere or reducing atmosphere under 800 ⁇ 1300 ° C treatment for 0.5 ⁇ 6 hours; reducing atmosphere for carbon powder reduction or nitrogen to hydrogen volume ratio of 95: 5 nitrogen hydrogen gas reduction.
- the heat treatment adopts a reducing atmosphere; in the cerium oxide phosphor, when Re is only cerium, the heat treatment adopts an air atmosphere.
- Metal nanoparticles are added to the cerium oxide phosphor doped with rare earth elements. Since the specific surface area of the metal nanoparticles is large, the internal quantum efficiency of the phosphor is improved by the surface plasmon coupling effect, thereby improving the luminous efficiency of the phosphor.
- the material is an oxide phosphor with a long service life; the phosphor can emit light of different wavelengths by changing the type and proportion of rare earth elements; the added ⁇ ⁇ ⁇ 1 ⁇ ⁇ further improves the conductivity of the phosphor Sex, thereby increasing the brightness of the phosphor.
- _ ⁇ ⁇ 1 ⁇ ⁇ zinc, the aluminum content is varied by changing the ⁇ ⁇ , further optimize the conductivity of the phosphor.
- the method has the advantages of simple preparation process, low equipment requirement and short preparation period, and the method has the feasibility of being practiced many times.
- Figure 1 is a flow chart of the preparation of yttrium oxide phosphor
- Fig. 2 is a spectrum diagram of a cerium oxide phosphor prepared by the present invention and a commercial rainbow phosphor excited by a cathode ray.
- SPP Surface Plasmon
- the electromagnetic field induced by SPPs not only limits the propagation of light waves in the sub-wavelength size structure, but also generates and manipulates electromagnetic radiation from the optical frequency to the microwave band, achieving active control of light propagation, increasing the optical density of the luminescent material and Enhance its spontaneous emission rate.
- the internal quantum efficiency of the luminescent material can be greatly improved, thereby improving the luminescence intensity of the material.
- cerium oxide phosphor having electrical conductivity and integrating the SP effect, and a method for preparing the cerium oxide phosphor.
- the phosphor colloid is prepared by the sol-gel method, and the conductive material and the metal nanoparticles are added into the phosphor colloid to improve the luminescence brightness of the prepared phosphor.
- a cerium oxide phosphor comprising Y 2 O 3 , a rare earth element Re, a metal nanoparticle M and ⁇ ⁇ ⁇ 1 ⁇ ⁇ , the chemical formula is:
- Re is one or two selected from the group consisting of ruthenium and osmium
- M is one or more selected from the group consisting of silver, gold, platinum and palladium nanoparticles, 0 ⁇ x 0.05.
- Re is doped in Y 2 O 3 with a doping concentration of 0.1% to 10%; the ratio of the molar ratio of ruthenium to the sum of Re and Y moles is 0.00002: 1-0.01 : 1 ; ⁇ 1- ⁇ ⁇ 1 ⁇ The ratio of the molar number of moles to the sum of the molar numbers of Re and Y is 0.01: 1 ⁇ 2: 1. Adding metal nanoparticles to the yttrium oxide phosphor doped with Re improves the luminous efficiency of the phosphor.
- the material is an oxide phosphor and has a long service life; by changing the type and ratio of doping Re, The phosphor can emit light of different wavelengths; the added conductive material ⁇ ⁇ ⁇ 1 ⁇ ⁇ further improves the conductivity of the phosphor, thereby improving the luminance of the phosphor.
- _ ⁇ ⁇ 1 ⁇ ⁇ zinc the aluminum content is varied by changing the ⁇ ⁇ , further optimize the conductivity of the phosphor.
