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Luminescent glass doped with praseodymium and erbium and its preparation method

A technology of luminescent glass and glass melt, 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., and achieve low visible light absorption rate , the effect of high luminous intensity

Active Publication Date: 2022-04-05
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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  • Luminescent glass doped with praseodymium and erbium and its preparation method
  • Luminescent glass doped with praseodymium and erbium and its preparation method

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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 molar coefficient of the contained oxides as the calculation basis, the raw material contains LO with a molar coefficient a and Y with a molar coefficient b 2 o 3 , T with molar coefficient c 2 O, SiO with molar coefficient d 2 , TiO with molar coefficient e 2 , Pr with molar coefficient y 6 o 11 and Er with molar coefficient x 2 o 3 .

[0047] In th...

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. These raw materials were mixed with boric acid (the specification is analytically pure, and the dosage is 4wt% of the total weight of the raw materials), thoroughly ground and mixed evenly, and then placed in a heating resistance furnace, and burned at 1550° C. for 4 hours to obtain a glass melt. 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 luminescent glass doped with praseodymium and erbium and a preparation method thereof. The components of the luminescent glass include LO with a molar coefficient a and Y with a molar coefficient b 2 o 3 , T with molar coefficient c 2 O, SiO with molar coefficient d 2 , TiO with molar coefficient e 2 , Pr with molar coefficient y 6 o 11 and Er with molar coefficient x 2 o 3 ; L is selected from one or more of Mg, Ca, Sr and Ba elements; T is selected from one or more of Li, Na and K elements. The luminescent glass of the invention can emit red fluorescence under the excitation of blue light, and has lower 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 Patents(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