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

A rare earth doping and frequency conversion technology, 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 the like, and achieve high frequency conversion luminous efficiency, good Optical properties and thermal stability properties, the effect of simple and easy methods

Inactive Publication Date: 2016-02-24
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) According to the molar ratio of 55%Te+12%Al+20%Ba+3%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 mixed thoroughly and melted at 950°C for 20 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 molten glass is quickly cast until it has been preheated to 200°C. On the stainless steel template, after forming, keep it at a temperature lower than the glass transition temperature of 40 °C for 4 hours, and anneal at a speed of 10 °C / min to room temperature, that is, the glass containing rare earth ions is obtained;

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

Embodiment 2

[0050] (1) According to the molar ratio of 35%Te+15%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 900°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 65%Te+15%Zn+10%Pb+10%B (doped with 0.8%Ag) glassy film containing nano-silver particles and weighing raw materials: tellurium oxide, zinc nitrate, le...

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 were mixed thoroughly and then melted at 1100°C for 40 minutes. At the same time, nitrogen gas was introduced for atmosphere protection to melt the raw materials into a liquid state, and then the molten glass was quickly cast to the Preheat to 260°C stainless steel formwork, after forming, keep it at 50°C lower than the glass transition temperature for 4 hours, and anneal at a speed of 5°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 (externally doped with 3%Ag) vitreous thin film containing nano-silver particles, weighing raw materials: bismuth nitrate, zirconium n-butoxide, Gallium nitrate, sodium nitrate, silver zirconate,...

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Abstract

The invention provides a nano-silver modified rare earth-doped luminescent material for frequency conversion and a preparation method thereof, which is composed of glass containing rare earth ions and a vitreous film containing nano-silver particles, and the vitreous film containing nano-silver particles is uniformly coated on on glass surfaces containing rare earth ions. First prepare the glass containing rare earth ions, then prepare the vitreous film containing nano-silver particles, and then coat the vitreous film containing nano-silver particles on the surface of the glass containing rare earth ions by rotating speed spin coating or dipping and pulling , to obtain nano-silver modified rare-earth-doped luminescent material for frequency conversion. The obtained composite luminescent material has good optical properties and thermal stability. The present invention realizes high frequency conversion luminous efficiency by utilizing the local field enhancement effect of nano-silver particles through excitation light irradiation, and its luminous efficiency can be enhanced up to 15 times. The problem of low luminous efficiency of the frequency conversion glass material is effectively made up for.

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 Patents(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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