WO1998006793A1 - Procede de preparation de luminophore a base d'aluminate - Google Patents

Procede de preparation de luminophore a base d'aluminate Download PDF

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Publication number
WO1998006793A1
WO1998006793A1 PCT/JP1997/002739 JP9702739W WO9806793A1 WO 1998006793 A1 WO1998006793 A1 WO 1998006793A1 JP 9702739 W JP9702739 W JP 9702739W WO 9806793 A1 WO9806793 A1 WO 9806793A1
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Prior art keywords
aluminate
phosphor
based phosphor
alumina
producing
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PCT/JP1997/002739
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English (en)
Japanese (ja)
Inventor
Hirofumi Moriyama
Tomofumi Moriyama
Yukie Kobayashi
Original Assignee
Kabushiki Kaisha Tokyo Kagaku Kenkyusho
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Publication date
Priority claimed from JP22466196A external-priority patent/JP3599913B2/ja
Priority claimed from JP22466296A external-priority patent/JP3599914B2/ja
Application filed by Kabushiki Kaisha Tokyo Kagaku Kenkyusho filed Critical Kabushiki Kaisha Tokyo Kagaku Kenkyusho
Publication of WO1998006793A1 publication Critical patent/WO1998006793A1/fr

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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
    • C09K11/7792—Aluminates
    • 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
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7734—Aluminates
    • 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
    • C09K11/7774—Aluminates

