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Red-blue-light glass ceramic light conversion component, preparation method and plant growth lamp

A glass ceramic, red and blue light technology, applied in the field of plant lamps, can solve problems such as affecting the quality of light sources, luminous intensity, aging of packaging materials, etc.

Active Publication Date: 2019-04-16
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In terms of light intensity, the current red and blue composite LED light source needs to mix phosphor powder with epoxy resin (or silicone resin) and other packaging materials before packaging it on the LED chip. As the lighting time prolongs, the heat generated by the chip will decrease. Aging of the packaging material will affect the quality and luminous intensity of the overall light source. This phenomenon is more obvious in high-power LED or laser lighting

Method used

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  • Red-blue-light glass ceramic light conversion component, preparation method and plant growth lamp
  • Red-blue-light glass ceramic light conversion component, preparation method and plant growth lamp
  • Red-blue-light glass ceramic light conversion component, preparation method and plant growth lamp

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Experimental program
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Effect test

Embodiment 1

[0076] Blue phosphor BaMgAl 10 o 17 :Eu 2+ Preparation: According to the substance mass ratio of each element in the molecular formula of the fluorescent powder, weigh barium carbonate powder, magnesium oxide powder, aluminum oxide powder and europium oxide powder, mix the above-mentioned raw materials after weighing, place at high temperature The temperature of the tube furnace was raised to 800°C and kept for 1 hour. After natural cooling, it was taken out, and then placed in a high-temperature tube furnace with a flow rate of 80 mL / min mixed gas (the molar ratio of hydrogen to nitrogen was 5:95) and heated to 1575°C and keep it warm for 8 hours, take it out after natural cooling, and then crush it to get the blue phosphor BaMgAl 10 o 17 :Eu 2+ .

Embodiment 2

[0078] Blue phosphor CaF 2 :Eu 2+ Preparation: According to the substance mass ratio of each element in the phosphor molecular formula, weigh calcium difluoride powder and europium trioxide powder, mix the above-mentioned raw materials after weighing, place in a mixed gas flow rate of 80mL / min (The molar ratio of hydrogen to nitrogen is 5:95) high-temperature tube furnace is heated to 800°C and kept for 4 hours, then taken out after natural cooling, and then crushed to obtain the blue phosphor CaF 2 :Eu 2+ .

Embodiment 3

[0080] Blue phosphor CaAl 2 o 4 :Eu 2+ Preparation: According to the mass ratio of each element in the phosphor molecular formula, weigh calcium carbonate, aluminum oxide and europium oxide powder, mix the above-mentioned raw materials evenly after weighing, and place the flow rate at 80mL / min A high-temperature tube furnace with mixed gas (the molar ratio of hydrogen to nitrogen is 5:95) is heated to 1300°C and kept for 4 hours, taken out after natural cooling, and then crushed to obtain the blue phosphor CaAl 2 o 4 :Eu 2+ .

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Abstract

The invention relates to a red-blue-light glass ceramic light conversion component. The component comprises a first blue fluorescent glass ceramic body and a second red fluorescent glass ceramic body,wherein the first blue fluorescent glass ceramic body is formed in the way that blue fluorescent powder and phosphate glass powder are mutually mixed and subjected to melting and solidification; theblue fluorescent powder is selected from one or more of a fluorescent material with a molecular formula of BaMgAl<10>O<17>:Eu<2+>, a fluorescent material with a molecular formula of CaF<2>:Eu<2+> anda fluorescent material with a molecular formula of CaAl<2>O<4>:Eu<2+>; the second red fluorescent ceramic body is formed in the way that red fluorescent powder and phosphate glass powder are mutuallymixed and subjected to melting and solidification; the red fluorescent powder is selected from one or more of a fluorescent material with a molecular formula of CaAlSiN<3>:Eu<2+>, a fluorescent material with a molecular formula of Y<3>Al<5>O<12>:Mn<4+> and a fluorescent material with a molecular formula of 3.5MgO.0.5MgF<2>.GeO<2>:Mn<4+>; and the first blue fluorescent glass ceramic body and the second red fluorescent glass ceramic body are mutually spliced to form the red-blue-light glass ceramic light conversion component. The red-blue-light glass ceramic light conversion component can adaptto a near-ultraviolet LED chip to emit blue light with wavelength ranging from 400nm to 500nm and red light with wavelength ranging from 580nm to 780nm; and the peak width at half height of a spectrumof the blue light is up to 50nm, so that the requirement of plant growth is better met, light emitting efficiency is higher, and light quality is easier to adjust.

Description

technical field [0001] The invention relates to the technical field of plant growth equipment, in particular to a red and blue light glass ceramic light conversion component, a preparation method and a plant lamp comprising the glass ceramic light conversion component. Background technique [0002] For a long time, artificial plant light sources have played a vital role in the development of plant factories, and the two most important factors affecting plant growth are the light quality and light intensity of the light source. [0003] In particular, in terms of light quality, in order to match the absorption range of plant photosynthesis, red and blue composite LED light sources are the focus of research. The red and blue composite LED light source can not only be made by combining red and blue LED chips, but also can be made by packaging a light-transmitting component containing red phosphor powder outside the blue LED chip. In order to meet the needs of plant photosynthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/58A01G7/04
CPCA01G7/045H01L33/504H01L33/505H01L33/58H01L2933/0041H01L2933/0058Y02P60/14
Inventor 雷炳富李明才张浩然刘应亮张学杰
Owner SOUTH CHINA AGRI UNIV
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