- Aluminum salt selection Analytical pure aluminum nitrate ( ⁇ 1( ⁇ 0 3 ) 3 ⁇ 9 ⁇ 2 0 ), aluminum chloride ( A1C1 3 '6H 2 0 ), sulfuric acid Aluminum (A1 2 (S0 4 ) 3 ), etc.;
- Stabilizer selection analysis of pure monoethanolamine (C 2 H 7 NO ), diethanolamine (C 4 H u N0 2 ), triethanolamine (C 6 H 15 0 3 N );
- Solvent selection Analytically pure ethylene glycol oxime ether (C 3 H 8 0 2 ), ethanol solution (the ratio of ethanol to deionized water is (3 ⁇ 7): 1).
- the metal oxide raw materials are: Y 2 0 3 , Eu 2 0 3 , Tb 4 0 7 ;
- the hydrochloride raw materials are: YC1 3 '7H 2 0, EuCl 3 , TbCl 3 -6H 2 0;
- the nitrate raw materials are: ⁇ ( ⁇ 0 3 ) 3 ⁇ 6 ⁇ 2 0, Eu(N0 3 ) 3 '6H 2 0, Tb(N0 3 ) 3 -6H 2 0;
- the oxalate-based material is an oxalate capable of providing Y 3+ , Eu 3 + or Tb 3+ ;
- the solvent is a mixed solution of deionized water (3 ⁇ 40) or absolute ethanol (CH 3 CH 2 OH) and deionized water.
- the ratio of ethanol to deionized water in the mixed solution ranges from (1 to 9): 1 ;
- the complexing agent is analytically pure citric acid (C 6 H 8 CVH 2 0 );
- the surfactant is analytically pure polyethylene glycol 6000, polyethylene glycol 8000, polyethylene glycol 10000, polyethylene glycol 20000;
- the M raw material is a nanoparticle of Ag, Au, Pt, Pd, or a salt soluble in water or ethanol such as AgN0 3 , HAuCl 4 , 3 ⁇ 4PtCl 6 , H 2 PdCl 4 or the like.
- ⁇ ⁇ ⁇ 1 ⁇ ⁇ , 0 ⁇ ⁇ 0.05 weigh a certain amount of zinc salt and aluminum salt, dissolve the solvent and add stabilizer to prepare a mixed solution of zinc and aluminum with a total molar concentration of 0.05 ⁇ 0.70mol/L.
- a mixed solution of a water bath at 40 ⁇ 70 ° C while stirring 4 ⁇ 8h stirring to give a precursor solution the precursor solution was placed in an oven at 60-90 ° C to give aging 40 ⁇ 60h ⁇ 1- ⁇ ⁇ 1 ⁇ ⁇ colloid.
- the metal element in the Y and Re colloids is in a nanoparticle state
- the metal element in the Y and Re colloid is in an ionic state
- a holding Re Zn A1 and the number of moles of the number of moles of Y ratio ranges from 0.01: 1 to 2: 1 ⁇ ⁇ ⁇ 1 ⁇ ⁇ ⁇ colloid and the addition of Y, Re colloid mixed, 15 ⁇ 80 ° C water bath and After stirring for 1 to 4 hours, a mixed colloid is obtained, and the obtained mixed colloid is aged in an oven at 100 to 200 ° C for 48 to 96 hours, and dried at 800 to 1300 ° C in an air atmosphere or carbon powder reduction or nitrogen hydrogen. The gas is treated in a reducing atmosphere for 0.5 to 6 hours to obtain a cerium oxide phosphor having a nitrogen to hydrogen ratio of 95:5.
- the heat treatment employs a reducing atmosphere; and in the yttria phosphor, Re is only ruthenium, and the heat treatment uses an air atmosphere.
- the ionic state M is reduced to a nanoparticle state element during the heat treatment operation.
- Re is only ⁇ in the yttrium oxide phosphor
- the heat treatment uses an air atmosphere, but we have found that the ionic state of M is still reduced, and the nanoparticle state is obtained.
- 2 is a cerium oxide phosphor prepared by the present invention and a commercial rainbow phosphor excited by a cathode ray Spectrum.
- the photogram, b is the photogram of the commercial rainbow phosphor.
- the integral area of a is 1.49 times of the b integral area measured by Shimadzu RF5301PC optical language software.
