Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Europium ion-doped aluminum magnesium phosphate blue phosphor and preparation method thereof

A blue phosphor, aluminum magnesium phosphate technology, applied in the field of fluorescent materials, to achieve the effect of high-efficiency response characteristics, cost reduction, and wide emission band

Inactive Publication Date: 2011-12-21
KUNMING UNIV OF SCI & TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a solution for the problems that the existing near-ultraviolet LED lighting has a narrow fluorescent pink area, requires multiple phosphors to be compounded, and has a high cost and complicated preparation method. A kind of europium ion-doped aluminum magnesium phosphate blue phosphor and its preparation method, which has high-efficiency response characteristics and high-efficiency wide-spectrum illumination phosphor for near-ultraviolet light excitation, and is realized by the following technical scheme

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Europium ion-doped aluminum magnesium phosphate blue phosphor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) According to Mg ion: Eu ion: AlPO 4 The molar ratio is 0.999:0.001:1, take MgO, AlPO 4 、Eu 2 o 3 , to mix;

[0019] (2) Heat the mixture obtained in step (1) to 1400°C, keep it warm for 0.5 hours, and then cool it naturally;

[0020] (3) Place the mixture obtained in step (2) in an environment of CO reducing gas, and keep it warm for 0.5 hours at 1300 ° C. After natural cooling, the chemical composition formula is Mg 0.999 Eu 0.001 (AlPO 4 ) O Europium ion-doped magnesium aluminum phosphate phosphor.

Embodiment 2

[0022] (1) According to Mg ion: Eu ion: AlPO 4 The molar ratio is 0.98:0.02:0.9, take MgCO 3 , AlPO 4 、Eu 2 o 3 , to mix;

[0023] (2) Heat the mixture obtained in step (1) to 1300°C, keep it warm for 2 hours, and then cool it naturally;

[0024] (3) Place the mixture obtained in step (2) in H 2 +N 2 Under the environment of reducing gas, keep warm at 1200°C for 1 hour, and after natural cooling, the chemical composition formula is Mg 0.98 Eu 0.02 (AlPO 4 ) 0.9 O Europium ion-doped magnesium aluminum phosphate phosphor.

Embodiment 3

[0026] (1) According to Mg ion: Eu ion: AlPO 4 The molar ratio is 0.95:0.05:1.2, take Mg(HCO 3 )OH, AlPO 4 、Eu 2 o 3 , to mix;

[0027] (2) Place the mixture obtained in step (1) in an environment of CO reducing gas, raise the temperature to 1300°C, keep it warm for 2 hours, and after natural cooling, the chemical composition formula is Mg 0.95 Eu 0.05 (AlPO 4 ) 1.2 O Europium ion-doped magnesium aluminum phosphate phosphor.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a blue fluorescent powder of aluminum magnesium phosphate doped with europium ions and a preparation method thereof. The fluorescent powder includes a component whose chemical composition formula is Mg1-xEux(AlPO4)zO, wherein x=0.001~0.1; z= 0.9~1.2. The phosphor powder provided by the invention can be effectively excited by ultraviolet light and blue light, and emits broadband visible fluorescence from a wavelength range of 400nm to 700nm, with a central peak at about 440nm; the phosphor powder can be matched with near-ultraviolet tube-core light-emitting diodes, and is a Blue phosphors for white LEDs or energy-saving lamps.

Description

technical field [0001] The invention relates to lighting and display fluorescent powder technology, in particular to a blue fluorescent powder of aluminum magnesium phosphate doped with europium ions and a preparation method thereof, belonging to the technical field of fluorescent materials. Background technique [0002] Energy conservation and environmental protection are already the mainstream of future social development. Compared with incandescent lamps and energy-saving lamps that are widely used at present, LED (Light Emitting Diode)-based solid-state lighting has many advantages such as energy saving, stability, and environmental protection. Therefore, the development of semiconductor lighting is conducive to ending the energy crisis and the environmental problems existing in the original incandescent lamps and energy-saving lamps. In order to realize white light LED, a better method is to use light conversion phosphor. At present, the common white LEDs mainly use ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
CPCY02B20/181Y02B20/00
Inventor 宋志国邱建备杨正文周大成尹兆益徐圆圆
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com