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Up-conversion luminescence transparent glass ceramics and preparation method thereof

A transparent glass and ceramic technology, applied in the field of preparation of up-conversion luminescent transparent glass ceramics, can solve the problems of precise control of composition, insufficient doping uniformity, uncontrollable enrichment of doping ions, etc., and achieve low production cost, high fluorescence The effect of strong strength and simple process

Active Publication Date: 2012-06-20
FUJIAN CAS CERAMIC OPTOELECTRONICS TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing methods all use heat treatment to generate nanocrystals in situ, and the process of enriching dopant ions in nanocrystals cannot be controlled. The precise control of its composition and the uniformity of doping are insufficient.

Method used

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  • Up-conversion luminescence transparent glass ceramics and preparation method thereof
  • Up-conversion luminescence transparent glass ceramics and preparation method thereof

Examples

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Effect test

example 1

[0012] Example 1: Analytical pure Al 2 o 3 、Na 2 CO 3 、H 3 BO 3 and prepared Gd 2 o 3 Nanocrystalline, by Al 2 o 3 :Na 2 CO 3 :H 3 BO 3 :Gd 2 o 3 = 4:4:20:1 (molar ratio) The ratio is accurately weighed and mixed, fully ground in an agate mortar to form a uniform powder, then placed in a platinum crucible, and heated to 1100°C in a programmable resistance furnace And keep it warm for 3 hours, then pour the molten liquid into a preheated copper mold to form; the obtained glass ceramics are put into a programmable resistance furnace and heated to 600°C and kept warm for 3 hours, and then you can get gadolinium oxide-doped transparent glass ceramics , the sample has been surface polished, and the red light upconversion luminescence signal can be observed by Horiba JY FL3 fluorescence spectrometer. The accompanying drawing is the fluorescence emission curve of the prepared glass ceramics, which shows that it is red up-conversion luminescence.

example 2

[0013] Example 2: Analytical pure Al 2 o 3 、Na 2 CO 3 、H 3 BO 3 and prepared Gd 2 o 3 Nanocrystalline, by Al 2 o 3 :Na 2 CO 3 :H 3 BO 3 :Gd 2 o 3 = 4:4:30:1 (molar ratio) The ratio is accurately weighed and mixed, fully ground in an agate mortar to form a mixed uniform powder, then placed in a platinum crucible, and heated to 1000 ° C in a programmable resistance furnace And keep it warm for 3 hours, then pour the molten liquid into a preheated copper mold to form; the obtained glass ceramics are put into a programmable resistance furnace and heated to 600°C and kept warm for 3 hours, and then you can get gadolinium oxide-doped transparent glass ceramics , the sample has been surface polished, and the up-converted red light signal can be observed when measured with a Horiba JY FL3 fluorescence spectrometer.

example 3

[0014] Example 3: Analytical pure Al 2 o 3 、Na 2 CO 3 、H 3 BO 3 and prepared Gd 2 o 3 Nanocrystalline, by Al 2 o 3 :Na 2 CO 3 :H 3 BO 3 :Gd 2 o 3 = 4:8:20:1 (molar ratio) The ratio is accurately weighed and mixed, fully ground in an agate mortar to form a uniform powder, then placed in a platinum crucible, and heated to 1200 ° C in a programmable resistance furnace And keep it warm for 3 hours, then pour the molten liquid into a preheated copper mold to form; the obtained glass ceramics are put into a programmable resistance furnace and heated to 600°C and kept warm for 3 hours, and then you can get gadolinium oxide-doped transparent glass ceramics , the sample has been surface polished, and the up-converted red light signal can be observed when measured with a Horiba JY FL3 fluorescence spectrometer.

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Abstract

The invention provides a method for preparing up-conversion luminescence transparent glass ceramics. The method comprises the following steps of: dispersing up-conversion luminescence doping gadolinium oxide nanocrystals in borate glass uniformly, batching, melting, forming, annealing and the like. The prepared up-conversion luminescence transparent glass ceramics have a simple process, and are low in production cost and high in luminous intensity.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and in particular relates to the preparation of up-conversion luminescent transparent glass ceramics. Background technique [0002] Rare earth oxide is a common phosphor matrix, among which gadolinium oxide has no energy-level absorption in the visible region, high refractive index, easy to achieve rare earth ion doping and other excellent properties, and is a widely used rare earth luminescent material matrix. Doped gadolinium oxide is also used in up-conversion luminescent materials. Because of its unique luminescent properties (short-wavelength light emitted under long-wavelength light excitation), it has been widely used in solid-state lasers, sensors, solar cells, and three-dimensional displays. However, the preparation process of single crystal materials or transparent ceramic materials is complicated and the cost is high, so the development of alternative materials has important practi...

Claims

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Application Information

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IPC IPC(8): C03C10/02
Inventor 周有福杨章富许文涛黄得财洪茂椿
Owner FUJIAN CAS CERAMIC OPTOELECTRONICS TECH CO LTD
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