- Example 1 prepared in Example 1 was added and the Ag nanoparticle ⁇ 1- ⁇ ⁇ 1 ⁇ ⁇ of Y 2 0 3: Eu phosphor emission efficiency than the phosphor with commercial rainbow significantly improved.
- the preparation method of the cerium oxide phosphor is specifically described below in conjunction with the examples:
- Tb doped 2% lmol/L Y And Tb aqueous solution 100mL. 12 mL of a 1.00 mol/I ⁇ Y, Tb aqueous solution was added, 28 mL of absolute ethanol was added as a solvent, 0.6 mL of a 0.001 mol/L Au nanoparticle solution was added, and 9.2227 g of citric acid and 5 g of polyethylene glycol were further added.
- Polyethylene glycol 10000 after stirring at 60 ° C water bath for 4 h, a clear Y, Eu precursor solution was obtained, and the obtained Y, Eu precursor solution was aged in a 90 ° C oven for 40 h to form a uniform Y, Eu colloid.
- Tb doped 2% lmol/L Y And Tb aqueous solution 100mL. 12 mL of a 1.00 mol/L aqueous solution of Y and Tb was weighed, 28 mL of absolute ethanol was added as a solvent, 0.24 mL of Pt nanoparticles with a concentration of 0.001 mol/L, and 9.2227 g of citric acid and 5 g of polyethylene glycol were added. After stirring at 60 ° C for 4 h, a clear Y, Tb precursor solution was obtained, and the obtained Y, Tb precursor solution was aged in an oven at 90 ° C for 56 h to form a uniform Y, Tb colloid.
- Polyethylene glycol 6000 after stirring at 60 ° C water bath for 4 h, a clear Y, Tb precursor solution was obtained, and the obtained Y and Tb precursor solution was aged in an oven at 80 ° C for 50 h to form a uniform ⁇ , Tb colloid.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US13/702,345 US8894883B2 (en) | 2010-06-12 | 2010-06-12 | Yttrium oxide phosphor mixture and preparation method thereof |
PCT/CN2010/073891 WO2011153715A1 (zh) | 2010-06-12 | 2010-06-12 | 氧化钇荧光粉及其制备方法 |
EP10852708.6A EP2581433B1 (en) | 2010-06-12 | 2010-06-12 | Yttrium oxide fluorescent powder and preparation method thereof |
CN201080066876.6A CN102906217B (zh) | 2010-06-12 | 2010-06-12 | 氧化钇荧光粉及其制备方法 |
JP2013513515A JP5599942B2 (ja) | 2010-06-12 | 2010-06-12 | 酸化イットリウム蛍光体およびその製造方法 |
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PCT/CN2010/073891 WO2011153715A1 (zh) | 2010-06-12 | 2010-06-12 | 氧化钇荧光粉及其制备方法 |
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WO2011153715A1 true WO2011153715A1 (zh) | 2011-12-15 |
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US (1) | US8894883B2 (zh) |
EP (1) | EP2581433B1 (zh) |
JP (1) | JP5599942B2 (zh) |
CN (1) | CN102906217B (zh) |
WO (1) | WO2011153715A1 (zh) |
Cited By (1)
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EP2896674A4 (en) * | 2012-09-11 | 2016-05-18 | Ocean S King Lighting Science&Technology Co Ltd | ZINCALUMINATE LIGHTING MATERIAL AND MANUFACTURING METHOD THEREFOR |
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CN103361052A (zh) * | 2013-08-05 | 2013-10-23 | 黑龙江大学 | Au/Y2O3:Eu3+复合纳米管的制备方法 |
