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Preparation method of Dy-doped strontium fluoborate luminescent material

A technology of luminescent materials and fluoroboric acid, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of unstable physical and chemical properties, unenvironmental protection of the preparation process, and low luminous efficiency, and achieve simple operation, enhanced luminous performance, and high luminous efficiency. high effect

Inactive Publication Date: 2019-12-13
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to overcome the defects of the prior art such as unstable physical and chemical properties, non-environmental protection of the preparation process, and low luminous efficiency, and provide a method for preparing Dy-doped strontium fluoroborate luminescent material

Method used

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  • Preparation method of Dy-doped strontium fluoborate luminescent material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) According to the chemical formula Sr 4.99 Dy 0.01 (BO 3 ) 3 F: the stoichiometric ratio of each element in , and the phosphor powder with a total amount of 1 mmol is prepared. Weigh strontium carbonate SrCO 3 4.99 mmol, boric acid H 3 BO 3 1 mmol, strontium fluoride SrF 2 1mmol, doped dysprosium oxide Dy 2 o 3 1%.

[0023] (2) The weighed strontium carbonate SrCO 3 , boric acid H 3 BO 3 , strontium fluoride SrF 2 , dysprosium oxide Dy 2 o 3 Grinding in an agate mortar for about 20 minutes, first move the mixed powder into a crucible, and then put it into a high-temperature calcination furnace for pre-sintering experiments. The pre-sintering temperature is 400°C and the pre-sintering time is 6 hours.

[0024] (3) After cooling to room temperature, take out the obtained material and put it into an agate mortar for grinding for about 10 minutes, mix well and then sinter at 950° C. for 8 hours.

[0025] (4) Sr can be obtained by natural cooling to roo...

Embodiment 2

[0027] (1) According to the chemical formula Sr 4.93 Dy 0.01 (BO 3 ) 3 F: the stoichiometric ratio of each element in , and the phosphor powder with a total amount of 1 mmol is prepared. Weigh strontium carbonate SrCO 3 4.93mmol, boronic acid H 3 BO 3 1 mmol, strontium fluoride SrF 2 1mmol, doped dysprosium oxide Dy 2 o 3 3%.

[0028] (2) The weighed strontium carbonate SrCO 3 , boric acid H 3 BO 3 , strontium fluoride SrF 2 , dysprosium oxide Dy 2 o 3 Grind in an agate mortar for about 30 minutes, then move the mixed powder into a crucible, and then put it into a high-temperature calciner for pre-sintering experiments. The pre-sintering temperature is 550°C and the pre-sintering time is 8 hours.

[0029] (3) After cooling to room temperature, take out the obtained material and put it into an agate mortar for grinding for about 10 minutes, mix well and then sinter at 1000° C. for 8 hours.

[0030] (4) Sr can be obtained by natural cooling to room temperature...

Embodiment 3

[0032] (1) According to the chemical formula Sr 4.96 Dy 0.01 (BO 3 ) 3 F: the stoichiometric ratio of each element in , and the phosphor powder with a total amount of 1 mmol is prepared. Weigh strontium carbonate SrCO 3 4.96mmol, boric acid H 3 BO 3 1 mmol, strontium fluoride SrF 2 1mmol, doped dysprosium oxide Dy 2 o 3 7%.

[0033] (2) The weighed strontium carbonate SrCO 3 , boric acid H 3 BO 3 , strontium fluoride SrF 2 , dysprosium oxide Dy 2 o 3 Grind in an agate mortar for about 25 minutes, then move the mixed powder into a crucible, and then put it into a high-temperature calciner for pre-sintering experiments. The pre-sintering temperature is 550°C and the pre-sintering time is 8 hours.

[0034] (3) After cooling to room temperature, take out the obtained material and put it into an agate mortar for grinding for about 10 minutes, mix well and then sinter at 1000° C. for 8 hours.

[0035] (4) Sr can be obtained by natural cooling to room temperature 5 ...

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Abstract

The invention discloses a preparation method of a Dy-doped strontium fluoborate luminescent material. The preparation method comprises the following operation steps: weighing quantitative raw materials, proportioning, grinding, sintering, spontaneous combustion cooling and the like. The purpose of the preparation method is to prepare a novel environment-friendly high-efficiency luminescent material through doping Dy3 + ions in a luminescent matrix; after doping of the trivalent dysprosium ions, the luminescent material can generate blue light, and is high in luminescence efficiency, luminescence property is enhanced, physicochemical properties are stable, preparation cost is low, and operation is simple.

Description

technical field [0001] The invention relates to the technical field of fluorescent material preparation, in particular to a method for preparing a Dy-doped strontium fluoroborate luminescent material. Background technique [0002] Phosphor powder, as a component of white light, has played a huge role in promoting the development of human society. According to the research status of fluorescent powder, the current commercial method for white light mainly uses the combination of blue light and yellow fluorescent powder, although the combination of white light produced by this method has the highest efficiency and the lowest price. However, the low color rendering and color rendering index due to the lack of red light components largely limit the practical application of this method. It is mainly by adding red phosphor and ion doping to improve the existing commercial yellow phosphor, although this has achieved results in color temperature, quantum efficiency, etc. to a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/63
CPCC09K11/7712
Inventor 徐祖顺莫智敏赵侃乔晨旭
Owner HUBEI UNIV