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Light-accumulation long-afterglow luminous material

A technology of long afterglow luminescence and elements, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., and can solve the problem of not seeing red long afterglow materials

Inactive Publication Date: 2004-05-19
DAUAN LUMEI OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Y 2 o 2 S: Eu and (Y, Gd) 2 o 2 S:Eu is widely used as a cathode ray material, and its luminous color is red, but there is no report of its red long afterglow material

Method used

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  • Light-accumulation long-afterglow luminous material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0052] Me=Ca, Ln=Y, Yb, R=NH 4 Cl, Na 2 CO 3

[0053] a=0.004, b=0.9945, c=0.81

[0054] x=0.0015, y=0

[0055] raw material name

[0056] Put the above-mentioned raw materials into a mortar, grind and mix them carefully, put them into a corundum crucible, and heat them in 98% N at 1200°C. 2 / 2%H 2 Sintered in a reduction furnace for 4 hours, ground into fine powder after cooling, carefully washed with water and then dried to obtain the sample of the embodiment. The material glows orange-red.

example 2

[0058] Me=Ca, Ln=La, R=Li 3 PO 4 , K 2 CO 3 Re=Si

[0059] a=1.0, b=0.994, c=0.9

[0060] x=0.001, y=0.001

[0061] raw material name

[0062] The synthesis method is the same as in Example 1, and the obtained material emits orange-red light.

example 3

[0064] Me=Mg, Ln=Y, R=K 3 PO 4 , Na 2 CO 3 Re = Al, Ti

[0065] a=0.005, b=0.994, c=0.9

[0066] x=0.001, y=0.02

[0067] raw material name

[0068] Put the above raw materials into a mortar, grind and mix them carefully, put them into a corundum crucible, sinter in a high-temperature furnace at 1200°C for 1 hour, cool, grind, wash carefully with water, and dry to obtain the samples of the examples. The material glows orange-red.

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Abstract

A light-accumulating long-afterglow luminous material has a chemical formula: aMe delta. bLn2 delta'3.CR:EUx, Rey, where Me is one or more of Mg, Ca, Sr, Ba, Zn, Mn and Cd, Ln is one or more of Sc, Y, La Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, delta or delta' is one or both of O and S, R is one or more of B2O3, MCl, M2O and PsO5, M is one or more of Li, Na, K, NH4 and H, a=0.00001-1.5 b=0.00001-1.5, c=0.1-2.5, x=0-0.4 and y=0-0.8. Its preparing process includes mixing and sinter at 1100-1400 deg.C.

Description

technical field [0001] The invention relates to a long-lasting luminescent material, in particular to a metal sulfide, a sulfur oxide long-lasting luminescent material and a manufacturing method thereof. Background technique [0002] The traditional zinc sulfide series long afterglow materials have been continuously developed since their invention at the end of the 19th century, and several typical products have been formed, such as ZnS:Cu (green luminescence), (Ca Sr)S:Bi (blue luminescence), ( Ca·Sr)S:Eu (red luminescence), the disadvantages of these materials are that they are easy to decompose in the air, have low luminous intensity, and short afterglow time, generally only 0.5-2 hours. In particular, there is only (Ca·Sr)S:Eu as the long afterglow material that emits red light. Compared with the other two long afterglow materials, the luminescence time of this material is shorter, generally within 0.5 hours, and its chemical properties are extr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/84
Inventor 肖志国罗昔贤
Owner DAUAN LUMEI OPTOELECTRONICS