A kind of preparation method of yttrium-doped yellow-green glass

A yellow-green light and glass technology, applied in the field of preparation of yttrium-doped yellow-green light glass, can solve the problems of irregular particle morphology, thermal stability difference, wide particle size distribution, etc. Excellent glass performance and stable color

Active Publication Date: 2020-11-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these phosphor particles prepared by high-temperature solid-state method have irregular shape and wide particle size distribution, which is a big defect for LED phosphors.
In packaging applications, there will be powder mixing problems, there are differences in thermal stability between different phosphors, and problems such as reabsorption and light export.

Method used

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  • A kind of preparation method of yttrium-doped yellow-green glass
  • A kind of preparation method of yttrium-doped yellow-green glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) First, 18mol% of Tb will be 2 o 3 , 24mol% B 2 o 3 , 15mol% Ga 2 o 3 , 5.2mol% Y 2 o 3 , 15mol% GeO 2 , 22mol% SiO 2 , 0.3mol% SnO 2 , 0.5mol% ZrO 2 Mix until the uniformity is greater than 98% to form a batch;

[0023] 2) Then, add the batch material into the platinum crucible that has been heated to 1450°C; keep warm for 30 minutes;

[0024] 3) Then, cool down the furnace temperature to 1380°C for 30 minutes and keep it warm for 30 minutes;

[0025] 4) Finally, pour the molten glass into a graphite mold at 250°C, put it into a furnace at 710°C after setting the shape, keep it warm for 3 hours, and then cool it down to room temperature at a cooling rate of 1°C / min to obtain a transparent yellow-green light. Glass.

[0026] attached figure 1 It is the photoluminescence spectrum of the prepared colorless transparent yellow-green light-emitting glass at an excitation wavelength of 374nm, wherein the abscissa is the wavelength of emitted light, and the ord...

Embodiment 2

[0029]1) First, 21.85mol% of Tb will be 2 o 3 , 24mol% B 2 o 3 , 13mol% Ga 2 o 3 , 2mol% Y 2 o 3 , 17mol% GeO 2 , 20mol% SiO 2 , 0.5mol% Sb 2 o 3 , 1mol% SnO 2 , 0.65mol% ZrO 2 Mix until the uniformity is greater than 98% to form a batch;

[0030] 2) Then, add the batch material into the platinum crucible that has been heated to 1460°C; keep warm for 30 minutes;

[0031] 3) Then, cool down the furnace temperature to 1380°C for 30 minutes and keep it warm for 30 minutes;

[0032] 4) Finally, pour the molten glass into a graphite mold at 315°C, put it into a furnace at 710°C after setting the shape, keep it warm for 3 hours, and then cool it down to room temperature at a cooling rate of 1°C / min to obtain a transparent yellow-green light. Glass.

Embodiment 3

[0034] 1) First, 20mol% of Tb will be 2 o 3 , 22mol% B 2 o 3 , 11mol% Ga 2 o 3 , 6mol% Y 2 o 3 , 14.9 mol% GeO 2 , 24mol% SiO 2 , 0.6mol% Sb 2 o 3 , 0.5mol% SnO 2 , 1mol% ZrO 2 Mix until the uniformity is greater than 98% to form a batch;

[0035] 2) Then, add the batch material into the platinum crucible which has been heated to 1475°C; keep warm for 30 minutes;

[0036] 3) Then, cool down the furnace temperature to 1380°C for 30 minutes and keep it warm for 30 minutes;

[0037] 4) Finally, pour the molten glass into a graphite mold at 350°C, put it into a furnace at 710°C after setting the shape, keep it warm for 3 hours, and then cool it down to room temperature at a cooling rate of 1°C / min to obtain a transparent yellow-green light. Glass.

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Abstract

The invention discloses a yttrium-doped yellow-green light glass preparation method. The method comprises the following steps: mixing Tb2O3, B2O3, Ga2O3, Y2O3, SiO2, GeO2, Sb2O3, SnO2, and ZrO2 to uniformity being greater than 98% to form a batch mixture; then melting the batch mixture to obtain liquid glass, dumping the liquid glass in a graphite die for sizing at the temperature of 250-380 DEG C, placing the material in a furnace at the temperature of 710 DEG C for insulation for 3 h, and cooling the material to room temperature to obtain the yttrium-doped yellow-green light glass. The prepared yttrium-doped yellow-green light glass has the advantages of high luminescence intensity, high brightness, low melting temperature, good glass forming performance, simple preparation technology, and good heat stability and chemical stabilization. The prepared yttrium-doped yellow-green light glass has transparency of glass, high density, easy preparation, simple process, and low cost, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of yttrium-doped glass, in particular to a preparation method of yttrium-doped glass emitting yellow-green light. Background technique [0002] Photoluminescence refers to the phenomenon that an object relies on an external light source to irradiate, thereby obtaining energy, generating excitation and causing luminescence. When a substance is excited, the substance will be in an excited state, and the energy in the excited state will be released in the form of light or heat. If this part of the energy is electromagnetic radiation in the visible, ultraviolet or near infrared, the process is called luminescence. A substance that emits light after excitation is called a luminescent material. There are many kinds of luminescent materials, the principles of luminescence are different, and the characteristics of luminescence are also different. Luminescent materials mainly include photoluminescent materials, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/068C03C6/04C03C4/12C03B5/16
CPCC03B5/16C03C1/00C03C3/068C03C4/12
Inventor 殷海荣高杨王超郭宏伟李明阳杨晨
Owner SHAANXI UNIV OF SCI & TECH
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