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Fluorescent glass-ceramic for plant laser lighting and preparation method thereof

A technology of laser lighting and glass-ceramic, applied in the field of solid luminescent materials, can solve the problems of deterioration of organic materials, poor thermal stability and chemical stability, etc., and achieve the effects of good thermal stability, low cost and simple preparation process

Active Publication Date: 2017-01-11
深圳惠农智光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic substances usually have the disadvantages of poor thermal stability and chemical stability, especially under high-energy-density laser irradiation, organic materials are severely degraded

Method used

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  • Fluorescent glass-ceramic for plant laser lighting and preparation method thereof
  • Fluorescent glass-ceramic for plant laser lighting and preparation method thereof
  • Fluorescent glass-ceramic for plant laser lighting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A fluorescent glass-ceramic for plant laser lighting, which is composed of a glass matrix and a red phosphor, wherein the content of the red phosphor is 10wt%, and the glass matrix is ​​90wt%; the composition of the glass matrix is: 10wt% SiO 2 , 10wt% La 2 o 3 , 80 wt% B 2 o 3 ; The red phosphor is CaAlSiN 3 : Eu 2+ , which emits 660nm broad-spectrum deep red light under the excitation of a blue laser light source, with a full width at half maximum of 80nm; the red phosphor crystal grains are evenly embedded in the glass matrix.

[0025] The preparation method of the fluorescent glass-ceramics for plant laser lighting, the steps are as follows:

[0026] 1) put B 2 o 3 , SiO 2 , La 2 o 3 Add the powder into the crucible according to the proportion, put it into the resistance furnace and heat it to 1300°C, then keep it warm for 120 minutes until it is completely melted, quickly pour the molten glass at 1000°C and press it into a glass sheet, and anneal the glas...

Embodiment 2

[0030] A fluorescent glass-ceramic for plant laser lighting, which is composed of a glass matrix and a red phosphor, wherein the content of the red phosphor is 20wt%, and the glass matrix is ​​80wt%; the composition of the glass matrix is: 20wt% SiO 2 , 10wt% La 2 o 3 , 70 wt% B 2 o 3 ; The red phosphor is CaAlSiN 3 : Eu 2+ , which emits 660nm broad-spectrum deep red light under the excitation of a blue laser light source, with a full width at half maximum of 80nm; the red phosphor crystal grains are evenly embedded in the glass matrix.

[0031] The preparation method of the fluorescent glass-ceramics for plant laser lighting, the steps are as follows:

[0032] 1) put B 2 o 3 , SiO 2 , La 2 o 3 Add the powder into the crucible in proportion, put it into a resistance furnace and heat it to 1100°C, and then keep it warm for 60 minutes until it is completely melted. At 900°C, pour the molten glass into clean water and quench it into glass particles. Annealing at 600°C ...

Embodiment 3

[0036] A fluorescent glass-ceramic for plant laser lighting, which is composed of a glass matrix and a red phosphor, wherein the content of the red phosphor is 15wt%, and the glass matrix is ​​85wt%; the composition of the glass matrix is: 15wt% SiO 2 , 5wt% La 2 o 3 , 80 wt% B 2 o 3 ; The red phosphor is CaAlSiN 3 : Eu 2+ , which emits 660nm broad-spectrum deep red light under the excitation of a blue laser light source, with a full width at half maximum of 80nm; the red phosphor crystal grains are evenly embedded in the glass matrix.

[0037] The preparation method of the fluorescent glass-ceramics for plant laser lighting, the steps are as follows:

[0038] 1) put B 2 o 3 , SiO 2 , La 2 o 3 Add the powder into the crucible according to the proportion, put it into the resistance furnace and heat it to 1300°C, then keep it warm for 60 minutes until it is completely melted, quickly pour the molten glass at 1000°C and press it into a glass sheet, and anneal the glass ...

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Abstract

Plant laser lighting fluorescent glass-ceramics is composed of 5-30wt% of red fluorescent powder and the balance of a glass matrix; the red fluorescent powder emits 660nm wide spectrum deep red light under excitation of a blue laser light source, the full width at half maximum is wider than 60nm; and red fluorescent powder crystalline grains are uniformly embedded in the glass matrix. The advantages of the plant laser lighting fluorescent glass-ceramics are that: the fluorescent glass-ceramics emits high brightness 660nm wide spectrum red light under excitation of a blue semiconductor laser, partly-transmitted-out blue laser and the red light emitted by the fluorescent glass-ceramics are matched with effective spectrum of plant photosynthesis, at the same time, the plant laser lighting fluorescent glass-ceramics can obtain a high brightness plant laser lighting source under excitation of high energy density laser, and has potential application in the fields such as a plant factory, vertical planting, a greenhouse, a glass cultivation room, and the like.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of solid luminescent materials, in particular to a fluorescent glass-ceramic for plant laser lighting and a preparation method thereof. [0003] 【Background technique】 [0004] Plants are not as sensitive to the light spectrum as the human eye. The most sensitive spectrum of the human eye is 555nm, between yellow-green light. Sensitivity to blue and red light areas is poor. Plants, on the other hand, are most sensitive to the red and blue light spectrum. The blue light and red light in the solar spectrum have the greatest impact on the photosynthesis of plants, commonly known as the photosynthetic active spectrum. [0005] Therefore, as an artificial supplementary light source for plant growth, the spectral distribution of the light source should also be close to this range. Traditional supplementary light sources such as incandescent lamps and fluorescent lamps have the disadvantages of spectral mismatch ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02C03C4/12
CPCC03C4/12C03C10/00
Inventor 王达健李广浩毛智勇宋维伟孙涛卢志娟
Owner 深圳惠农智光科技有限公司
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