Definitions

  • the present invention relates to, for example, an aluminate-based phosphor used for a three-wavelength fluorescent lamp that emits blue, blue-green, or green light when excited by ultraviolet light, or a long-time excited by ultraviolet light or visible light.
  • the present invention relates to a method for producing an aluminate-based phosphor having an afterglow characteristic, which is used as a phosphorescent material having an afterglow property.
  • fluorescent lamps Since the production of fluorescent lamps began in 1938, improvements have been made in characteristics such as luminous brightness, luminous efficiency, color rendering, and lifespan. In recent years, fluorescent lamps that are close to natural light with improved color rendering properties, so-called “three-wavelength fluorescent lamps,” have been developed by concentrating fluorescence strongly around the wavelengths of 450 nm (blue), 540 nn (green), and 610 nm (red). Widely used.
  • the three-wavelength fluorescent lamp includes, for example, a barium-magnesium-aluminum phosphor as a blue phosphor, a cerium-magnesium-aluminum phosphor as a green phosphor, and a yttrium oxide phosphor as a red phosphor.
  • the body has been used.
  • aluminate phosphors of blue or green phosphors magnesium (Mg), barium (Ba), and strontium (Sr) constituting an aluminate are added to an alumina powder.
  • Calcium (C a), zinc (Z n) or cerium (C e) compound powder, and a small amount of europium (E u), manganese as an activator for producing luminescence (Mn> and terbium (Tb) are used.
  • the mixed raw material is used.
  • the mixed raw material is fired at a high temperature exceeding ⁇ , ⁇ and then pulverized. It is processed and used as a phosphor for lamps.
  • the characteristics of the phosphor are influenced by the primary particle diameter of the phosphor particles, and it is well known that the larger the phosphor particles, the higher the light efficiency. It is necessary to have good applicability, and from that point, a phosphor having a primary particle diameter of 4 to 10 ⁇ is usually used as a phosphor for a three-wavelength fluorescent lamp. In the case of luminous phosphors, it is usually 20 ⁇ ! Phosphors with a primary particle size of 5050 ⁇ m are used. Further, it is well known that the emission characteristics of phosphors are greatly affected by trace impurities.
  • high-purity alumina powder such as high-purity ⁇ -alumina or high-purity ⁇ -alumina is used as the main raw material for the aluminate serving as the base material of the aluminate phosphor. Since these high-purity alumina powders have a fine primary particle diameter, usually less than 1 m, and are highly agglomerated, the phosphor after firing forms hard aggregated particles.
  • phosphors synthesized using these high-purity alumina powders are powders with a wide particle size distribution from submicron to about 100 ⁇ m.
  • the aluminate-based phosphor uses a fine high-purity alumina raw material having a primary particle diameter of less than 1 ⁇ as the raw material alumina, and grows from submicron to approximately 200 / um fluorescent particles by high-temperature firing. Therefore, the phosphor particles after firing have a wide particle size distribution and are strongly aggregated, and need to be ground. In addition, it is essential to remove fine particles and coarse particles by classification. As a result, there have been major problems such as degradation of light emission characteristics due to destruction of primary particles and unevenness of crystallinity due to pulverization, and a low yield as phosphor particles.
  • aluminate-based phosphors that are easy to be crushed, contain few particles, have excellent emission characteristics, and have a high product yield have not yet been obtained for both phosphors for three-wavelength fluorescent lamps and phosphorescent phosphors. Absent.
  • An object of the present invention is to provide a method for producing an aluminate-based phosphor, which is easy to pulverize and has a small amount of fine particles, has excellent emission characteristics, and has a high product yield.
  • a substantially crushed surface having a primary particle diameter of 0.3 / xm or more and 30 ⁇ or less is used as a raw material alumina in the synthesis of an aluminate-based phosphor. It uses ⁇ -alumina powder that does not have it.
  • the aluminate-based phosphor has a general formula
  • an aluminate-based phosphor has a general formula
  • Tb terbium
  • Mn manganese
  • M 2 is at least one metal element selected from magnesium (Mg) and zinc (Zn),
  • d is 0.9 to 1.1
  • e is 0.9 to 1.1
  • f is 5.5.
  • an aluminate-based phosphor is represented by the following general formula:
  • Ma is a group consisting of strontium (Sr), calcium (Ca), and barium (Ba); a compound consisting of at least one metal element selected from the group consisting of at least one metal element; h is 0.5 to 1.1
  • Eu europium
  • the aluminate-based phosphor is represented by the general formula
  • M 3 strontium (S r), calcium (C a), barium ( ⁇ et compounds comprising at least one or more metal element selected consisting of B a), h is 1.1 to 0.5) a composite oxide represented by This is an aluminate phosphor having afterglow characteristics in which at least one metal element selected from lead (Pb), zinc (Zn) and bismuth (Bi) is added to a substrate.
  • alumina as a raw material alumina, as an ⁇ -alumina powder having a primary particle diameter of 0.3 / tm or more and having substantially no fracture surface of 30 ⁇ or less, a method using an alumina purity of 99.9% by weight or more is used.
  • the present invention is excellent in emission characteristics because of and less fine particles easily crushed, a method of manufacturing a product yield good aluminate-based phosphor, the raw material of the alpha - in the alumina - with the following particle size 0.3 im or Use ⁇ -alumina powder with substantially no crushed surface of 30 #m or less.
  • ⁇ -anoremina powder for example, ⁇ -alumina sold by Sumitomo Chemical Co., Ltd. under the trade name of Advanced Alumina can be used (JP-A-6-191833, JP-A-6-191835). No., JP-A-6-191836).
  • ⁇ -alumina powders having a primary particle size of 0.3 / ⁇ ID or more and having substantially no crushed surface of 30 ⁇ or less have almost no agglomerated particles and a sharp particle size distribution.
  • the ⁇ -alumina particles form aluminate with magnesium ( ⁇ g), barium (Ba), strontium (Sr), calcium (Ca), zinc (Zn), and lead (Pb).