CN108383531B (zh) * | 2018-05-15 | 2021-02-19 | 西北工业大学 | 拓扑发光体异质相掺杂的MgB2基超导体及其制备方法 |
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JPS5586877A (en) * | 1978-12-22 | 1980-07-01 | Nec Corp | Light-emitting material |
JPH0747732B2 (ja) * | 1987-12-05 | 1995-05-24 | 日亜化学工業株式会社 | 低速電子線励起螢光体 |
WO2000012649A1 (en) * | 1998-08-27 | 2000-03-09 | Superior Micropowders Llc | Phosphor powders, methods for making phosphor powders and devices incorporating same |
JP2001288467A (ja) * | 2000-04-06 | 2001-10-16 | Toshiba Corp | 酸化物複合体粒子とその製造方法、蛍光体とその製造方法、カラーフィルターとその製造方法、ならびにカラー表示装置 |
CN1239674C (zh) * | 2003-07-02 | 2006-02-01 | 中国科学院上海硅酸盐研究所 | 一种稀土掺杂的纳米级氧化钇基发光粉体的制备方法 |
KR100730122B1 (ko) * | 2004-12-24 | 2007-06-19 | 삼성에스디아이 주식회사 | 전도성 물질을 포함하는 이트륨계 형광체, 그의 제조방법및 이를 채용한 표시소자 |
KR20090004179A (ko) * | 2007-07-06 | 2009-01-12 | 삼성에스디아이 주식회사 | 금속 화합물로 안정화된 혼성화된 나노 형광체 막, 그 용도및 그 제조 방법. |
CN101298337B (zh) * | 2008-07-01 | 2011-07-20 | 上海大学 | Y2O3:Eu3+纳米球粉体的制备方法 |
CN101560389B (zh) * | 2009-05-14 | 2012-05-30 | 浙江理工大学 | 一种掺铽氧化钇绿光发光粉末的制备方法 |
CN101775278B (zh) | 2010-01-28 | 2013-10-16 | 海洋王照明科技股份有限公司 | 胶体包覆荧光粉及其制备方法 |
CN102812105B (zh) * | 2010-05-25 | 2014-11-05 | 海洋王照明科技股份有限公司 | 场发射用的荧光材料及其制备方法 |
CN102812106B (zh) * | 2010-05-31 | 2014-11-05 | 海洋王照明科技股份有限公司 | 含有导电氧化物的掺杂稀土元素的氧化钇发光薄膜及其制备方法 |
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- 2010-06-12 JP JP2013513515A patent/JP5599942B2/ja active Active
- 2010-06-12 CN CN201080066876.6A patent/CN102906217B/zh not_active Expired - Fee Related
- 2010-06-12 US US13/702,345 patent/US8894883B2/en active Active
- 2010-06-12 WO PCT/CN2010/073891 patent/WO2011153715A1/zh active Application Filing
- 2010-06-12 EP EP10852708.6A patent/EP2581433B1/en active Active
Non-Patent Citations (2)
Title |
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ALLIERI B. ET AL.: "Growth and Microstructural Analysis of Nanosized Y2O3 Doped with Rare-Earths", MATERIALS CHEMISTRY AND PHYSICS, vol. 66, no. 2-3, 2000, pages 164 - 171, XP055069094 * |
TAKAHASHI R. ET AL.: "Development of a New Combinatorial Mask for Addressable Ternary Phase Diagramming: Application to Rare Earth Doped Phosphors", APPLIED SURFACE SCIENCE, vol. 223, no. 1-3, 2004, pages 249 - 252, XP055069096 * |
Cited By (1)
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EP2896674A4 (en) * | 2012-09-11 | 2016-05-18 | Ocean S King Lighting Science&Technology Co Ltd | ZINCALUMINATE LIGHTING MATERIAL AND MANUFACTURING METHOD THEREFOR |
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US20130075662A1 (en) | 2013-03-28 |
CN102906217A (zh) | 2013-01-30 |
EP2581433A1 (en) | 2013-04-17 |
JP5599942B2 (ja) | 2014-10-01 |
JP2013531710A (ja) | 2013-08-08 |
EP2581433B1 (en) | 2017-01-18 |
CN102906217B (zh) | 2014-07-23 |
US8894883B2 (en) | 2014-11-25 |
EP2581433A4 (en) | 2015-01-21 |
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