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Nano-gold 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 frequency conversion luminescent materials, can solve the problems of low luminous efficiency and achieve high frequency conversion luminous efficiency, easy detection, and simple and easy methods

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 by nano-gold particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) According to the molar ratio of 50%Te+10%Al+25%Ba+5%Gd+10%Eu glass component containing rare earth ions, weigh the raw materials of each component: tellurium oxide, aluminum oxide, barium fluoride, Gadolinium fluoride and erbium fluoride are fully mixed and then melted at 900°C for 30 minutes. At the same time, argon gas is introduced to protect the atmosphere, so that the raw materials are melted into a liquid state, and then the glass melt is quickly cast until it has been preheated to 210°C. On the stainless steel template, after forming, keep it at a temperature lower than the glass transition temperature of 30 °C for 5 hours, and anneal at a speed of 8 °C / min to room temperature, that is, the glass containing rare earth ions is obtained;

[0046] (2) The molar ratio is 60%Te+10%Al+25%Ba+5%Gd (doped with 1.2% Au) glassy thin film containing nano-gold particles Weighing raw materials: tellurium oxide, aluminum nitrate, barium nitrate , gadolinium nitrate, chloroa...

Embodiment 2

[0050] (1) According to the molar ratio of 40%Te+10%Zn+10%Pb+10%B+10%Yb+10%Er+10%Tm glass components containing rare earth ions, weigh the raw materials of each component: vulcanization Tellurium, zinc sulfide, lead sulfide, boron oxide, ytterbium oxide, bait oxide, and thulium oxide were mixed thoroughly and then melted at 1000°C for 30 minutes. At the same time, nitrogen gas was introduced to protect the atmosphere, so that the raw materials were melted into a liquid state, and then the glass The melt is quickly cast onto a stainless steel formwork that has been preheated to 180°C. After forming, it is kept at a temperature lower than the glass transition temperature of 30°C for 3 hours, and annealed at a rate of 8°C / min to room temperature to obtain a glass containing rare earth ions;

[0051] (2) According to the molar ratio of 70%Te+10%Zn+10%Pb+10%B (doped with 0.7% Au outside), the glassy film containing nano-gold particles is weighed. Raw materials: tellurium oxide, zinc...

Embodiment 3

[0055] (1) According to the molar ratio of 32%Bi+15%Zr+20%Ga+13%Na+10%Nd+10%Sm glass components containing rare earth ions, weigh the raw materials of each component: bismuth bromide, oxide Zirconium, gallium oxide, sodium oxide, neodymium oxide, and samarium oxide are mixed thoroughly and then melted at 1100°C for 30 minutes. At the same time, nitrogen gas is introduced to protect the atmosphere, so that the raw materials are melted into a liquid state, and then the molten glass is quickly cast to the Preheat to 260°C stainless steel formwork, after molding, keep it at 40°C below the glass transition temperature for 3 hours, and anneal at a rate of 10°C / min to room temperature to obtain glass containing rare earth ions;

[0056] (2) According to the molar ratio of 40%Bi+27%Zr+20%Ga+13%Na (doped with 3%Au) glassy thin film containing nano-gold particles, weighing raw materials: bismuth nitrate, zirconium n-butoxide, Gallium nitrate, sodium nitrate, gold chloride, zirconium n-b...

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Abstract

The invention provides a nano-gold modified rare earth-doped frequency conversion luminescent material and a preparation method thereof. The nano-gold modified rare earth-doped modified frequency conversion luminescent material is composed of glass containing rare earth ions and a glassy film containing gold nanoparticles, wherein the glassy film containing the gold nanoparticles is uniformly coated on the surface of the glass containing the rare earth ions. The nano-gold 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 gold nanoparticles; and coating the glassy film containing the gold 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 gold nanoparticles. The luminous efficiency can be enhanced by as high as 10 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-gold 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 earth...

Claims

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Application Information

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