  • Reaction with a compound such as bismuth (Bi) or cerium (Ce) resulted in the formation of aluminate-based phosphor particles having few fine particles and little aggregation.
  • this ⁇ -alumina powder has almost no agglomerated particles. Since it does not have fine particles, it has good dispersibility, and magnesium (Mg), norium (Ba), strontium (Sr), calcium (Ca), sub-f & (Zn), lead (Pb ), Bismuth (Bi), or cerium (Ce) are mixed homogeneously with the compound powder, so it is considered that the phosphor will be less likely to generate fine particles.
  • magnesium magnesium
  • norium (Ba), strontium (Sr), calcium (Ca), sub-f & (Zn), lead (Pb ), Bismuth (Bi), or cerium (Ce) are mixed homogeneously with the compound powder, so it is considered that the phosphor will be less likely to generate fine particles.
  • M g magnesium (M g) constituting the aluminate
  • burrs ⁇ beam (B a), strontium (S r), calcium (Ca), nitrous f & (Zn), lead (P Reaction with compound powder such as b), bismuth (Bi) or cerium (Ce) becomes difficult.
  • the alumina purity of ⁇ -alumina is 99.9% by weight or more.
  • oxides, or hydroxides, carbonates, nitrates, halides and the like which can be decomposed at high temperatures to form oxides can be used.
  • Aluminate-based phosphor becomes general formula aMiO ⁇ bMgO ⁇ c A 1 2 0 3 europium (Eu) to the double focus oxide substrate represented alone or europium (Eu) manganese (M n) activated
  • Eu europium
  • M n manganese
  • aluminate-based phosphor is formula a (B a, S r) 0 - bMgO ⁇ c A 1 2 0 europium complex oxide substrate represented by 3 (Eu), or a europium (E u) Manganese
  • a is in the range of 0.9 to 1, 7, b is 1.5 to 2.1, and c is 8.
  • aluminate-based phosphor is formula a (B a, C a) 0 - europium (E u) to the composite oxide substrate represented by cA l 2 0 3, or europium (E u) and manganese (
  • a is in the range of 1.0 to 1.5 and c is in the range of 6.
  • europium complex oxide substrate aluminate-based phosphor represented by the general formula a S r O ⁇ c A 1 2 0 3 (Eu) is added compound as an activator, from a 3.9 4.1 and c are preferably in the range of 7.
  • the aluminate-based phosphor is represented by d C e O, ⁇ eM 2 ⁇ ⁇ ⁇ ⁇ ⁇ in the general formula.
  • d ranges from 0.9 to 1.1
  • e ranges from 0.9 to 1.1
  • f ranges from 5.5. Is preferred.
  • Raw materials such as europium (Eu), manganese (Mn), and terbium (Tb) that act as activators for emitting light include oxides, hydroxides, carbonates, nitrates, and halides at high temperatures. Those which can be decomposed into oxides can be used.
  • aluminate-based phosphor is formula a (B a, S r) europium complex oxide substrate represented by 0 ⁇ bMgO ⁇ c A 1 2 ⁇ 3 (Eu) alone or europium (In the case of an aluminate-based phosphor to which an activator consisting of Eu) and manganese (Mn) is added, the amount of europium (Eu) added is from 0.01 a to 0.15 a, and the amount of manganese (Mn) is 0.15 a.
  • b It is preferably in the following range.
  • aluminate-based phosphor is formula a (B a, C a) 0 - cA l 2 O europium complex oxide substrate represented by a (E u) alone, or a europium (E u) manganese
  • the amount of europium (Eu> 1) is 0.011 A, 0.15 a, manganese (M n) It is preferable that the amount of addition be in the range of 0.20 a or less.
  • aluminate-based phosphor of the general formula a S r O ⁇ c A 1 2 0 europium (E u) to the composite oxide substrate represented by 3 is added, aluminate-based phosphor as an activator
  • the amount of europium (Eu) added is preferably in the range of 0.02a to 0.06a.
  • the composite oxide substrate aluminate-based phosphor is shown by the formula dC E_ ⁇ 1 5 ⁇ eM z O ⁇ ⁇ ⁇ 1 2 ⁇ 3 (T b) and ⁇ or manganese (M n)
  • Tb aluminate-based phosphor to which an activator is added
  • Mn manganese
  • a flux to accelerate the reaction to the phosphor particles.
  • the flux for example, boron oxide can be used.
  • the aluminate-based phosphor according to the present invention obtained using ⁇ -alumina powder having a primary particle diameter of 0.3 ⁇ m or more and 30 ⁇ m or less and having substantially no crushed surface as a raw material, is easy to pulverize. In addition, it is very useful as a three-wavelength fluorescent lamp because it has good emission characteristics due to the small amount of fine particles and high product yield.
  • any phosphor containing an aluminate in a mother crystal may be used.
  • an aluminate-based phosphor having afterglow characteristics of several tens of minutes to several hours described in Japanese Patent No. 254 3825 and Japanese Patent Publication No. 7-112574 is exemplified.
  • Aluminate-based phosphor having afterglow characteristics having afterglow characteristics, the formula hMhO ⁇ A 1 2 Oa [ ⁇ 3 strontium (S r), at least one selected from the group consisting of calcium (Ca), barium (B a) Compounds composed of the above metal elements, h is 0.5 to 1.1].
  • europium complex oxide substrate phosphorescent aluminate clay based phosphor represented by formula h S rO 'A l 2 ⁇ 3 (Eu) is as an activator, was further added as dysprosium co activator
  • h is preferably in the range of 0.9 to 1.1.
  • europium (Eu) is a composite oxide substrate represented aluminate phosphor is by the formula h C a O ⁇ A 1 2 O a having afterglow characteristics, with further Neojiu arm co
  • h is preferably in the range of 0.9 to 1.1.
  • a europium complex oxide substrate phosphorescent aluminate-based phosphor is shown by the formula h S r O ⁇ A 1 2 0 3 (Eu) is an activator, further Jisupuroshiu
  • the amount of europium (Eu) is preferably in the range of 0.1 to 0.1 lh, and the amount of dysprosium is preferably in the range of 0.02 to 0.2 h.
  • the composite oxide substrate phosphorescent aluminate phosphor represented by the general formula hC aO ⁇ ⁇ 1 2 0 3 europium (Eu) is as an activator, is added as further Neojiumu is coactivator
  • the addition amount of europium (Eu) is in the range of 0.01 h to 0.1 lh, and the addition amount of neodymium is in the range of 0.02 h to 0.2 h. It is not preferable to add an activator in a smaller amount or a larger amount than the above preferable range because the luminance is reduced.
  • the product obtained by the above method is pulverized using a ball mill, a jet mill, or the like, and then washed, but classified if necessary.
  • a flux can be added to promote the reaction to the phosphor particles.
  • the flux for example, boron oxide can be used.
