Process for preparing europium oxide doped inorganic lighting material

A technology of luminescent materials and europium oxide, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of harsh reaction conditions and cumbersome operation process, and achieve the effects of easy control of conditions, high reaction efficiency and convenient operation

Inactive Publication Date: 2006-03-29
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the operation process of the existing method for preparing luminescent materials is relatively cumbersome and the

Method used

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  • Process for preparing europium oxide doped inorganic lighting material
  • Process for preparing europium oxide doped inorganic lighting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 1.00 g of thorium nitrate tetrahydrate and 0.02 g of europium oxide in a beaker. Add 10ml of distilled water, add dropwise 0.03g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 500°C for 2h in a muffle furnace to obtain the final target product.

[0018] The final product was tested in a F4500 fluorescence instrument, and 250nm was selected as the excitation wavelength to measure the fluorescence emission spectrum, see figure 1 .

Embodiment 2

[0020] Weigh 1.00 g of thorium nitrate tetrahydrate and 0.08 g of europium oxide in a beaker. Add 20ml of distilled water, add dropwise 0.12g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 450°C for 3h in a muffle furnace.

Embodiment 3

[0022] Weigh 1.00 g of thorium nitrate tetrahydrate and 0.05 g of europium oxide in a porcelain crucible. Add 30ml of distilled water, add dropwise 0.08g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 550°C for 3h in a muffle furnace.

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Abstract

An inorganic luminous material featuring that europium oxide is doped into ThO2 is prepared through proportionally mixing tetrahydrated thorium nitrate with europium oxide, calcining at 400-1000 deg.C for 1-2 hr and cooling.

Description

technical field [0001] The invention relates to a preparation method of a rare earth luminescent material, in particular to a preparation method of a luminescent material doped with europium oxide in thorium dioxide. Background technique [0002] Luminescence is the process by which energy is somehow absorbed inside an object and converted into light radiation. At present, the luminescent materials used include two categories: organic and inorganic, mainly inorganic compounds, and mainly solid materials. From the perspective of morphology, most of them are powder polycrystalline, followed by single crystal and thin film. Among the solid materials, most of them are insulators or semiconductors with large band gaps. The luminescent properties of inorganic materials are related to the structural defects and impurity defects of the compounds. The luminescence caused by the former is called non-activated luminescence (self-activated luminescence); the latter is called activated...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 林志为谢兆雄黄荣彬郑兰荪
Owner XIAMEN UNIV
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