Gadolinium lutetium oxide fluorescent powder and preparation method thereof

A technology of gadolinium lutetium oxide and phosphor powder is applied in the field of functional materials and their preparation, which can solve the problems of expensive raw materials, increased environmental pollution, large cost, etc., and achieves the effects of high absorption and detection ability, good luminescence performance and cost reduction.

Inactive Publication Date: 2008-09-24
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precursor method increases the synthesis process and increases the cost, and the chemical methods usually used will increase environmental pollution
[0004] Lu 2 o 3 : Eu is another very potential red fluorescent material with excellent performance, but Lu 2 o 3 Raw materials are expensive, and the price has been high, so it hinders its market application

Method used

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  • Gadolinium lutetium oxide fluorescent powder and preparation method thereof
  • Gadolinium lutetium oxide fluorescent powder and preparation method thereof
  • Gadolinium lutetium oxide fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare gadolinium oxide lutetium phosphor, whose chemical composition can be expressed as Gd 1.3 Lu 0.6 Eu 0.1 o 3 , high-purity Lu is used in the synthesis of phosphor materials 2 o 3 、Gd 2 o 3 、Eu 2 o 3 The powder is the starting raw material, and the raw material is from Ganzhou, Jiangxi. It is an adsorption type rare earth ore with a purity of 99.99%. The proportioning is carried out according to this stoichiometric ratio. After accurate batching, put the mixed raw materials into the ball mill, and mix the materials for 24 hours. Using the method of solid-state sintering, put the mixed raw materials into an alumina crucible and calcinate in a muffle furnace with a normal atmosphere. The calcining temperature is 1300°C and the holding time is 10 hours. After the calcined raw material is cooled down, the Eu with cubic phase can be obtained 3+ Doped gadolinium oxide lutetium phosphor, natural cooling. The X-ray diffraction of the synthesized gadolinium oxid...

Embodiment 2

[0034] Prepare gadolinium oxide lutetium phosphor, whose chemical composition can be expressed as Gd 0.98 Lu 1.0 Eu 0.02 o 3 , high-purity Lu is used in the synthesis of phosphor materials 2 o 3 、Gd 2 o 3 、Eu 2 o 3 The powder is the starting raw material, and the raw material is from Ganzhou, Jiangxi. It is an adsorption type rare earth ore with a purity of 99.99%. The proportioning is carried out according to this stoichiometric ratio. After accurate batching, the mixed raw materials were loaded into a ball mill and mixed for 10 hours. Using the method of solid phase sintering, put the mixed raw materials into an alumina crucible and calcinate in a muffle furnace with a normal atmosphere. The calcining temperature is 1600°C and the holding time is 10 hours. After the calcined raw material is cooled down, the Eu with cubic phase can be obtained 3+ Doped gadolinium oxide lutetium phosphor, natural cooling. The X-ray diffraction of the synthesized gadolinium oxide lut...

Embodiment 3

[0036] Prepare gadolinium oxide lutetium phosphor, whose chemical composition can be expressed as Gd 1.1 Lu 0.6 Eu 0.3 o 3 , high-purity Lu is used in the synthesis of phosphor materials 2 o 3 、Gd 2 o 3 、Eu 2 o 3 The powder is the starting raw material, and the raw material is from Ganzhou, Jiangxi. It is an adsorption type rare earth ore with a purity of 99.99%. The proportioning is carried out according to this stoichiometric ratio. After accurate batching, the mixed raw materials are loaded into a ball mill and mixed for 20 hours. Using the method of solid-phase sintering, put the mixed raw materials into an alumina crucible and calcinate in a muffle furnace with a normal atmosphere. The calcining temperature is 1700°C and the holding time is 10 hours. After the calcined raw material is cooled down, the Eu with cubic phase can be obtained 3+ Doped gadolinium oxide lutetium phosphor, natural cooling. The X-ray diffraction of the synthesized gadolinium oxide luteti...

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Abstract

The invention discloses gadolinium oxide and lutecia phosphor powder and a preparation method thereof. The phosphor powder is solid solution of Eu<3+> mixed with Gd2O3 and Lu2O3, and is in cubic crystal structure. The solid phase sintering method is used for preparing the phosphor powder. High-purity powdered Lu2O3, Gd2O3 and Eu2O3 are accurately weighed, and are mixed uniformly, and calcined in a muffle in ordinary atmosphere; finally, the mixture is cooled, thus getting the cubic gadolinium oxide and lutecia phosphor powder mixed with Eu<3+>. The phosphor powder emits red light when being activated by ultraviolet light or X ray, and can be used as the phosphor powder of CRT, PDP, LED and FED, and an X-ray scintillating material.

Description

technical field [0001] The invention relates to a functional material and its preparation technology, in particular to a fluorescent powder luminescent material and its preparation method. Background technique [0002] Rare earth ion Eu 3+ doped cubic Gd 2 o 3 It is a very important luminescent and scintillation material. As early as 1964, Bril and Wanmaker studied its luminescent properties, and in recent years it has received widespread attention as a phosphor and thin film material. As a high-efficiency red phosphor, it has important application prospects in plasma imaging, high-definition television, projection television, flat panel display and other fields. As a scintillator, Gd 2 o 3 :Eu is a ceramic scintillator with excellent comprehensive performance, and it will have a very important application prospect in the fields of high-resolution X-CT, X-ray security inspection imaging equipment and CCD coupled large-area X-ray imaging. Gd 2 o 3 With high density (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 秦来顺舒康颖史宏声田光磊吴云涛柴文祥
Owner CHINA JILIANG UNIV
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