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

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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

CN107418571BActive Publication Date: 2019-12-27LANZHOU UNIVERSITY

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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

Patent Timeline

27 Dec 2019

Publication

CN107418571B

IPC: C09K11/66

CPC: C09K11/7706; C09K11/7721; C09K11/7749; C09K11/7758; C09K11/7764

Inventors: 王育华; 丁鑫