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Preparation method of red-light-emitting glass

A technology that emits red light and glass, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of irregular particle shape and uneven particle size of phosphor powder, and achieve excellent thermal and chemical stability, color Pure, color stable effect

Active Publication Date: 2018-05-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phosphor particles prepared by the high-temperature solid-state method have irregular shapes and uneven particle sizes, which are not a small defect for LED phosphors.

Method used

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  • Preparation method of red-light-emitting glass
  • Preparation method of red-light-emitting glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) First, 13mol% of Tb will be 2 o 3 , 24mol% B 2 o 3 , 16mol% Ga 2 o 3 , 6.5mol% Eu 2 o 3 , 3mol% Y 2 o 3 , 15mol% GeO 2 , 22mol% SiO 2 , 0.2mol% SnO 2 , 0.3mol% ZnO 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 and red light glass.

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

Embodiment 2

[0029] 1) First, 13.2mol% of Tb will be 2 o 3 , 26mol% B 2 o 3 , 14mol% Ga 2 o 3 , 3mol% Eu 2 o 3 , 5mol% Y 2 o 3 , 17mol% GeO 2 , 20mol% SiO 2 , 0.2mol% Sb 2 o 3 , 1mol% SnO 2 , 0.6mol% ZnO 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 cool it down to room temperature at a cooling rate of 1°C / min to obtain a transparent and red light glass.

Embodiment 3

[0034] 1) First, 15mol% of Tb will be 2 o 3 , 22.1mol% B 2 o 3 , 12mol% Ga 2 o 3 , 5mol% Eu 2 o 3 , 7mol% Y 2 o 3 , 13mol% GeO 2 , 24mol% SiO 2 , 0.6mol% Sb 2 o 3 , 0.3mol% SnO 2 , 1mol% ZnO 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 and red light glass.

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Abstract

The invention discloses a preparation method of red-light-emitting glass. The preparation method comprises the following steps: firstly, uniformly mixing Tb2O3, B2O3, Ga2O3, Eu2O3, Y2O3, SiO2, GeO2 and Sb2O3 until the uniformity is greater than 98 percent, so as to obtain a mixed batch; then melting the mixed batch to obtain glass liquid; pouring the glass liquid into a graphite mold and shaping at 250 to 380 DEG C; then putting a product into a furnace at 710 DEG C and preserving heat for 3h; then cooling to room temperature to obtain transparent red-light-emitting glass. The red-light-emitting glass prepared by the technology has high light emitting strength, high brightness, low melting temperature, good glass formation performance, simple preparation technology, good thermal stabilityand good chemical stability. The rare-earth doped glass has good light transparency and great density and a melting technology is simple and is very suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a preparation method of luminous glass, in particular to a preparation method of colorless and transparent red luminous glass. 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, cathodolu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/068C03C4/12C03B5/16
CPCC03B5/16C03C3/068C03C4/12
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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