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A kind of yttrium-cerium composite oxide-based up-conversion luminescent material and preparation method thereof

A composite oxide, luminescent material technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of low luminous efficiency, luminous intensity can not meet practical application requirements, etc., achieve high luminous intensity, small powder particles, Single phase effect

Active Publication Date: 2021-04-30
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of low luminous efficiency and luminous intensity of oxide-based up-conversion luminescent materials in the field of up-conversion luminescent materials, and to find oxide-based up-conversion luminescent materials with higher luminous efficiency and intensity, the present invention provides A high-luminous-intensity yttrium-cerium composite oxide-based up-conversion luminescent material belonging to the field of luminescent materials and a preparation method thereof

Method used

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  • A kind of yttrium-cerium composite oxide-based up-conversion luminescent material and preparation method thereof
  • A kind of yttrium-cerium composite oxide-based up-conversion luminescent material and preparation method thereof
  • A kind of yttrium-cerium composite oxide-based up-conversion luminescent material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0018] Preparation of Er by sol-gel method 3+ , Yb 3+ Double-doped yttrium-cerium composite oxide-based up-conversion luminescent material Y 1.97 Er 0.01 Yb 0.02 CeO 5 , the specific operation is as follows:

[0019] The ratio of various raw materials is calculated according to the mole fraction of each metal element in the material composition. Weigh 3.2713g Ce(NO 3 ) 3 ·6H 2 O, 5.6865g Y (NO 3 ) 3 ·6H 2 O, 0.0334g Er(NO 3 ) 3 ·5H 2 O, 0.0698g Yb(NO 3 )·6H 2 O put into a beaker, add 70mL of distilled water, stir to make it fully dissolved to form a uniform mixed solution, add 8.692g of citric acid into the mixed solution and stir evenly, slowly add 2mol / L of citric acid into the mixed solution at a certain speed under stirring conditions Ammonia water until the pH value of the solution is 4-5 to make a transparent sol. Put the beaker containing the sol in a constant temperature water bath for gelation reaction. The gelation temperature is 60°C and the time is ...

Embodiment 2

[0022] Preparation of Er by sol-gel method 3+ , Yb 3+ Double-doped yttrium-cerium composite oxide-based up-conversion luminescent material Y 1.81 Er 0.01 Yb 0.18CeO 5 ,details as follows:

[0023] Weigh 3.2713g Ce(NO 3 ) 3 ·6H 2 O, 5.2246g Y (NO 3 ) 3 ·6H 2 O, 0.0334gEr(NO 3 ) 3 ·5H 2 O, 0.6282g Yb(NO 3 )·6H 2 O is put into beaker, all the other steps are with embodiment 1.

[0024] image 3 for Er 3+ , Yb 3+ Double-doped yttrium-cerium composite oxide-based up-conversion luminescent material Y 1.81 Er 0.01 Yb 0.18 CeO 5 The up-converted fluorescence spectrum of . At room temperature, the powdery sample emits bright red light when irradiated by a 30mw 980nm semiconductor laser.

Embodiment 3

[0026] Preparation of Ho by sol-gel method 3+ , Yb 3+ Double-doped yttrium-cerium composite oxide-based up-conversion luminescent material Y 1.945 Ho 0.005 Yb 0.05 CeO 5 , the specific operation is as follows:

[0027] The ratio of various raw materials is calculated according to the mole fraction of each metal element in the material composition. Weigh 3.4382g Ce(NO 3 ) 3 ·6H 2 O, 6.0661g Y (NO 3 ) 3 ·6H 2 O, 0.0175g Ho(NO 3 ) 3 ·5H 2 O, 0.1479g Yb(NO 3 ) 3 ·6H 2 O put into a beaker, add 70mL of distilled water, stir to fully dissolve to form a uniform mixed solution, add 8.692g of citric acid to the mixed solution and stir evenly, slowly add 2mol / L to the mixed solution at a certain speed under stirring conditions ammonia water until the pH value of the solution is 4 to 5 to make a transparent sol, put the beaker containing the sol in a constant temperature water bath for gelation reaction, the gelation temperature is 60°C, and the time is 5 to 8h. After th...

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Abstract

In order to solve the problems that the oxide-based up-conversion luminescent materials in the field of up-conversion luminescent materials have low luminous efficiency and the luminous intensity cannot meet the requirements of practical applications, the present invention provides an yttrium-cerium composite oxide-based up-conversion luminescent material and a preparation method thereof . The chemical formula of the luminescent material is Y (2‑x‑y) RE x Yb y CeO 5 , in which: 0.0002≤x≤0.035, 0.01≤y≤0.25; the preparation method is as follows: the precursor is prepared by sol-gel method, after drying and grinding, it is calcined at 900-1300℃ for 1-4 hours to obtain a series of doped Rare earth yttrium cerium composite oxide-based up-conversion luminescent material. The luminescent material has the advantages of simple preparation process, small powder particles, single phase, good chemical stability, and high luminous intensity under 980nm infrared light excitation, which can meet the requirements of anti-counterfeiting technology and other practical application fields, and has broad application prospects.

Description

technical field [0001] The invention relates to a high-luminous-intensity yttrium-cerium composite oxide-based up-conversion luminescent material excited by 980nm infrared light and a preparation method thereof, belonging to the field of luminescent materials. Background technique [0002] Up-conversion luminescent material is an important luminescent material, which can convert long-wavelength excitation light into short-wavelength emission light through a multi-photon mechanism. Since the up-conversion phenomenon was discovered in the 1960s, up-conversion has been widely studied. Up-conversion luminescent materials doped with rare earth ions are used in up-conversion lasers, optical fiber amplifiers, three-dimensional displays, anti-counterfeiting identification, infrared imaging, and biological detection. and other fields have broad application prospects. [0003] Up-conversion luminescent materials can be roughly classified into up-conversion luminescent materials such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
CPCC09K11/7769
Inventor 周永强王乐慧刘海涛
Owner WENZHOU UNIVERSITY
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