Red light-fluorescent light conversion material for plant lamp and preparation method of conversion material

A technology of conversion material and red light fluorescence, which is applied in the field of red light fluorescence conversion materials for plant lamps and its preparation, can solve the problem of low pigment absorption rate, and achieve the effect of convenient use and easy operation and control

Inactive Publication Date: 2015-11-18
KUSN KAIWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 520-610nm (green): the absorption rate of the pigment is not high

Method used

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  • Red light-fluorescent light conversion material for plant lamp and preparation method of conversion material
  • Red light-fluorescent light conversion material for plant lamp and preparation method of conversion material
  • Red light-fluorescent light conversion material for plant lamp and preparation method of conversion material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: Cr: The preparation method of YAG powder conversion material

[0051] 1) Press Y 3 (Al 0.95 Cr 0.05 ) 5 o 12 Weigh each raw material, mix Cr:YAG powder conversion material, and add a small amount of BaF 2 As a flux, mix the raw materials evenly to obtain the mixed raw materials, and put them into the crucible;

[0052] 2) Burn the mixed raw materials at about 1600°C in an inert atmosphere for 5 hours, and then lower the temperature at a rate of 50°C per hour;

[0053] 3) Take out the powder, pulverize, wash and dry to obtain Cr:YAG powder conversion material, and then test the obtained YAG 3 (Al 0.95 Cr 0.05 ) 5 o 12 The spectrum of the powder sample under the excitation of blue light with a wavelength of 450 nm, the results are as follows figure 1 As shown in the figure, it can be seen from the figure that under the excitation of blue light, Cr:YAG powder has a strong broadband luminescence peak in the red light and near-infrared light bands of...

Embodiment 2

[0054] Embodiment 2: Cr: The preparation method of YAG crystal conversion material

[0055] 1) Press Y 3 (Al 0.98 Cr 0.02 ) 5 o 12 Weigh each raw material, mix Cr:YAG crystal powder, and then mix the weighed raw materials evenly to obtain mixed raw materials, and press them into cakes;

[0056]2) Fire the cake-shaped mixed raw materials at 1200°C under air for 20 hours;

[0057] 3) Finally, use the pulling method to heat to 1970°C in an inert atmosphere to melt the raw material, and then raise the temperature to 30°C on this basis, keep the melt at a constant temperature for 5 hours in an overheated state, and then start to grow, with a growth rate of 1.2mm / h , the speed is 10r / h.

[0058] 4) After the growth is completed, the temperature is lowered at a rate of 30° C. / h to obtain a crystal conversion material.

[0059] After the obtained crystal conversion material was cut, ground and polished, it was uniformly processed into a thickness of 0.3 mm, and then its lumines...

Embodiment 3

[0060] Embodiment 3: Cr: The preparation method of YAG crystal conversion material

[0061] 1) Press Y 3 (Al 0.999 Cr 0.001 ) 5 o 12 Weigh each raw material, mix Cr:YAG crystal powder, and then mix the weighed raw materials evenly to obtain mixed raw materials, and press them into cakes;

[0062] 2) Fire the cake-shaped mixed raw materials at 1300°C under air for 15 hours;

[0063] 3) Finally, use the pulling method to heat to 1970°C in an inert atmosphere to melt the raw material, and then raise the temperature to 30°C on this basis, keep the melt at a constant temperature for 5 hours in an overheated state, and then start to grow, with a growth rate of 0.8mm / h , the speed is 20r / h.

[0064] 4) After the growth is completed, the temperature is lowered at a rate of 40° C. / h to obtain a crystal conversion material.

[0065] After the obtained crystal conversion material was cut, ground and polished, it was uniformly processed into a thickness of 0.3 mm, and then its lumi...

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Abstract

The invention discloses a red light-fluorescent light conversion material for a plant lamp and a preparation method of the conversion material. The conversion material adopts the formula of (Y1-xAx)3(Al1-y-mCrmBy)5O12, wherein x is larger than or equal to 0 and smaller than or equal to 1; y is larger than or equal to 0 and smaller than or equal to 1; m is larger than or equal to 0 and smaller than or equal to 0.05; A is one or Lu, Tb, Pr, La, Gd and Ce; B is one or Ga, Ti, Mn and Zr. The conversion material adopts a proper blue LED chip and a light conversion material, so as to enhance the luminous intensity of the lamp in a targeted manner at the wave bands of 400 to 520 nm (blue) and 610 to 720 nm (red), and directly form a luminescent source meeting the requirement of plant growth; moreover, the luminescent spectrum can be adjusted by adjusting the performance or size proportion of the light conversion material, so as to be convenient to use and easy to operate and control.

Description

technical field [0001] The invention relates to a conversion material and a preparation method thereof, in particular to a red light fluorescence conversion material for plant lamps and a preparation method thereof. Background technique [0002] With the gradual development of modern agriculture in China, plant lighting has received more and more attention from the planting industry. At present, the light sources suitable for plant lighting mainly include: high-pressure sodium lamps, metal halide lamps, ceramic metal halide lamps, microwave sulfur lamps, plasma lamps, fluorescent lamps, electrodeless lamps, trichromatic rare earth fill lights, LED plant lights, etc. Considering the cost and use effect, the most commonly used ones are sodium lamps, metal halide lamps and LED plant lamps. [0003] Sodium lamps and metal halide lamps are relatively traditional complementary color lighting lamps, but their luminous efficiency is relatively low and energy consumption is large. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80C30B29/28
Inventor 曹顿华梁月山董永军
Owner KUSN KAIWEI ELECTRONICS
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