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Nano-silver modified rare earth-doped frequency conversion luminescent material and preparation method thereof

A rare earth doping and frequency conversion technology, which is applied in the field of luminescent materials and their preparation, enhanced rare earth doped glass frequency conversion luminescent materials and their preparation, can solve the problems of low luminous efficiency and achieve high frequency conversion luminous efficiency, frequency Improvement of conversion luminous efficiency and obvious effect of frequency conversion luminous efficiency

Inactive Publication Date: 2013-09-04
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low frequency conversion luminous efficiency of rare earth doped glass materials under the traditional preparation process, and to provide an enhanced rare earth doped glass frequency conversion luminescent material modified with nano-silver particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) The molar ratio of glass components containing rare earth ions is 55%Te+12%Al+20%Ba+3%Gd+10%Eu. Weigh the raw materials of each component: tellurium oxide, alumina, barium fluoride, Gadolinium fluoride and erbium fluoride, fully mixed and then melted at 950°C for 20min, at the same time, argon gas was introduced for atmosphere protection, so that the raw materials were melted into a liquid state, and then the glass melt was quickly cast to a temperature that had been preheated to 200°C On the stainless steel template, after molding, keep it at a temperature lower than the glass transition temperature of 40 ° C for 4 hours, and anneal it to room temperature at a speed of 10 ° C / min, that is, the glass containing rare earth ions is obtained;

[0046] (2) The molar ratio is 65%Te+12%Al+20%Ba+3%Gd (doped with 1.5%Ag) glassy film containing nano-silver particles. Weighing raw materials: tellurium oxide, aluminum nitrate, barium nitrate , gadolinium nitrate, silver fluori...

Embodiment 2

[0050] (1) The molar ratio is 35%Te+15%Zn+10%Pb+10%B+10%Yb+10%Er+10%Tm glass components containing rare earth ions. Weigh each component raw material: sulfide Tellurium, zinc sulfide, lead sulfide, boron oxide, ytterbium oxide, bait oxide, and thulium oxide are fully mixed and then melted at 900°C for 30 minutes. The melt is quickly cast onto a stainless steel template that has been preheated to 180°C, and after molding, it is kept at 30°C lower than the glass transition temperature for 3 hours, and annealed to room temperature at a rate of 8°C / min to obtain rare earth ion-containing glass;

[0051] (2) The molar ratio is 65%Te+15%Zn+10%Pb+10%B (doped with 0.8%Ag) glassy film containing nano-silver particles. Weighing raw materials: tellurium oxide, zinc nitrate, lead nitrate , boron nitrate, silver sulfide, dissolve tellurium oxide in 1,2-propanediol, use p-toluenesulfonic acid as a catalyst to prepare a 1,2-propanediol tellurium solution with a concentration of 1mol / L, disso...

Embodiment 3

[0055] (1) The molar ratio is 32%Bi+15%Zr+20%Ga+13%Na+10%Nd+10%Sm glass components containing rare earth ions. Weigh each component raw material: bismuth bromide, oxide Zirconium, gallium oxide, sodium oxide, neodymium oxide, and samarium oxide are fully mixed and then melted at 1100 °C for 40 minutes. At the same time, nitrogen is introduced for atmosphere protection, so that the raw materials are melted into a liquid state, and then the glass melt is quickly cast to Preheated to a stainless steel template of 260°C, after molding, keep it at 50°C lower than the glass transition temperature for 4h, and anneal it to room temperature at a rate of 5°C / min to obtain rare earth ion-containing glass;

[0056] (2) The molar ratio is 40%Bi+27%Zr+20%Ga+13%Na (doped with 3% Ag) glassy film containing nano-silver particles. Weighing raw materials: bismuth nitrate, zirconium n-butoxide, Gallium nitrate, sodium nitrate, silver zirconate, zirconium n-butoxide dissolved in butanol and acetic...

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Abstract

The invention provides a nano-silver modified rare earth-doped frequency conversion luminescent material and a preparation method thereof. The nano-silver modified rare earth-doped conversion luminescent material is composed of glass containing rare earth ions and a glassy film containing silver nanoparticles, wherein the glassy film containing the silver nanoparticles is uniformly coated on the surface of the glass containing the rare earth ions. The nano-silver modified rare earth-doped frequency conversion luminescent material is obtained by the steps of firstly preparing the glass containing the rare earth ions; then preparing the glassy film containing the silver nanoparticles; and coating the glassy film containing the silver nanoparticles on the surface of the glass containing the rare earth ions by a spin-coating method or a dip-coating method. The composite luminescent material has good optical performance and thermal stability. With irradiation of an excitation light, high frequency conversion luminous efficiency can be realized by using local field enhancement effect of the silver nanoparticles. The enhancement of the luminous efficiency can reach as high as 15 times, thereby effectively compensating the low luminous efficiency of frequency conversion glass materials.

Description

technical field [0001] The invention provides a luminescent material and a preparation method thereof, in particular relates to an enhanced rare earth-doped glass frequency conversion luminescent material modified by nano-silver particles and a preparation method thereof, belonging to the technical field of frequency conversion luminescent materials. Background technique [0002] Rare earth-doped frequency conversion luminescence technology is widely used in solid-state lasers, data storage, general lighting (such as incandescent lamps), background light sources (such as three-dimensional It has great application value in sensing technology (such as infrared remote sensing, environmental monitoring), solar cells, anti-counterfeiting technology and military confrontation. Glass as a rare earth doped host material has the following advantages: the rare earth doping concentration in the glass material is high, and the energy level splitting and fluorescence emission of rare ear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/02C03C4/12C03C3/23C03C3/15C03C3/253C03C3/062C03C3/095C03C3/072
Inventor 胡曰博
Owner KUNMING UNIV OF SCI & TECH
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