CN102703077B - A kind of fluorescent material and preparation method and application - Google Patents

A kind of fluorescent material and preparation method and application Download PDF

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Publication number
CN102703077B
CN102703077B CN201210191305.6A CN201210191305A CN102703077B CN 102703077 B CN102703077 B CN 102703077B CN 201210191305 A CN201210191305 A CN 201210191305A CN 102703077 B CN102703077 B CN 102703077B
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China
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fluorescent material
material
combinations
zr
ce
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CN201210191305.6A
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Chinese (zh)
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CN102703077A (en
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龚兴红
黄建华
陈雨金
林炎富
黄艺东
罗遵度
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中国科学院福建物质结构研究所
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/16Gas discharge lamps, e.g. fluorescent lamps, high intensity discharge lamps [HID] or molecular radiators
    • Y02B20/18Low pressure and fluorescent lamps
    • Y02B20/181Fluorescent powders

Abstract

The present invention provides a kind of fluorescent material and its preparation method and application.This fluorescent material chemical formula is M2CexR1‑xZr2(TO4)3, the one during wherein M is alkaline-earth metal Mg, Ca, Sr, Ba or combinations thereof, R is the one in Rare Earth Y, Sc, Lu, Gd, La or combinations thereof, and T is the one in Al or Ga or combinations thereof, and the span of x is 0 < x≤0.3.Such fluorescent material stable chemical nature, excitation wavelength range is 360~500nm, and launching wave-length coverage is 430~650nm.

Description

A kind of fluorescent material and preparation method and application

Technical field

The present invention relates to class phosphor for white light LED and preparation method thereof.

Background technology

Semiconductor lighting (white light LEDs) have environmental protection, energy-efficient, volume is little, lightweight, The advantages such as response is fast, running voltage is low and safety is good, are therefore described as continue electric filament lamp, daylight Forth generation lighting electric light source after lamp and electricity-saving lamp, or referred to as 21 century green light source.

Realize White-light LED illumination and mainly have two kinds of approach: the first is by three kinds of LED groups of red, green, blue Close and produce white light;The second is to be mixed to form white light with other luminescent material of LED deexcitation.From mesh From the point of view of front development trend, in the aspects such as feasibility, practicality and commercialization, second method Better than first method;Therefore, synthesis can effectively be excited by LED, have good luminous characteristic Fluorescent material the most crucial.

Summary of the invention

It is an object of the invention to provide class phosphor for white light LED and preparation method thereof.On realizing Stating purpose, the present invention adopts the technical scheme that:

1, the phosphor for white light LED of the present invention, has below formula: M2CexR1-xZr2(TO4)3 , the one during wherein M is alkaline-earth metal Mg, Ca, Sr, Ba or combinations thereof, R is rare earth One in Y, Sc, Lu, Gd, La or combinations thereof, T be the one in Al or Ga or it Combination, the span of x is 0 < x≤0.3.

2, the preparation method of class fluorescent material as described in item 1, i.e. uses the solid phase under reducing atmosphere to burn Connection prepares described fluorescent material, it is characterized by:

(1), with Ce, Ca, Mg, Sr, Ba, Y, Sc, Lu, Gd, La, Zr, Al, The oxide of Ga or corresponding salt are raw material, and weigh by the chemical formula of above-mentioned material and meet M2CexR1-xZr2(TO4)3The raw material of metering ratio.

(2), the raw mixture weighed in (1) is fully ground mix homogeneously.

(3), the raw mixture prepared in (2) is loaded standby fluorescence of i.e. not drawing up with raw material components In the crucible that the exotic materials such as the metal of powder chemically reactive, alloy or oxide manufacture, put In temperature 1600~1800 oThe high temperature sintering furnace of C sinters 3~4 hours, in sintering process, protects Hold reducing atmosphere, i.e. obtain required fluorescent material.

3, class fluorescent material as described in item 1, is characterized by: excitation wavelength range is 360~500nm , fluorescence emission wavelengths scope is 430~650nm.

Detailed description of the invention

Embodiment 1

Weigh the CaCO of 2.002g3, the Gd of 1.7219g2O3, the ZrO of 2.4644g2, the A of 1.5285g l2O3, the CeO of 0.0861g2, these 5 kinds of raw materials are placed in ground and mixed in agate mortar together equal Even, it is placed in Muffle furnace, with 1750 under Carbon monoxide reduction atmosphereoBurn at a temperature of about C Tie 4 hours, i.e. obtain Ca2Ce0.05Gd0.95Zr2(AlO4)3Fluorescent material.The excitation wavelength of this fluorescent material Scope is 360~480nm, and excitation peak is positioned at 420nm, and launching wave-length coverage is 430~650nm, Emission peak is positioned at 509nm.

Embodiment 2

Weigh the CaCO of 2.002g3, the Y of 1.0726g2O3, the ZrO of 2.4644g2, the Al of 1.5285g2O3, the CeO of 0.0861g2, these 5 kinds of raw materials are placed in ground and mixed in agate mortar together uniform , it is placed in Muffle furnace, and under Carbon monoxide reduction atmosphere, 1700oAt a temperature of about C Sinter 4 hours, i.e. obtain Ca2Ce0.05Y0.95Zr2(AlO4)3Fluorescent material.The excitation wavelength range of this fluorescent material is 360~480nm , excitation peak is positioned at 418nm, and launching wave-length coverage is 430~650nm, and emission peak is positioned at 505nm 。

Embodiment 3

Weigh the CaCO of 2.002g3, the Sc of 0.6551g2O3, the ZrO of 2.4644g2, the A of 1.5285g l2O3, the CeO of 0.0861g2, these 5 kinds of raw materials are placed in ground and mixed in agate mortar together equal Even, it is placed in Muffle furnace, and under Carbon monoxide reduction atmosphere, 1650oThe temperature of about C Lower sintering 4 hours, i.e. obtains Ca2Ce0.05Sc0.95Zr2(AlO4)3Fluorescent material.Exciting of this fluorescent material Wave-length coverage is 360~480nm, and excitation peak is positioned at 416nm, and launching wave-length coverage is 430~65 0nm, emission peak is positioned at 498nm.

