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a mn 2+ Doped yellow long-lasting luminescent material and preparation method thereof

A technology for long afterglow luminescence and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of short afterglow time, complex preparation process, low luminous intensity, etc., and achieve long afterglow duration, simple preparation method, and luminescence. high intensity effect

Active Publication Date: 2019-12-27
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are only a small amount of yellow and red long afterglow materials among various aluminate system and silicate system long afterglow materials, and compared with other commercial long afterglow materials, most of them have poor chemical stability. The characteristics of low luminous intensity and short duration are difficult to meet actual needs
In addition, rare earth ions Eu 2+ The price is relatively expensive, which will increase the cost in the actual production process, which is not conducive to product promotion
[0004] Patent "Orange-yellow long-lasting luminescent material and production method" (application number ZL200410020722.X, announcement number CN1266250, announcement date 2006.07.26) and patent "red rare earth long-lasting phosphor" (patent number ZL02125512.1, announcement number CN1216125, Announcement date 2005.08.24) disclosed long-lasting luminescent materials based on sulfide, but the preparation process of these long-lasting luminescent materials is relatively complicated, and harmful sulfur-containing gases are likely to be generated during the preparation process, which will cause harm to the human body and the environment
The patent "orange yellow long afterglow phosphor and its preparation method" (patent number 200710056035.7, announcement number CN100575452, announcement date 2009.12.30) discloses the use of Eu 2+ Orange-yellow long-lasting luminescent material SrSiO as activated ion 5 :Eu 2+ , Dy 3+ , the material requires a higher temperature during preparation, which wastes energy on the one hand and increases the manufacturing cost of the material on the other hand
The patent "A yellow long-lasting luminescent material and its preparation method" (application number 201410192345.1, announcement number CN103952152A, announcement date 2014.07.30) discloses the use of Eu 2+ Yellow long-lasting luminescent material Ba 3-x-y P 4 o 13 :Eu x , Ga y , the afterglow time of this material is short, which is not conducive to industrial application

Method used

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  • a mn <sup>2+</sup> Doped yellow long-lasting luminescent material and preparation method thereof
  • a mn <sup>2+</sup> Doped yellow long-lasting luminescent material and preparation method thereof
  • a mn <sup>2+</sup> Doped yellow long-lasting luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 A kind of Mn 2+ Doped yellow long-lasting luminescent material, the chemical expression of which is Ca 1.998 sn 1.974 Al 2 o 9 : 0.002Mn 2+ , 0.026Gd 3+ .

[0027] The Mn 2+ A method for preparing a doped yellow long-lasting luminescent material, comprising the following steps:

[0028] (1) Ca 1.998 sn 1.974 Al 2 o 9 : 0.002Mn 2+ , 0.026Gd 3+ Stoichiometric ratio shown in molecular formula, weigh 0.38712g CaCO 3 , 0.57592g SnO 2 , 0.30201g Al(OH) 3 , 0.00034g MnO 2 and 0.00912g Gd 2 o 3 as a raw material;

[0029] (2) Grinding each raw material component to micron level to obtain raw material powder;

[0030] (3) Calcining the raw material powder at 1500°C under an air atmosphere, and cooling to room temperature with the furnace after 10 hours to obtain a calcined product;

[0031] ⑷ After the calcined product is ground, the yellow long-lasting luminescent material can be obtained.

[0032] figure 1 Shown is the XRD spectrum of the yellow ...

Embodiment 2

[0039] Example 2 A kind of Mn 2+ Doped yellow long-lasting luminescent material, the chemical expression of which is Ca 1.998 sn 1.974 Al 2 o 9 : 0.002Mn 2+ , 0.026Ho 3+ .

[0040] The Mn 2+ A method for preparing a doped yellow long-lasting luminescent material, comprising the following steps:

[0041] ⑴ Press Ca 1.998 sn 1.974 Al 2 o 9 : 0.002Mn 2+ , 0.026Ho 3+ For the stoichiometric ratio shown in the molecular formula, weigh 0.38697g CaCO 3 , 0.57569g SnO 2 , 0.30189g Al(OH) 3 , 0.00034g MnO 2 and 0.00951g Ho 2 o 3 as a raw material;

[0042] (2) Grinding each raw material component to micron level to obtain raw material powder;

[0043] (3) Calcining the raw material powder at 1500°C under an air atmosphere, and cooling to room temperature with the furnace after 10 hours to obtain a calcined product;

[0044] ⑷ After the calcined product is ground, the yellow long-lasting luminescent material can be obtained.

Embodiment 3

[0045] Example 3 A kind of Mn 2+ Doped yellow long-lasting luminescent material, the chemical expression of which is Ca 1.998 sn 1.980 Al 2 o 9 : 0.002Mn 2+ , 0.020 Ce 3+ .

[0046] The Mn 2+ A method for preparing a doped yellow long-lasting luminescent material, comprising the following steps:

[0047] ⑴ Press Ca 1.998 sn 1.980 Al 2 o 9 : 0.002Mn 2+ , 0.020 Ce 3+ Stoichiometric ratio shown in molecular formula, weigh 0.38731g CaCO 3 , 0.57799g SnO 2 , 0.30224g Al(OH) 3 , 0.00034g MnO 2 and 0.00703 g CeO 2 as a raw material;

[0048] (2) Grinding each raw material component to micron level to obtain raw material powder;

[0049] (3) Calcining the raw material powder at 1500°C under an air atmosphere, and cooling to room temperature with the furnace after 10 hours to obtain a calcined product;

[0050] ⑷ After the calcined product is ground, the yellow long-lasting luminescent material can be obtained.

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Abstract

The invention relates to a Mn<2+> doped yellow long-lasting phosphor material. The chemical expression of the phosphor material is Ca(2-x)Sn(2-y)Al2O9:xMn<2+>,yR<3+>, wherein x is larger than or equal to 0.002 and smaller than or equal to 0.080, y is larger than or equal to 0 and smaller than or equal to 0.120, R is one of Tb, Ce, Dy, Tm, Nd, Gd, Y, Er, La, Pr, Sm, Yb, Lu and Ho. The invention further discloses a preparation method of the phosphor material. The prepared yellow long-lasting phosphor material has the advantages of high luminescent intensity, long persistence and the like.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to a Mn 2+ Doped yellow long-lasting luminescent material and its preparation method. Background technique [0002] Long afterglow luminescent material is a kind of photoluminescent material, after being irradiated by light sources such as sunlight and long-wave ultraviolet light for a short time, a part of the light energy is stored, and after the light source is turned off, it can continue to slowly emit light in the form of visible light for a long period of time. Release this energy. Long afterglow luminescent materials have a wide range of uses. In addition to being used as luminous sign materials, they can also be used in emergency passage lighting, fire signs and other weak lighting indicating equipment, which is energy-saving and environmentally friendly. It can also be used in the field of photoelectric information (high energy Particle and defect damage det...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/66
CPCC09K11/7706C09K11/7721C09K11/7749C09K11/7758C09K11/7764
Inventor 王育华丁鑫
Owner LANZHOU UNIVERSITY
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