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Light rare earth ion stabilized nitrogen oxide ceramic fluorescent powder and its combustion synthesis method and uses

A technology of nitrogen oxides and light rare earths, applied in the field of phosphors

Inactive Publication Date: 2006-12-13
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using low-cost combustion synthesis technology to synthesize rare earth nitrogen oxide ceramic phosphors and applying them to semiconductor lighting combined with fluorescent conversion technology has not been reported at home and abroad so far.

Method used

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  • Light rare earth ion stabilized nitrogen oxide ceramic fluorescent powder and its combustion synthesis method and uses
  • Light rare earth ion stabilized nitrogen oxide ceramic fluorescent powder and its combustion synthesis method and uses
  • Light rare earth ion stabilized nitrogen oxide ceramic fluorescent powder and its combustion synthesis method and uses

Examples

Experimental program
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Effect test

Embodiment 1

[0027] refer to figure 1 The Me(Y)-Si-Al-O-N phase diagram, the chemical general formula of the designed light rare earth ion stabilized nitrogen oxide phosphor is: (Me 1-3 / 2x Re x ) m / 2 Si 9 Al m+n on N 16-n . Get Me=Ca, Re=Eu, get m=2n=2.0, x=0.10, the general chemical formula can be expressed as (Ca 0.85 Eu 0.10 ) Si 9 Al 3 ON 15 . Set Si and Si in the raw material 3 N 4 The molar ratio is 5:1 (equivalent to a weight ratio of 1:1), the molar ratio of Al to AlN is 41:27 (equivalent to a weight ratio of 1:1), and the following raw materials are weighed according to the molar ratio in the general chemical formula: Si powder (particle size is 1500 mesh), Al powder (particle size is 325 mesh), Si 3 N 4 Powder (particle size is 3 Powder (particle size is 2 o 3 Powder (particle size is 3 , and put them together in the reactor. Vacuum first, then fill with high-purity nitrogen, and induce Si, Al and N in 0.6MPa nitrogen by local ignition 2 The gas-solid self-propa...

Embodiment 2

[0029] refer to figure 1 The Me(Y)-Si-Al-O-N phase diagram, the chemical general formula of the designed light rare earth ion stabilized nitrogen oxide phosphor is: (Me 1-p , Y p ) Si 12-(m+n ) Al m+n o n N 16-n : Re x . Get Me=Ca, Re=Eu, get m=2n=3.0, x=0.10, p=0.70, the general chemical formula can be expressed as (Ca 0.30 Y 0.70 ) Si 7.50 Al 4.50 o 1.50 N 14.50 :Eu 0.10 . Set Si and Si in the raw material 3 N 4 The molar ratio is 5:1 (equivalent to a weight ratio of 1:1), the molar ratio of Al to AlN is 41:27 (equivalent to a weight ratio of 1:1), and the following raw materials are weighed according to the molar ratio in the general chemical formula: Si powder (particle size is 1500 mesh), Al powder (particle size is 325 mesh), Si 3 N 4 Powder (particle size is 3 Powder (particle size is 2 o 3 Powder (particle size is 2 o 3 Powder (particle diameter is50 <2.5μm). The detected fluorescence peak was at 565 nm. The fluorescent powder can be used as a spe...

Embodiment 3

[0031] refer to figure 1 The Me(Y)-Si-Al-O-N phase diagram, the chemical general formula of the designed light rare earth ion stabilized nitrogen oxide phosphor is: (Me 1-3 / 2x Re x ) m / 2 Si 12-(m+n) Al m+n o n N 16-n . Get Me=Ca, Re=Ce, get m=2n=2.0, x=0.10, the general chemical formula can be expressed as (Ca 0.85 Ce 0.10 ) Si 9 Al 3 ON 15 . Set Si and Si in the raw material 3 N 4 The molar ratio is 5:1 (equivalent to a weight ratio of 1:1), the molar ratio of Al to AlN is 41:27 (equivalent to a weight ratio of 1:1), and the following raw materials are weighed according to the molar ratio in the general chemical formula: Si powder (325 mesh particle size), Al powder (1500 mesh particle size), Si 3 N 4 Powder (particle size is 3 Powder (particle size is 2 Powder (particle size is Image 6 shown. The fluorescent powder can be used as a special fluorescent powder for fluorescent conversion type white light diode lighting.

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Abstract

The invention relates the nitrogen oxide ceramic luminescent powder and method for synthesizing. The chemical formula is: (Me1-3 / 2xRex)m / 2Si12-(m+n)Alm+nOnN16-n or (Me1-p, Yp)Si12-(m+n)Alm+nOnN16-n: Rex. Me is Ca or Mg or the mixture of Ca and Mg; the Re is Eu or Ce or the mixture of Eu and Ce, and m=2n, 0.5 C09K 11 / 80 H01L 51 / 54 3 5 2 2006 / 7 / 11 1876755 2006 / 12 / 13 000000000 Technical Institute of Physics and Chemistry of CAS Beijing 100080 Li Jiangtao Cui Meng Yang Jun Lin Zhiming li bai 31002 Shanghai Patent Agency of the Chinese Academy of Sciences No.319 Yueyang Road, Shanghai 200031

Description

technical field [0001] The invention relates to light rare earth ion-stabilized nitrogen oxide ceramic fluorescent powder and its combustion synthesis method and application, especially a kind of combustion synthesis obtained by being excited by blue light or near-ultraviolet light emitted by a semiconductor light-emitting diode (LED) and emitting green light. Light or yellow phosphor. This novel nitrogen oxide ceramic phosphor can be used in the field of semiconductor lighting. Background technique [0002] Through fluorescent conversion technology, the emission light of GaN blue LED or GaInN near-ultraviolet LED is combined with the emission light of phosphor powder excited by it to generate white light, which is the mainstream technology in solid-state lighting technology. But so far, most of the phosphors studied and used at home and abroad are oxide or sulfide material systems. Rare earth oxynitride ceramic materials have been widely studied as high-temperature struct...

Claims

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Application Information

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IPC IPC(8): C09K11/80H01L51/54
Inventor 李江涛崔猛杨筠林志明
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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