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Fluorescent glass ceramic, preparation method of fluorescent glass ceramic and application of fluorescent glass ceramic in preparing laser light source

A fluorescent glass, laser light source technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor heat dissipation performance of high-power light source packaging, achieve the effect of not affecting luminous performance, solving material deterioration, and improving luminous power

Inactive Publication Date: 2015-12-16
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, realize high-brightness projection display, and solve the problems of poor heat dissipation performance of high-power light source packages, the present invention provides a fluorescent glass ceramic and its preparation method and its application in the preparation of laser light sources. Combining green fluorescent powder and glass powder, the prepared fluorescent glass ceramics have good thermal stability and can operate at high temperatures for a long time

Method used

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  • Fluorescent glass ceramic, preparation method of fluorescent glass ceramic and application of fluorescent glass ceramic in preparing laser light source
  • Fluorescent glass ceramic, preparation method of fluorescent glass ceramic and application of fluorescent glass ceramic in preparing laser light source
  • Fluorescent glass ceramic, preparation method of fluorescent glass ceramic and application of fluorescent glass ceramic in preparing laser light source

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Embodiment 1

[0031] A fluorescent glass-ceramic made of 95wt% SiO 2 -BaO-ZnO-B 2 o 3 -Al 2 o 3 Low melting point glass powder with 5wt% Si 5.5 al 0.5 o 0.5 N 7.5 :Eu 2+ Composition of green fluorescent powder.

[0032] 1) Accurately weigh α-Si according to the proportion 3 N 4 ,AlN,Al 2 o 3 and Eu 2 o 3 The raw materials are put into a crucible after being mixed evenly, and moved to a high-temperature carbon tube furnace filled with nitrogen reducing gas, and the pressure in the furnace is 1.0Mpa. After the temperature is raised to 2000°C, the holding time is set to 3h. After the temperature in the furnace is cooled to room temperature 25°C, the sample is taken out for grinding and sieving to obtain high-purity Si 5.5 al 0.5 o 0.5 N 7.5 :Eu 2+ Green phosphor.

[0033] 2) Accurately weigh 40% SiO according to the molar ratio 2 , 30% BaO, 20% ZnO, 5% B 2 o 3 , 5% Al 2 o 3 After mixing evenly in an agate mortar, move it into a crucible, place it in a high-temperature ...

Embodiment 2

[0039] A fluorescent glass-ceramic made of 95wt% CaO-MgO-SiO 2 Glass powder with 5wt% Si 5.5 al 0.5 o 0.5 N 7.5 :Eu 2+ Composition of green fluorescent powder.

[0040] 1) Accurately weigh α-Si according to the proportion 3 N 4 ,AlN,Al 2 o 3 and Eu 2 o 3 The raw materials are put into a crucible after being mixed evenly, and moved to a high-temperature carbon tube furnace filled with nitrogen reducing gas, and the pressure in the furnace is 1.0Mpa. After the temperature is raised to 2000°C, the holding time is set to 3h. After the temperature in the furnace is cooled to room temperature 25°C, the sample is taken out for grinding and sieving to obtain high-purity Si 5.5 al 0.5 o 0.5 N 7.5 :Eu 2+ Green phosphor.

[0041] 2) Accurately weigh 30% CaO, 30% MgO, 40% SiO according to the molar ratio 2 After mixing evenly in an agate mortar, move it into a crucible, place it in a high-temperature carbon tube furnace filled with nitrogen reducing gas, raise the tempera...

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Abstract

The invention discloses fluorescent glass ceramic, a preparation method of the fluorescent glass ceramic and application of the fluorescent glass ceramic in preparing a laser light source. The preparation method includes the steps that alpha-Si3N4, AlN, Al2O3 and Eu2O3 are subjected to heat preservation for 1-5 h at the temperature of 1500-2400 DEG C and the pressure intensity of 0.6-1.4 Mpa, the product is ground and sieved after being cooled, and Eu-doped Si-Al-O-N green fluorescent powder is obtained; the Eu-doped Si-Al-O-N green fluorescent powder and glass powder are subjected to heat preservation for 45-120 min at temperature of 450-700 DEG C after being mixed, and the fluorescent glass ceramic is obtained. The prepared green fluorescent powder is excellent in luminescence performance, the fluorescent glass ceramic prepared from the fluorescent glass ceramic compounded with the low-melting-point glass powder is excellent in heat stability, capable of being used for preparing the laser light source and resistant to blue light, the luminescence performance is not influenced, and the phenomenon of material deterioration or color changing will not occur in long-time high-temperature operation.

Description

technical field [0001] The invention relates to the technical field of packaging materials for laser light sources, in particular to a fluorescent glass ceramic, a preparation method thereof, and an application in the preparation of laser light sources. Background technique [0002] With the continuous improvement of display and light source technology, projection display technology has been widely used in entertainment, education, medical and other fields, and has made the display industry rise rapidly and become one of the important electronic information industries. Among them, the projection display technology refers to the technology of using the red, green and blue primary colors emitted by the light source to form images, and then displaying images on the projection screen after the amplification process of the optical system. Therefore, in order to improve the projection quality, it is necessary to find a suitable projection light source. The light source currently ...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C4/12C09K11/64
Inventor 王乐罗东潘桦滟陈如标吴拓李旸晖
Owner CHINA JILIANG UNIV
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