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Trivalent europium-doped barium fluochloride nano luminescent material and preparation method thereof

A nano-luminescent material and barium fluoride technology, applied in the field of nano-fluorescent luminescent materials, can solve the problems of high cost, need a protective atmosphere, low luminous intensity, etc., and achieve the effects of small size, low cost and strong luminescence

Active Publication Date: 2013-08-14
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires a protective atmosphere, and the cost is high. At the same time, the high temperature causes the existence of a large number of defects, resulting in low luminous intensity.

Method used

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  • Trivalent europium-doped barium fluochloride nano luminescent material and preparation method thereof
  • Trivalent europium-doped barium fluochloride nano luminescent material and preparation method thereof
  • Trivalent europium-doped barium fluochloride nano luminescent material and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0012] Example 1: Take by weighing 0.0005g europium chloride (EuCl 3 ·6H 2 O) and 0.6100g barium chloride (BaCl 2 2H 2 O) Pour into a 100ml beaker, add 2ml of water to dissolve it, then add 30ml of ethanol, at this time white turbidity occurs, stir to obtain a suspension. 0.0925g of ammonium fluoride was dissolved in 1ml of water, and then 15ml of ethanol was added to obtain a transparent solution. In the state of stirring, add the hydroalcoholic solution of barium fluoride dropwise into the hydroalcoholic solution of barium chloride and europium chloride. Stirring was continued for ten minutes, the suspension was transferred to an autoclave, and kept at 80°C for 2880 minutes. Cool naturally to room temperature, open the autoclave, remove the supernatant, wash with water and ethanol three times, and dry at 60°C for twelve hours to obtain Eu 3+ : BaFCl (0.05at%) fluoxalite nanocrystals, with a diameter of 100-200 nanometers and a thickness of 20-40 nanometers. Use a fluor...

example 2

[0013] Example 2: Take by weighing 0.0229g europium chloride (EuCl 3 ·6H 2 O) and 0.5947g barium chloride (BaCl 2 2H 2 O) Pour into a 100ml beaker, add 3ml of water to dissolve it, then add 30ml of ethanol, at this time white turbidity occurs, stir to obtain a suspension. 0.0925g of ammonium fluoride was dissolved in 1ml of water, and then 12ml of ethanol was added to obtain a transparent solution. In the state of stirring, add the hydroalcoholic solution of barium fluoride dropwise into the hydroalcoholic solution of barium chloride and europium chloride. Stirring was continued for ten minutes, the suspension was transferred to an autoclave, and kept at 100° C. for 2160 minutes. Cool naturally to room temperature, open the autoclave, remove the supernatant, wash with water and ethanol three times, and dry at 50°C for twelve hours to obtain Eu 3+ : BaFCl (2.5at%) fluoxalite nanocrystals, with a diameter of 100-200 nanometers and a thickness of 20-40 nanometers. Use a flu...

example 3

[0014] Example 3: Take by weighing 0.0942g europium chloride (EuCl 3 ·6H 2 O) and 0.5490g barium chloride (BaCl 2 2H 2 O) Pour it into a 100ml beaker, add 2ml of water to dissolve it, then add 35ml of ethanol, at this time white turbidity occurs, stir to obtain a suspension. 0.0925g of ammonium fluoride was dissolved in 1ml of water, and then 10ml of ethanol was added to obtain a transparent solution. In the state of stirring, add the hydroalcoholic solution of barium fluoride dropwise into the hydroalcoholic solution of barium fluoride chloride and europium chloride. Stirring was continued for ten minutes, the suspension was transferred to an autoclave, and kept at 120° C. for 1440 minutes. In the natural state, cool to room temperature, open the autoclave, remove the supernatant, wash with water and ethanol four times, and dry at 80°C for twelve hours to obtain Eu 3+ : BaFCl (10at%) fluoxalite nanocrystals, diameter 100-200 nanometers, thickness 20-40 nanometers. Use a...

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Abstract

The invention relates to the preparation of nano fluorescent material. The components of the prepared BaFCl nano-crystal are as follows: xEu3 plus minus (1 minus x) BaFCl (wherein x equal to 0.05 minus 25mol percent). When a fluorescence spectrometer is used to measure the illumination of Eu:BaFCl sample, the wide emission peak and the sharp emission peak of Eu3 plus at two different lattice points can be respectively obtained at 591.7nm, 612.6nm and 699.9nm and at 582.2nm, 617.2nm and 699.2nm by choosing the excitation wavelength at 392.5nm and 464.8nm.

Description

technical field [0001] The invention relates to a nanometer fluorescent luminescent material, in particular to a trivalent rare earth ion europium-doped barium fluoride chloride nanometer luminescent material and its preparation. Background technique [0002] Rare earth-doped inorganic nanocrystals are a new type of fluorescent material, which has broad application prospects in optoelectronic devices, liquid crystal displays, and solid-state lasers, and has attracted widespread attention from scholars at home and abroad. Among them, BaFCl is a dihalide of alkaline earth metal, flaky crystal, which has many excellent physical and chemical properties, and is a good luminescent substrate; at the same time, rare earth doped barium fluoride chloride is used in optical storage, biological characterization, X-ray intensified display, quantum cutting and other fields also have important application value. Due to the large difference in nucleophilic ability between fluoride ion and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/85
Inventor 陈学元鞠强李仁富刘永升罗文钦刘丽琴
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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