Embodiment 4

Weigh the CaCO of 1.001g3, the SrCO of 1.4762g3, the Gd of 1.7219g2O3, 2.4644g ZrO2, the Al of 1.5285g2O3, the CeO of 0.0861g2, these 6 kinds of raw materials are placed in Achates together In mortar, ground and mixed is uniform, is placed in Muffle furnace, and under Carbon monoxide reduction atmosphere, 1750oSinter 4 hours at a temperature of about C, i.e. obtain CaSrCe0.05Gd0.95Zr2(AlO4)3Fluorescent material .The excitation wavelength range of this fluorescent material is 360~480nm, and excitation peak is positioned at 416nm, transmitted wave Long scope is 430~650nm, and emission peak is positioned at 530nm.

Embodiment 5

Weigh the CaCO of 2.002g3, the Gd of 0.8156g2O3, the La of 0.8145g2O3, 2.4644g ZrO2, the Al of 1.5285g2O3, the CeO of 0.0861g2, these 6 kinds of raw materials are placed in Achates together In mortar, ground and mixed is uniform, is placed in Muffle furnace, with 1750 under Carbon monoxide reduction atmosphereoSinter 4 hours at a temperature of about C, i.e. obtain Ca2Ce0.05Gd0.45La0.5Zr2(AlO4)3Fluorescent material. The excitation wavelength range of this fluorescent material is 360~480nm, and excitation peak is positioned at 439nm, launches wavelength Scope is 430~650nm, and emission peak is positioned at 530nm.

Embodiment 6

Weigh the CaCO of 2.002g3, the Gd of 1.7219g2O3, the ZrO of 2.4644g2, the G of 2.8117g a2O3, the CeO of 0.0861g2, these 5 kinds of raw materials are placed in ground and mixed in agate mortar together equal Even, it is placed in Muffle furnace, with 1650 under Carbon monoxide reduction atmosphereoBurn at a temperature of about C Tie 4 hours, i.e. obtain Ca2Ce0.05Gd0.95Zr2(GaO4)3Fluorescent material.The excitation wavelength of this fluorescent material Scope is 360~480nm, and excitation peak is positioned at 433nm, and launching wave-length coverage is 430~650nm, Emission peak is positioned at 507nm.

Claims (5)

1. a fluorescent material, it is characterised in that: the chemical formula of this fluorescent material is M2CexR1-xZr2(TO4)3, wherein M For the one in alkaline-earth metal Mg, Ca, Sr, Ba or combinations thereof, R be Rare Earth Y, Sc, Lu, One in Gd, La or combinations thereof, T is the one in Al or Ga or combinations thereof, and x takes Value scope is 0 < x≤0.3.
2. fluorescent material as claimed in claim 1, it is characterised in that: the excitation wavelength range of described fluorescent material exists Between 360~500nm.
3. fluorescent material as claimed in claim 1, it is characterised in that: the transmitting wavelength of described fluorescent material 430~ Between 650nm.
4. a preparation method for the fluorescent material described in right 1, uses the solid sintering technology under reducing atmosphere to prepare institute State fluorescent material, it is characterised in that:
(1) with the oxide of Ce, Ca, Mg, Sr, Ba, Y, Sc, Lu, Gd, La, Zr, Al, Ga or Corresponding salt is raw material, and weighs by the chemical formula of above-mentioned material and meet M2CexR1-xZr2(TO4)3Meter The raw material of amount ratio;
(2) raw mixture weighed in (1) is fully ground mix homogeneously;
(3) raw mixture prepared in (2) is loaded not with the metal of raw material components chemically reactive, alloy or In the crucible that oxide exotic material manufactures, it is placed in temperature 1600~the high temperature sintering furnace of 1800 DEG C Middle sintering 3~4 hours, in sintering process, keep reducing atmosphere, i.e. obtain required fluorescent material.
5. the fluorescent material described in claim 1 is used for preparing white light LEDs.
CN201210191305.6A 2012-06-11 2012-06-11 A kind of fluorescent material and preparation method and application CN102703077B (en)

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US9976080B2 (en) 2013-03-08 2018-05-22 Panasonic Intellectual Property Management Co., Ltd. Rare earth aluminum garnet-type inorganic oxide, phosphor and light-emitting device using same
CN104152147B (en) * 2014-08-15 2016-11-02 王海容 A kind of rare earth oxysalt fluorophor and application thereof
CN105567236B (en) * 2014-10-15 2018-07-20 有研稀土新材料股份有限公司 Carbuncle type fluorescent powder and preparation method and device comprising the fluorescent powder
CN107326259A (en) * 2017-05-26 2017-11-07 江苏金基特钢有限公司 A kind of alloy material with noctilucent function
CN107267856A (en) * 2017-05-26 2017-10-20 江苏金基特钢有限公司 A kind of preparation method of Ethidum Eremide fluorescence alloy material

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