  • the aluminate-based phosphor for a phosphorescent material according to the present invention obtained by using an ⁇ -alumina powder having a sub-particle diameter of 0.3 / 1 n or more and having substantially no crushed surface of 30 ⁇ m or less as a raw material, It is very useful as a phosphorescent material because it has excellent afterglow characteristics due to easy pulverization and few particles, and high product yield.
  • FIG. 1 is a drawing showing the particle shape of ⁇ -alumina powder (AA2) by a scanning electron micrograph.
  • FIG. 2 is a drawing showing the particle shape of the ct-alumina powder (A A3) by a scanning electron micrograph.
  • FIG. 3 is a drawing showing the particle shape of ⁇ -alumina powder (AA5) by a scanning electron micrograph.
  • FIG. 4 is a drawing showing the particle shape of ⁇ -alumina powder (AA10) by a scanning electron micrograph.
  • FIG. 5 is a drawing showing the particle shape of ⁇ -alumina powder (R ⁇ -40) by a scanning electron micrograph.
  • FIG. 6a and 6b are drawings showing the particle shape of the phosphor obtained by using a ⁇ 10 in a scanning electron micrograph, wherein FIG. 6a is 2,000 times and FIG. 6b is 5,000 times. .
  • FIG. 7a and 7b are drawings showing the particle shape of the phosphor using RA-40 by a scanning electron micrograph.
  • FIG. 7a is 2,000 times
  • FIG. 7b is 5,000 times.
  • the primary particle size of ⁇ -alumina powder was determined by selecting 80 to 100 particles from a SEM (scanning electron microscope, JEOL Ltd .: ⁇ -300) photograph of ⁇ -alumina powder. Image analysis was performed to determine the average value of the circle equivalent diameter.
  • the equivalent circle diameter is a value converted into the diameter of a perfect circle having the same area.
  • the average particle size (X50) and particle size distribution (X9 ⁇ 10) of the aluminate-based phosphor were measured using an S ⁇ laser micron sizer (manufactured by Seishin Enterprise) using the laser scattering method as the measurement principle. Measured.
  • the particle shape of the aluminate phosphor was photographed using a scanning electron microscope (manufactured by JEOL Ltd .: T122OA).
  • the afterglow intensity of the aluminate-based phosphor having the afterglow characteristic was measured by the following method.
  • the sample container was filled with the phosphor powder (diameter: 38 mm, thickness: 5 mm), stored in a dark place for 16 hours, and irradiated with a fluorescent lamp placed at a height of 15 mm for the sample container for 10 minutes.
  • the afterglow intensity after a lapse of a certain time after the irradiation was stopped was measured using a luminance meter (manufactured by Matsushita Electronics Industrial Lighting R & D Center: 5712) and a phototube (Hamamatsu Photonics: R847).
  • the Hi-Alumina powder having a primary particle diameter of 0.3 ⁇ m or more and having substantially no crushed surface of 30 / i ⁇ or less used in this example includes “Advanced Advanced Rem Alumina powder having the physical properties shown in Tables 1 and 2 sold under the trade name of Na J was used.
  • an alumina powder of RA-40 commercial product; manufactured by Iwatani Chemical Industry Co., Ltd. was used.
  • the particle shapes of each ⁇ -alumina powder with a scanning electron microscope are shown in FIGS.
  • the raw materials using AA10 or RA-40 were mixed sufficiently with ⁇ -alumina in a ball mill, fired at 1,300 in a reducing atmosphere for 3 hours, and the obtained oxide was pulverized. Further, this powder was fired in a reducing atmosphere at 1,300 ° C. for 3 hours to obtain a phosphor.
  • composition formula of the obtained phosphor is as follows.
  • the average particle size, particle size distribution, emission peak, and emission intensity of each phosphor are shown in Table 3 below.
  • the emission intensity is a value calculated by assuming that the phosphor using RA-40 is 100%.
  • Figures 6a and 6b are scanning electron micrographs of the phosphor using AA10, which are substitutes for the drawing of the particle shape.
  • Figure 6a is 2,000 times
  • Figure 6b is 5,000 times.
  • Figures 7a and 7b are scanning electron micrographs of the phosphor using RA-40, which are substitutes for the drawing of the particle shape.
  • Figure 7a is 2,000 (H &)
  • Figure 7b is 5,000. It is twice.
  • Example 3 phosphor (Ce 0 6S T bo 35) ⁇ ,., ⁇ creating a Mg O ⁇ 5.5A 1 2 0 3 ⁇ -alumina 27 1.98 g
  • the raw materials using ⁇ 2, ⁇ 3, AA5 or RA-40 are mixed well with ⁇ -alumina in a ball mill, and calcined in a reducing atmosphere at 1,300 * t: for 2 hours.
  • the obtained oxide was pulverized. Further, after baking this powder at 1,300 in a reducing atmosphere for 2 hours, the pulverization time was adjusted to adjust the average particle size X50 of the phosphor powder to about 8.5 ⁇ .
  • the composition formula of the obtained phosphor is as follows.
  • the emission intensity is a value calculated by assuming that the phosphor using R R-40 is 1 000.
  • Table 4 below shows the properties of these phosphors.
  • the aluminate-based phosphor according to the present invention has a sharp particle size distribution that is easier to pulverize as compared with a phosphor using conventionally used high-purity alumina RA-40 as a raw material.
  • it is a very convenient aluminate-based phosphor that shows high emission intensity.
  • composition formula of the obtained phosphor is as follows.
  • Table 5 shows the characteristics of each phosphor such as average particle size, particle size distribution, and afterglow intensity. Note that the afterglow intensity is a value calculated by assuming that the phosphor using R-40 is 100%.
  • the aluminate-based phosphor for a phosphorescent material according to the present invention is easier and more pulverizable than a phosphor using a high-purity alumina RA-40 used as a raw material.
  • it has high afterglow intensity despite its small average particle size, and is an extremely excellent aluminate phosphor for phosphorescent materials.
  • according to the present invention it is possible to obtain an aluminate-based phosphor that is easily crushed and has a small amount of fine particles, has excellent light emission characteristics, and has a high product yield.
  • This aluminate-based phosphor is industrially extremely useful as a three-wavelength fluorescent lamp and an aluminate-based phosphor for a phosphorescent material.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

