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Efficient ultraviolet and blue up-conversion luminous transparent glass ceramic and preparation thereof

A technology of transparent glass and glass ceramics, which is applied in the field of solid luminescent materials, can solve the problems of limited fraction and affecting the conversion performance of materials, and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2009-03-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the replacement of divalent calcium ions by trivalent rare earth ions requires charge compensation, the fraction of rare earths entering the crystal phase of calcium fluoride is limited, which affects the improvement of the upconversion performance of the material.

Method used

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  • Efficient ultraviolet and blue up-conversion luminous transparent glass ceramic and preparation thereof

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Experimental program
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Effect test

example 1

[0009] Example 1: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 and TmF with a purity of 99.99% 3 and YbF 3 Powder, according to 0.1TmF 3 : 0.2YbF 3 :44SiO2 2 : 28Al 2 o 3 :10.7NaF:17YF 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1400°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 0.5 hours , and then, quickly pour the glass melt into a preheated copper mold at 300°C for forming; put the obtained precursor glass into a resistance furnace, anneal at 500°C for 2 hours and then cool with the furnace to eliminate internal stress; the annealed The glass was kept at 670°C for 2 hours to obtain a colorless transparent glass-ceramic. Transmission electron microscopy (TEM) studies have shown that there are a large number of YF with a size of 20-30nm in the glass ceramics 3 The crystal grains are evenly dis...

example 2

[0010] Example 2: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 and YbF with a purity of 99.99% 3 and TmF 3 Powder, according to 0.1TmF 3 : 0.5YbF 3 :44SiO2 2 : 28Al 2 o 3 : 10.4NaF : 17YF 3 The proportioning of (molar ratio) is weighed accurately, after preparation and heat treatment process identical with example 1, obtain colorless transparent glass-ceramics. The surface of the sample was polished, and the room temperature upconversion emission spectrum was measured with a FLS920 fluorescence spectrometer under the condition of 976 nm laser excitation, and strong ultraviolet and blue luminescence were observed.

example 3

[0011] Example 3: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 and NdF with a purity of 99.99% 3 , YbF 3 and TmF 3 Powder, according to 0.1TmF 3 : 0.1NdF 3 : 0.2YbF 3 :44SiO2 2 : 28Al 2 o 3 : 10.6NaF : 17YF 3 The proportioning of (molar ratio) is weighed accurately, after preparation and heat treatment process identical with example 1, obtain light blue transparent glass-ceramic. The surface of the sample was polished, and the room temperature up-conversion emission spectrum was measured with a FLS920 fluorescence spectrometer under the condition of 796 nm laser excitation, and ultraviolet and blue luminescence were observed.

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Abstract

The invention discloses a transparent glass ceramic which has high efficient conversion luminescence on ultraviolet lights and blue lights, and relates to the field of luminescent materials. The chemical constituents of the glass ceramic have the following molar ratio: 44SiO2-28Al2O3-17YF3-xNaF-0.1TmF3-yNdF3-zYbF3, wherein, y is equal to 0-0.5, z is equal to 0-1.0, and x is equal to (11-y-z). The transparent glass ceramic is prepared by adopting the fuse-quench process. The material has high efficient conversion luminescence performance on the ultraviolet lights and the blue lights.

Description

technical field [0001] The invention relates to the field of solid luminescent materials, in particular to a rare earth-doped transparent glass ceramic capable of realizing high-efficiency ultraviolet and blue up-conversion luminescence and a preparation process thereof. Background technique [0002] In recent years, short-wavelength solid-state lasers have attracted extensive attention from materials scientists due to their important application prospects in high-density optical data storage, optical displays, and infrared sensors. At present, the existing laser wavelengths are mainly in the visible and infrared bands, but it is difficult to achieve laser emission in the ultraviolet and vacuum ultraviolet bands, which restricts the further development and application of lasers. In order to solve this problem, in addition to using frequency doubling technology to convert long-wavelength lasers into short-wavelength lasers, in recent years, people have also used the anti-Stok...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C3/112C03C4/12C03B32/02
Inventor 陈大钦王元生余运龙
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI