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Praseodymium and erbium doped luminescent glass and preparation method thereof

A luminous glass, mole fraction technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of low luminous intensity, low visible light transmittance, short excitation wavelength, etc.

Active Publication Date: 2021-09-14
BAOTOU RES INST OF RARE EARTHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned luminescent glass generally requires a shorter excitation wavelength, and the transmittance to visible light is not high, in addition, the luminous intensity is also low

Method used

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  • Praseodymium and erbium doped luminescent glass and preparation method thereof

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preparation example Construction

[0045] The preparation method of the luminescent glass doped with praseodymium and erbium of the present invention comprises the following steps: mixing and burning the raw materials of the chemical composition of the luminescent glass and a flux to obtain molten glass; casting the molten glass into a mold for annealing Treatment, that is, to obtain luminescent glass doped with praseodymium and erbium.

[0046] The raw material is selected according to the chemical composition of the luminescent glass, as long as it can be converted into the corresponding chemical composition (oxide) under burning conditions. Based on the mole fraction of the contained oxides as the calculation basis, the raw material contains LO with a mole fraction a and Y with a mole fraction b 2 o 3 , T with a mole fraction of c 2 O, SiO with a mole fraction of d 2 , TiO with mole fraction e 2 , Pr with mole fraction y 6 o 11 and Er with mole fraction x 2 o 3 .

[0047] In the present invention, L...

Embodiment 1

[0065] Weigh the CaCO according to the ratio of each oxide in the chemical composition shown in Table 1 3 (analytical pure), Y 2 (CO 3 ) 3 (99.99wt%), LiCl (analytical pure), SiO 2 (analytical pure), TiO 2 (analytical pure), Pr 6 o 11 (99.99wt%), Er 2 o 3 (99.99wt%) as raw material. Mix these raw materials with boric acid (the specification is analytically pure, and the dosage is 4wt% of the total weight of the raw materials), thoroughly grind and mix evenly, then place them in a heating resistance furnace, and burn them at 1550° C. for 4 hours to obtain molten glass. The molten glass was cast into a mold, then annealed at 800° C. for 4 hours under the protection of nitrogen, and cooled to room temperature to obtain a luminescent glass sample doped with praseodymium and erbium. See Table 2 for performance.

Embodiment 2

[0067] According to the ratio of each oxide in the composition formula shown in Table 1, the CaCO 3 (analytical pure) replaced by SrCl 2 (analytical pure), and change each raw material consumption, all the other conditions are identical with embodiment 1. See Table 2 for performance.

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Abstract

The invention discloses a praseodymium and erbium doped luminescent glass and a preparation method thereof. The luminescent glass comprises LO with a molar fraction of a, Y2O3 with a molar fraction of b, T2O with a molar fraction of c, SiO2 with a molar fraction of d, TiO2 with a molar fraction of e, Pr6O11 with a molar fraction of y and Er2O3 with a molar fraction of x; L is selected from one or more of Mg, Ca, Sr and Ba elements; and T is selected from one or more of Li, Na and K elements. The luminescent glass disclosed by the invention can emit red fluorescence under the excitation of blue light, and has relatively low visible light absorption rate.

Description

technical field [0001] The invention relates to a luminescent glass doped with praseodymium and erbium and a preparation method thereof. Background technique [0002] Because of their special electronic layer structure, rare earths have broad-spectrum properties unmatched by general elements, and the luminescence of rare earths almost covers the entire range of solid luminescence. Compared with the packaging materials of traditional white LED lamps, the luminescent glass with rare earth element components has the advantages of high luminous purity, rich colors, and stable physical and chemical properties. However, the excitation wavelength of the luminescent glass prepared by adding rare earth element components is relatively short, and the light transmittance is not high, and the luminous intensity is low. [0003] CN107010837A discloses a lead-free low melting point sealing glass doped with rare earth elements, including basic glass oxides, low expansion refractory materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/062C03C4/12C03B19/02
CPCC03C3/062C03C4/12C03B19/02
Inventor 王忠志沈雷军乔鑫闫震李波高乐乐周永勃
Owner BAOTOU RES INST OF RARE EARTHS