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Luminous enhanced terbium-doped nano microcrystalline glass and preparation method thereof

A technology of luminescence enhancement and nano-crystallite, which is applied in the field of luminescent materials, can solve problems such as insufficient luminous intensity and obstruction of luminous intensity, and achieve the effects of avoiding concentration quenching effect, facilitating absorption, and good permeability

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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  • Luminous enhanced terbium-doped nano microcrystalline glass and preparation method thereof
  • Luminous enhanced terbium-doped nano microcrystalline glass and preparation method thereof
  • Luminous enhanced terbium-doped nano microcrystalline glass and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Use an analytical balance to weigh 0.590g of analytically pure calcium nitrate tetrahydrate (Ca(NO 3 ) 2 4H 2 O) and 0.113g of analytically pure terbium nitrate hexahydrate (Tb(NO 3 ) 3 ·6H 2 O) dissolved in 10ml of distilled water, prepared to contain Ca concentration of 0.25mol / L 2+ 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 luminescent glass of the present invention is prepared. Enhanced terbium-doped nanoglass-ceramics.

[0033] figure 1 The comparison diagram of the excitation and emission spectra of the luminescence-enhanced terbium-doped nanocrystalline glass-ceramics prepar...

Embodiment 2

[0035] Use an analytical balance to weigh 0.529g of analytically pure strontium nitrate (Sr(NO3 ) 2 ) and 0.113g of analytically pure terbium nitrate hexahydrate (Tb(NO 3 ) 3 ·6H 2 O) Dissolved in 10ml of distilled water, prepared to contain Sr at a concentration of 0.25mol / L 2+ 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 luminescent glass of the present invention is prepared. Enhanced terbium-doped nanoglass-ceramics.

[0036] figure 2 The comparison diagram of the excitation and emission spectra of the luminescence-enhanced terbium-doped nanocrystalline glass-ceramics prepared for this ex...

Embodiment 3

[0038] Use an analytical balance to weigh 0.653g of analytically pure barium nitrate (Ba(NO 3 ) 2 ) 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 Ba that concentration is 0.25mol / L 2+ and 0.025mol / L of Tb 3+ mixed solution. Soak the nano-microporous glass in the mixed solution for 2 hours, take it out, let it dry at room temperature, and 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 luminescent glass of the present invention is prepared. Enhanced terbium-doped nanoglass-ceramics.

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Abstract

The invention relates to luminous enhanced terbium-doped nano microcrystalline glass and a preparation method thereof. The preparation method comprises the following steps of: (1) preparing mixed solution containing terbium ions and at least one of calcium, strontium and barium ions; (2) soaking nano micropore glass into the mixed solution for 0.5 to 50 hours; and (3) sintering the nano micropore glass soaked in the step (2) to form the luminous enhanced terbium-doped nano microcrystalline glass, wherein the sintering temperature is between 1,100 and 1,300 DEG C. Compared with single terbium-doped high silica glass, the luminous intensity of the luminous enhanced terbium-doped nano microcrystalline glass under the excitation of ultraviolet light and cathode rays is obviously enhanced; and the nano microcrystalline glass has excellent chemical stability, thermal stability and machinability, and has good application prospect in the optoelectronic fields of illumination, display, laser, information and the like.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a luminescence-enhanced terbium-doped 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 light...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C4/12
Inventor 周明杰乔延波马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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