On décrit un procédé grâce auquel on peut préparer, en obtenant un rendement élevé, un luminophore à base d'aluminate, photosensible ou à trois longueurs d'onde, facile à pulvériser et présentant d'excellents caractéristiques de luminescence par suite de sa faible teneur en particules fines. Ce procédé consiste à utiliser dans la synthèse, en tant qu'alumine de départ, une poudre d'alumine α présentant un diamètre primaire de particule compris entre 0,3 et 30 νm et sensiblement dépourvue de toute surface de rupture.
PCT/JP1997/002739 1996-08-08 1997-08-07 Procede de preparation de luminophore a base d'aluminate WO1998006793A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8/224662 1996-08-08
JP8/224661 1996-08-08
JP22466196A JP3599913B2 (ja) 1996-08-08 1996-08-08 蓄光材用アルミン酸塩系蛍光体の製造方法
JP22466296A JP3599914B2 (ja) 1996-08-08 1996-08-08 アルミン酸塩系蛍光体の製造方法

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EP1073089A1 (fr) * 1999-07-26 2001-01-31 General Electric Company Matériau luminescent SrAl12O19 émettant dans le vert activé au manganese
EP1220332A2 (fr) * 2000-12-22 2002-07-03 Sanken Electric Co., Ltd. Couvercle fluorescent perméable à la lumière pour diode électroluminescente
EP1142976A3 (fr) * 2000-04-06 2003-07-23 Sumitomo Chemical Company, Limited Materiau fluorescent excitale par les ultraviolets à vide et emettant de la lumiere
EP1167489A3 (fr) * 2000-06-27 2003-09-17 Sumitomo Chemical Company, Limited Méthode de fabrication d'un matériau luminescent à base d'aluminate ,matériau luminescent ,et dispositif le contenant
WO2022168704A1 (fr) * 2021-02-05 2022-08-11 住友化学株式会社 Méthode de production de luminophore et luminophore
WO2022168705A1 (fr) * 2021-02-05 2022-08-11 住友化学株式会社 Luminophore et procédé de production de luminophore

