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A kind of yellow long afterglow luminescent material and preparation method thereof

A long-lasting luminescence and yellow technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of aluminate long-lasting luminescent materials, monotonous luminous color, poor chemical stability, etc., and improve the initial luminous brightness , good chemical stability and simple preparation scheme

Active Publication Date: 2021-09-17
LINGNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the luminous brightness and afterglow length of the luminescent material of the sulfide system can barely meet the requirements of use, its chemical stability is poor, it is easy to deliquesce in the air, and the production process is complicated. The waste generated during the synthesis process and the released H 2 S gas seriously pollutes the environment
At present, the main disadvantage of most commercial aluminate long afterglow materials is that the luminous color is monotonous, and the emission spectrum is concentrated around 520nm, and the aluminate long afterglow luminescent materials with emission wavelength greater than 560nm are relatively scarce.
[0004] So far, Sr 12 Al 14 o 33 Long-lasting luminescent materials as hosts have not been involved

Method used

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  • A kind of yellow long afterglow luminescent material and preparation method thereof
  • A kind of yellow long afterglow luminescent material and preparation method thereof
  • A kind of yellow long afterglow luminescent material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Example 1 Sr 11.1 al 14 o 33 : 0.3Eu 2+ , 0.3 Dy 3+ , 0.3Ho 3+Synthesis of long-lasting luminescent materials

[0035] 1, its synthetic method, comprises the following steps:

[0036] (1) Weigh strontium carbonate SrCO 3 : 1.6552g, aluminum oxide Al 2 o 3 : 0.7283g, europium oxide Eu 2 o 3 : 0.0528g, dysprosium oxide Dy 2 o 3 : 0.0560g and holmium oxide Ho 2 o 3 : 0.0567g, and boric acid H 3 BO 3 : 0.0062g (according to Sr 12 Al 14 o 33 10mol% calculation);

[0037] (2) Mix and grind the above raw materials and place them in a corundum crucible, put them into a high-temperature furnace with an argon and hydrogen mixed gas atmosphere for high-temperature sintering, the sintering temperature is 1300 ° C, after sintering for 4 hours, naturally cool to room temperature, and again Grinding, that can get Sr 12 Al 14 o 33 It is a yellow long-lasting luminescent powder doped with rare earth ions in the matrix. The luminescent material has high brightness...

Embodiment 2

[0044] Example 2 Sr 11.1 Al 14 o 33 :0.3Eu 2+ , 0.3 Dy 3+ , 0.3Ho 3+ Synthesis of long-lasting luminescent materials

[0045] 1, its synthetic method, comprises the following steps:

[0046] (1) Weigh strontium carbonate SrCO 3 : 1.6552g, aluminum oxide Al 2 o 3 : 0.7283g, europium oxide Eu 2 o 3 : 0.0528g, dysprosium oxide Dy 2 o 3 : 0.0560g and holmium oxide Ho 2 o 3 : 0.0567g, and boric acid H 3 BO 3 : 0.0062g (according to Sr 12 Al 14 o 33 10mol% calculation);

[0047] (2) The above raw materials are fully mixed and ground, placed in a corundum crucible, placed in a high-temperature furnace with a reducing gas mixture atmosphere for high-temperature sintering, the sintering temperature is 1300 ° C, after sintering for 4 hours, naturally cooled to room temperature, and then ground again, that is can be obtained by Sr 12 Al 14 o 33 It is a yellow long-lasting luminescent powder doped with rare earth ions in the matrix.

Embodiment 3

[0048] Example 3 Sr 11.3 Al 14 o 33 :0.1Eu 2+ , 0.3 Dy 3+ , 0.3Ho 3+ Synthesis of long-lasting luminescent materials

[0049] 1, its synthetic method, comprises the following steps:

[0050] (1) Weigh strontium carbonate SrCO 3 : 1.6850g, aluminum oxide Al 2 o 3 : 0.7283g, europium oxide Eu 2 o 3 : 0.0176g, dysprosium oxide Dy 2 o 3 : 0.0560g and holmium oxide Ho 2 o 3 : 0.0567g, and boric acid H 3 BO 3 : 0.0062g (according to Sr 12 Al 14 o 33 10mol% calculation);

[0051] (2) The above raw materials are fully mixed and ground, placed in a corundum crucible, placed in a high-temperature furnace with a reducing gas mixture atmosphere for high-temperature sintering, the sintering temperature is 1300 ° C, after sintering for 4 hours, naturally cooled to room temperature, and then ground again, that is can be obtained by Sr 12 Al 14 o 33 It is a yellow long-lasting luminescent powder doped with rare earth ions in the matrix. The luminescent material has hig...

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Abstract

The present invention disclosed a yellow and long surplus material and their preparation methods.This new yellow long surplus emitting material, its chemical characteristics are SR 12‑x‑y‑z AL 14 O 33 : Xeu 2+ , YDY 3+ , Zho 3+ ; Among them, SR 12 AL 14 O 33 For the matrix, EU 2+ , DY 3+ , HO 3+ To activate agent ions; X, Y, and Z are Moore numbers, 0 <x ≤1, 0 ≤y ≤ 1, 0 ≤z ≤ 1 in the formula.The present invention uses SR 12 AL 14 O 33 As a matrix, a rare earth ion EU is mixed with high -temperature solid -solid -fixed reactions 2+ , DY 3+ Or HO 3+ , Given the brightness of the light, good chemical stability, and long time of time, have a wide stimulating band. Under the inspiration of ultraviolet light or sunlight, you can see the surplus of 590 nm emitting. The raw materials are easy to obtain.No pollution.

Description

technical field [0001] The invention belongs to the technical field of long afterglow luminescent materials. More specifically, it relates to a yellow long-lasting luminescent material activated by rare earth ions and a preparation method thereof. Background technique [0002] Long afterglow luminescent material is a new type of functional material that can absorb external excitation light, store it, and then emit light in the dark. It has the characteristics of energy saving and recyclable use, and is widely used in emergency instructions, low-light lighting, arts and crafts And architectural decoration, high-energy ray detection, information storage and display equipment, laser equipment and other fields. Existing long afterglow materials in the visible light region are mainly divided into red, yellow and blue. At present, the development of yellow long-lasting luminescent materials with excellent performance is still a difficult problem to overcome. For example, the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/64
CPCC09K11/7792
Inventor 谢伟高玲英黄惠欣汤考蓝谢木标
Owner LINGNAN NORMAL UNIV