Transparent glass ceramic having double-frequency light absorption and conversion capability and preparation method for transparent glass ceramic

A technology for preparing transparent glass and ceramics, which is applied in the synthesis of transparent glass ceramics, dual-frequency light conversion performance and related transparent glass ceramics. It can solve the problem that there is no way to convert infrared light and ultraviolet light to visible light at the same time, and achieve good thermal stability. and chemical stability, the effect of the preparation method is simple

Inactive Publication Date: 2015-02-18
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no material that can combine these two light conversion methods, and there is no way to convert infrared light and ultraviolet light to visible light at the same time.

Method used

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  • Transparent glass ceramic having double-frequency light absorption and conversion capability and preparation method for transparent glass ceramic
  • Transparent glass ceramic having double-frequency light absorption and conversion capability and preparation method for transparent glass ceramic
  • Transparent glass ceramic having double-frequency light absorption and conversion capability and preparation method for transparent glass ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0028] Matrix raw material selection Al 2 o 3 , Na 2 CO 3 , SiO 2 , CaCO 3 , the crystallite nucleation material is chosen as YF 3 and NaF, the doped luminescent center ion is selected as ErF 3 . Raw material ratio is 15% Al 2 o 3 , 10% Na 2 CO 3 , 45% SiO 2 , 4% CaCO 3 , (8%-x)YF 3 and 18% NaF, xErF 3 , x=1%, 1.5%. Weigh the above powder raw materials, mix them in an agate mortar, add 2 ml of alcohol to grind, then place them in a corundum crucible, heat them in an electric furnace to 1500°C and keep them warm for 1 hour to fully melt them. Afterwards, the glass solution was taken out and quickly poured into a copper mold to form a bulk precursor glass. The obtained bulk precursor glass was placed in an electric furnace for annealing at 660°C for 1 hour to eliminate internal stress and promote microcrystalline crystallization. Sample is through surface polishing, and obtains green light and red light emission under 378nm and 980nm excitation, and the emission ...

Embodiment 5-8

[0033] Matrix raw material selection Al 2 o 3 , Na 2 CO 3 , SiO 2 , CaCO 3 , the crystallite nucleation material is chosen as LuF 3 and NaF, the doped luminescent center ion is selected as ErF 3 . Raw material ratio is 15% Al 2 o 3 , 10% Na 2 CO 3 , 45% SiO 2 , 4% CaCO 3 , (8%-x)LuF 3 and 18% NaF, xErF 3 , x=1%, 1.5%. Weigh the above powder raw materials, mix them in an agate mortar, add 2 ml of alcohol to grind, then place them in a corundum crucible, heat them in an electric furnace to 1500°C and keep them warm for 1 hour to fully melt them. Afterwards, the glass solution was taken out and quickly poured into a copper mold to form a bulk precursor glass. The obtained bulk precursor glass was placed in an electric furnace at 650°C for 2 hours to eliminate internal stress and promote microcrystalline crystallization. Sample is through surface polishing, obtains green light and red light emission under 378nm and 980nm excitation, and the emission spectrum of emb...

Embodiment 9-12

[0037] Matrix raw material selection Al 2 o 3 , Na 2 CO 3 , SiO 2 , the crystallite nucleation material is chosen as LaF 3 , the doped luminescent center ion is selected as ErF 3 . Raw material ratio is 25% Al 2 o 3 , 19% Na 2 CO 3 , 41% SiO 2 , (15%-x)LaF 3 , xErF 3 , x=1%, 1.5%. Weigh the above powder raw materials, mix them in an agate mortar, add 2 ml of alcohol to grind, then place them in a corundum crucible, heat them in an electric furnace to 1500°C and keep them warm for 1 hour to fully melt them. Afterwards, the glass solution was taken out and quickly poured into a copper mold to form a bulk precursor glass. The obtained bulk precursor glass was placed in an electric furnace at 680°C for 2 hours to eliminate internal stress and promote microcrystalline crystallization. Sample is through surface polishing, obtains green light and red light emission under 378nm and 980nm excitation, and the emission spectrum of embodiment 9 is as follows image 3 shown....

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Abstract

The invention discloses transparent glass ceramic having double-frequency light joint absorption and conversion capability and a preparation method for the transparent glass ceramic. The transparent glass ceramic can absorb ultraviolet light and infrared light simultaneously, and convert the light into visible light, is prepared from cheap silicate and aluminate as a base material, and Er<3+> ions as ions activating luminescence centers; the preparation method comprises the following steps: fully grinding and mixing raw materials in proportion; melting the raw materials at a high temperature; pouring and cooling; conducting annealing at an appropriate temperature, The transparent glass ceramic is high in transparency and rigidity, and environment-friendly, and can be produced in a large area.

Description

technical field [0001] The invention relates to the technical field of transparent glass-ceramics synthesis, in particular to a novel dual-frequency light conversion performance and the related field of transparent glass-ceramics. Background technique [0002] As a renewable energy source, solar energy is inexhaustible. In the solar spectrum on the ground, about 99% of the solar radiation energy is distributed in the wide frequency band of 220-2500 nanometers, of which visible light (400-700nm) accounts for 71% of the total solar radiation, and infrared light (700-2500nm) accounts for the total 22% of radiation dose. However, various optoelectronic devices can only absorb and convert light in their specific spectral ranges with high efficiency. The characteristic of optoelectronic devices to selectively utilize light energy has seriously affected the full absorption and utilization of sunlight. [0003] According to reports, frequency conversion luminescence methods are d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16
CPCC03C10/0009
Inventor 王祥夫颜晓红程韶君步妍妍
Owner NANJING UNIV OF POSTS & TELECOMM
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