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05194946A (ja) * 1992-01-23 1993-08-03 Toshiba Corp 蛍光体およびこの蛍光体を用いた蛍光ランプ
JPH05230454A (ja) * 1992-02-21 1993-09-07 Matsushita Electron Corp アルミン酸塩蛍光体およびこれを用いた蛍光ランプ
JPH06191835A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナの製造方法
JPH06191833A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナ
JPH06191836A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナ
JPH0860147A (ja) * 1994-08-17 1996-03-05 Mitsubishi Chem Corp アルミン酸塩蛍光体
JPH0873845A (ja) * 1994-06-29 1996-03-19 Nichia Chem Ind Ltd 残光性蛍光体
JPH0885787A (ja) * 1994-09-19 1996-04-02 Mitsubishi Chem Corp アルミン酸塩蛍光体
JPH08127772A (ja) * 1994-11-01 1996-05-21 Nemoto Tokushu Kagaku Kk 蓄光性蛍光体
JPH08170076A (ja) * 1994-06-10 1996-07-02 Nichia Chem Ind Ltd 長残光蛍光体

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05194946A (ja) * 1992-01-23 1993-08-03 Toshiba Corp 蛍光体およびこの蛍光体を用いた蛍光ランプ
JPH05230454A (ja) * 1992-02-21 1993-09-07 Matsushita Electron Corp アルミン酸塩蛍光体およびこれを用いた蛍光ランプ
JPH06191835A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナの製造方法
JPH06191833A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナ
JPH06191836A (ja) * 1992-06-02 1994-07-12 Sumitomo Chem Co Ltd α−アルミナ
JPH08170076A (ja) * 1994-06-10 1996-07-02 Nichia Chem Ind Ltd 長残光蛍光体
JPH0873845A (ja) * 1994-06-29 1996-03-19 Nichia Chem Ind Ltd 残光性蛍光体
JPH0860147A (ja) * 1994-08-17 1996-03-05 Mitsubishi Chem Corp アルミン酸塩蛍光体
JPH0885787A (ja) * 1994-09-19 1996-04-02 Mitsubishi Chem Corp アルミン酸塩蛍光体
JPH08127772A (ja) * 1994-11-01 1996-05-21 Nemoto Tokushu Kagaku Kk 蓄光性蛍光体

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1073089A1 (fr) * 1999-07-26 2001-01-31 General Electric Company Matériau luminescent SrAl12O19 émettant dans le vert activé au manganese
EP1142976A3 (fr) * 2000-04-06 2003-07-23 Sumitomo Chemical Company, Limited Materiau fluorescent excitale par les ultraviolets à vide et emettant de la lumiere
EP1167489A3 (fr) * 2000-06-27 2003-09-17 Sumitomo Chemical Company, Limited Méthode de fabrication d'un matériau luminescent à base d'aluminate ,matériau luminescent ,et dispositif le contenant
EP1220332A2 (fr) * 2000-12-22 2002-07-03 Sanken Electric Co., Ltd. Couvercle fluorescent perméable à la lumière pour diode électroluminescente
EP1220332A3 (fr) * 2000-12-22 2005-10-12 Sanken Electric Co., Ltd. Couvercle fluorescent perméable à la lumière pour diode électroluminescente
WO2022168704A1 (fr) * 2021-02-05 2022-08-11 住友化学株式会社 Méthode de production de luminophore et luminophore
WO2022168705A1 (fr) * 2021-02-05 2022-08-11 住友化学株式会社 Luminophore et procédé de production de luminophore

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