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White long-lasting luminescent material and synthetic method thereof

A technology of long afterglow luminescence and synthesis method, which is applied to luminescent materials, chemical instruments and methods, etc., can solve the problems of prolonging afterglow time and not realizing white emission, etc., and achieves the effects of low production cost, easy realization, and short constant temperature time.

Inactive Publication Date: 2013-04-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2002, Zhao Chunlei et al. (Chinese Journal of Rare Earth, 20 (2002): 593-596) in Y2O2S:Eu3+ In sup>, Mg2+, Ti4+, Tb3+ is introduced to prolong the afterglow time of the red long afterglow emission of this material , but because the concentration of Eu3+ in this literature is much higher than that of Tb3+, the introduction of Tb3+ only prolongs the afterglow time, White emission not achieved

Method used

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  • White long-lasting luminescent material and synthetic method thereof
  • White long-lasting luminescent material and synthetic method thereof
  • White long-lasting luminescent material and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] Put the raw materials of yttrium oxide, europium oxide, terbium oxide, anhydrous sodium carbonate, basic magnesium carbonate, and silicon dioxide into an electric blast drying oven, dry at 60°C for 6 hours, and then change the stoichiometric ratio to Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.06Mg 2+ , 0.06Si 4+ Take by weighing 4.5213g yttrium oxide, 0.0053g europium oxide, 0.0112g terbium oxide, 1.4231g anhydrous sodium carbonate, 0.5380g potassium phosphate, 0.0734g silicon dioxide, 0.1221g basic magnesium carbonate, 1.2760g sublimated sulfur, and Put it into a glass mortar and grind for 3h, and mix well. Put the uniformly mixed raw materials into an alumina crucible, keep the temperature at 1000°C for 30 minutes in a reducing atmosphere, and then naturally cool to room temperature with the furnace to obtain Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.06Mg 2+ , 0.06Si 4+ White long afterglow luminescent material. The sample test is as follows: 1. Determine th...

Embodiment approach 2

[0034] Put the raw materials of yttrium oxide, europium oxide, terbium oxide, anhydrous sodium carbonate, basic magnesium carbonate, and silicon dioxide into an electric blast drying oven, dry at 60°C for 6 hours, and then change the stoichiometric ratio to Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.04Mg 2+ , 0.04Si 4+ Take by weighing 4.5213g yttrium oxide, 0.0053g europium oxide, 0.0112g terbium oxide, 1.4231g anhydrous sodium carbonate, 0.5380g potassium phosphate, 0.0489g silicon dioxide, 0.0914g basic magnesium carbonate, 1.2760g sublimated sulfur, and It was put into a glass mortar, manually ground for 3 hours, and mixed evenly. Put the uniformly mixed raw materials into an alumina crucible, keep the temperature at 1000°C for 30 minutes in a reducing atmosphere, and then naturally cool to room temperature with the furnace to obtain Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.04Mg 2+ , 0.04Si 4+ White long afterglow luminescent material. The sample test is as follows...

Embodiment approach 3

[0036] Put the raw materials of yttrium oxide, europium oxide, terbium oxide, anhydrous sodium carbonate, basic magnesium carbonate, and silicon dioxide into an electric blast drying oven, dry at 60°C for 6 hours, and then change the stoichiometric ratio to Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.1Mg 2+ , 0.1Si 4+ Take by weighing 4.5213g yttrium oxide, 0.0053g europium oxide, 0.0112g terbium oxide, 1.4231g anhydrous sodium carbonate, 0.5380g potassium phosphate, 0.1223g silicon dioxide, 0.2036g basic magnesium carbonate, 1.2760g sublimated sulfur, and It was put into a glass mortar, manually ground for 3 hours, and mixed evenly. Put the uniformly mixed raw materials into an alumina crucible, keep the temperature at 1000°C for 30 minutes in a reducing atmosphere, and then naturally cool to room temperature with the furnace to obtain Y 2 o 2 S: 0.003Tb 3+ , 0.0015Eu 3+ , 0.04Mg 2+ , 0.04Si 4+ White long afterglow luminescent material. The sample test is as follows:...

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Abstract

The invention discloses a white long-lasting luminescent material and a synthetic method thereof, and belongs to the technical field of luminescent materials. The material is characterized in that the material takes Y2O2S as a matrix, Tb<3+> and Eu <3+> as activator ions, and Mg<2+> and Si<4+> as coactivation ions; and a chemical general formula of the material is Y2O2S: 0.003Tb<3+>, xEu<3+>, yMg<2+>, ySi<4+>, wherein a mole coefficient x of Eu<3+> is 0.0005-0.002, and a mole number y of Mg<2+> and a mole number y of Si<4+> are 0.02-0.1. The material is synthesized by a high temperature solid phase method. The method comprises the steps that chemical components are weighed according to a stoichiometric ratio; raw materials are mixed fully, then placed into a muffle furnace, calcined in a reducing atmosphere at 950-1100 DEG C for 15-45min, and cooled naturally; and the single-matrix white long-lasting material is obtained. According to the material and the method, white light is synthesized by utilizing 544nm green light emitted by Tb<3+> and 469nm blue light and 626nm red light emitted by Eu<3+>; the color purity of the material is better; the lasting performance is excellent; and the synthetic method of the material is simple, low in production cost and easy to realize.

Description

technical field [0001] The invention relates to a white long afterglow luminescent material and a synthesis method thereof, which belong to the technical field of luminescent materials, and specifically relate to a Y 2 o 2 S as matrix, with Tb 3+ and Eu 3+ as the activator, Mg 2+ 、Si 4+ A white long-lasting luminescent material for co-activated ions and a technical scheme of a synthesis method thereof. Background technique [0002] Long afterglow luminescent material belongs to photoluminescent material. It stores energy under the excitation of ultraviolet light and visible light. After the excitation stops, it slowly releases energy in the form of visible light. It is an energy-saving material and is widely used in emergency lighting, traffic signs, safety Instructions, decoration crafts, etc. So far, the relatively mature long-lasting luminescent materials have covered most of the area from blue to red. The white long-lasting materials that are most suitable for lig...

Claims

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Application Information

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IPC IPC(8): C09K11/84
Inventor 黄平崔彩娥杨帆王磊郝虎在马清亮
Owner TAIYUAN UNIV OF TECH
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