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Green light-emitting nano microcrystalline glass and preparation method thereof

A nano-crystal and nano-pore technology is applied in the field of green luminescent nano-ceramic glass and its preparation, which can solve the problems of insufficient luminous intensity and obstruction of luminous intensity, avoid concentration quenching effect, facilitate absorption and thermal expansion Low coefficient effect

Inactive Publication Date: 2011-05-11
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with luminescent phosphors, the luminescence intensity of rare earth ion-doped high-silica glass is not strong enough. How to enhance the luminescence intensity of rare earth ions in high-silica glass has become a major technical problem hindering its wide application.

Method used

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  • Green light-emitting nano microcrystalline glass and preparation method thereof
  • Green light-emitting nano microcrystalline glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Use an analytical balance to weigh 0.958g analytically pure yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O) and 0.113g of analytically pure terbium nitrate hexahydrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in the distilled water of 10ml, be prepared to contain the Y that concentration is 0.25mol / L 3+ and 0.025mol / L of Tb 3+ mixed solution. Soak the nano-microporous glass in the mixed solution for 3 hours, take it out, let it dry at room temperature, and then place it in a high-temperature furnace. The speed is raised to 900°C, and then raised to 1150°C at a speed of 5°C / min, and sintered at 1150°C for 2 hours. The sintered glass is cooled to room temperature with the furnace and taken out. After cutting and polishing, the green glass of the present invention is prepared. Luminous nano glass-ceramic.

[0031] figure 1 The comparison diagram of the excitation and emission spectra of the green luminescent nano-glass-ceramics prepared for this example and the terbium...

Embodiment 2

[0033] Use an analytical balance to weigh 0.479g of analytically pure yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O) and 0.113g of analytically pure terbium nitrate hexahydrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in the distilled water of 10ml, be prepared to contain the Y that concentration is 0.125mol / L 3+ and 0.025mol / L of Tb 3+mixed solution. Soak the nano-microporous glass in the mixed solution for 5 hours, take it out, let it dry at room temperature, and then place it in a high-temperature furnace. The speed is raised to 900°C, and then raised to 1200°C at a speed of 5°C / min, and sintered at 1200°C for 3 hours. The sintered glass is cooled to room temperature with the furnace and taken out. After cutting and polishing, the green glass of the present invention is prepared. Luminous nano glass-ceramic.

Embodiment 3

[0035] Use an analytical balance to weigh 1.915g of analytically pure yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O), 2.257g analytically pure gadolinium nitrate hexahydrate (Gd(NO 3 ) 3 ·6H 2 O) and 0.00453g of analytically pure terbium nitrate hexahydrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in the distilled water of 10ml, be prepared to contain the Y that concentration is 0.5mol / L 3+ , 0.5mol / L of Gd 3+ and 0.001mol / L of Tb 3+ mixed solution. Soak the nano-microporous glass in the mixed solution for 10 hours, take it out, let it dry at room temperature, and then place it in a high-temperature furnace. The speed is raised to 900°C, and then raised to 1250°C at a speed of 5°C / min, and sintered at 1250°C for 2 hours. The sintered glass is cooled to room temperature with the furnace and taken out. After cutting and polishing, the green glass of the present invention is prepared. Luminous nano glass-ceramic.

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PUM

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Abstract

The invention relates to green light-emitting nano microcrystalline glass and a preparation method thereof. The preparation method comprises the following steps of: (1) preparing a mixed solution containing terbium ions and at least one type of yttrium ions and gadolinium ions; (2) dipping nano microporous glass into the mixed solution for 0.5-50h; and (3) sintering the dipped nano microporous glass in the step (2) to form the green light-emitting nano microcrystalline glass, wherein the sintering temperature is 1100-1300 DEG C. The terbium ion-doped green light-emitting nano microcrystalline glass obtained in the invention has obviously enhanced luminous intensity under the excitation of ultraviolet light and cathode ray in comparison with single terbium-doped high silicate glass, excellent chemical stability, heat stability and machinability and favorable application prospects in the photoelectron fields such as lighting, displaying, laser, information and the like.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a green luminescent nano glass-ceramic and a preparation method thereof. Background technique [0002] By introducing rare earth ions into the micropores of the nano-microporous glass, and then shrinking the micropores of the microporous glass through high-temperature solid-state sintering, a dense and transparent rare-earth ion-doped high-silica luminescent glass can be obtained. Due to rare earth ions doping SiO in high silica glass matrix 2 The content of rare earth ions is very high, and the glass composition is similar to quartz glass. Therefore, rare earth ion-doped high-silica glass has excellent chemical stability, mechanical strength, thermal shock resistance, high-energy ion radiation resistance, light transmission and transparency. Processability. Therefore, rare earth-doped high-silica luminescent glass fully meets the needs of new display and lighting technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C4/12
Inventor 周明杰马文波乔延波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD