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High-luminous-intensity terbium-activated silicate glass and preparation method thereof

A silicate glass and luminous intensity technology, applied in the field of high luminous intensity terbium-activated silicate glass and its preparation, can solve the problems of high defect state density, unsatisfactory energy transfer efficiency between ions, etc., and achieve enhanced luminescence The effect of strength, simple preparation process and easy adjustment of chemical composition

Inactive Publication Date: 2012-05-16
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sensitization is an energy transfer process between two nearest neighbor terbium ions, but due to the high density of defect states in the glass, the energy transfer efficiency between ions is not ideal

Method used

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  • High-luminous-intensity terbium-activated silicate glass and preparation method thereof
  • High-luminous-intensity terbium-activated silicate glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] One, the preparation method of the terbium-activated silicate glass of high luminous intensity comprises the following steps:

[0069] The first step: formula (by mass percentage)

[0070] SiO 2 45.3%

[0071] al 2 o 3 1.5%

[0072] B 2 o 3 3.0%

[0073] BaO 9.9 %

[0074] Cs 2 O 9.9 %

[0075] Na 2 O 2.8 %

[0076] Li 2 O 2.0 %

[0077] K 2 O 1.3 %

[0078] Gd 2 o 3 9.0%

[0079] Tb 4 o 7 15.3%;

[0080] Step 2: After fully mixing the above formula evenly, melt it in the air atmosphere at 1500-1550 ℃ for 3-5 hours by melting method to obtain molten glass;

[0081] Step 3: Pour the molten glass into the preheated mold to shape it;

[0082] Step 4: heat preservation at 500-650° C. for 2-4 hours in a muffle furnace for annealing treatment.

[0083] 2. Test

[0084] Cut the prepared glass into 25 mm×10 mm×5 mm samples, and test the ultraviolet ...

Embodiment 2

[0088] The preparation method is the same as in Example 1, except that the glass formulation is different.

[0089] Formula comprises by mass percentage:

[0090] SiO 2 42.3%

[0091] al 2 o 3 1.5%

[0092] B 2 o 3 6.0%

[0093] BaO 9.9 %

[0094] Cs 2 O 9.9 %

[0095] Na 2 O 2.8 %

[0096] Li 2 O 2.0 %

[0097] K 2 O 1.3 %

[0098] Gd 2 o 3 9.0%

[0099] Tb 4 o 7 15.3%.

[0100] Cut the prepared glass into 25 mm×10 mm×5 mm samples, and test the ultraviolet excitation emission spectrum after polishing (such as figure 1 Middle—▲—shown in the curve).

Embodiment 3

[0102] The preparation method is the same as in Example 1, except that the glass formulation is different.

[0103] Formula comprises by mass percentage:

[0104] SiO 2 36.3%

[0105] al 2 o 3 1.5%

[0106] B 2 o 3 12.0%

[0107] BaO 9.9 %

[0108] Cs 2 O 9.9 %

[0109] Na 2 O 2.8 %

[0110] Li 2 O 2.0 %

[0111] K 2 O 1.3 %

[0112] Gd 2 o 3 9.0%

[0113] Tb 4 o 7 15.3%.

[0114] Cut the prepared glass into 25 mm×10 mm×5 mm samples, and test the ultraviolet excitation emission spectrum after polishing (such as figure 1 Middle—▼—shown in the curve).

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Abstract

The invention relates to high-luminous-intensity terbium-activated silicate glass and a preparation method thereof. The invention belongs to the field of luminescent materials. According to the invention, B2O3 with high phonon energy is added into a terbium-activated silicate glass formula; the mixture is well mixed; and preparation is carried out through high-temperature fusing and an annealing treatment. B2O3 takes 2-20% of a total weight of the glass formula. The glass and the method are advantaged in that: with he prepared terbium-activated silicate glass, the luminous intensity of Tb<3+> is effectively improved. The luminescent glass can be used in fields such as displaying, illumination and photoelectric devices.

Description

technical field [0001] The invention belongs to the field of luminescent materials, in particular to a terbium-activated silicate glass with high luminous intensity and a preparation method thereof. Background technique [0002] Rare earth-doped glasses have attracted extensive attention from scholars at home and abroad in recent years due to their characteristics such as easy adjustment of chemical composition, good optical uniformity, easy realization of large size, and simple preparation methods. In the common rare earth (Ce 3+ 、Eu 3+ , Tb 3+ 、Dy 3+ etc.) doped glass, Tb 3+ Doped silicate glass has high luminous intensity and good transparency, and the fluorescence emission mainly comes from 5 D. 4 energy level, producing strong green fluorescence in a narrow band at 550 nm, which matches the sensitive wavelength of the CCD element. Therefore, Tb 3+ Doped silicate glass has always been a research hotspot of rare earth materials. [0003] Further increase Tb 3+ A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/12C03C3/068C03C3/097
Inventor 顾牡黄世明金鑫杰刘小林官周国张志斌
Owner TONGJI UNIV
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