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Full-spectrum fluorescent ceramic for laser illumination, and preparation method thereof

A technology of fluorescent ceramics and laser lighting, applied in the field of full-spectrum fluorescent ceramics and preparation of laser lighting, can solve problems such as low color rendering index, and achieve the effect of solving the lack of red light and green light components with poor color rendering index

Pending Publication Date: 2020-06-16
SHANGHAI AVIATION ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectrum of fluorescent materials used in laser lighting is mostly broad, and its color rendering index is low (about 55), especially the red light component is missing, and R9 is a negative number.

Method used

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  • Full-spectrum fluorescent ceramic for laser illumination, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, the doping concentration of luminescent ions is selected as 0.5%, the green light component is Ce:LuAG, the yellow light component is Ce:YAG, and the red light component is Eu:SiAlON. According to the mass ratio of green light: yellow light: red light component is 1:2:2, the ingredients are accurately calculated according to the specified ratio. The prepared powder was milled in a ball mill tank for 6 hours at a milling speed of 300 r / min, the milling medium was alumina balls with a diameter of 2 mm, and absolute ethanol was used as a solvent. After ball milling, dry the milled slurry, pass through a 100-mesh sieve to obtain a mixture powder, then weigh a certain amount of the mixture powder and place it in a mold for molding, pressurize the mold in both directions, and the molding pressure is 2MPa. Then vacuum pack the biscuit through a vacuum laminating machine. Put the sealed biscuit into a cold isostatic pressing machine for cold isostatic press...

Embodiment 2

[0031] In this embodiment, the doping concentration of luminescent ions is selected as 0.8%, the green light component is Ce:LuAG, the yellow light component is Ce:GYGAG, and the red light component is Er:YAG. According to the mass ratio of green light: yellow light: red light component is 1:3:2, the ingredients are accurately calculated according to the specified ratio. Put the prepared powder in a ball mill tank for 12 hours, the ball milling speed is 250r / min, the ball milling medium is alumina balls, the diameter of the alumina balls is 2mm, and absolute ethanol is used as the solvent. After ball milling, dry the milled slurry, pass through a 100-mesh sieve to obtain the mixture powder, and then place it in a high-purity alumina crucible and put it in a high-temperature muffle furnace for calcination at a sintering temperature of 1000°C for 6 hours. Then weigh a certain amount of mixed powder and place it in a mold for molding, pressurize the mold in both directions, and t...

Embodiment 3

[0033] In this embodiment, the doping concentration of luminescent ions is selected as 0.3%. The green light component is Ce:LuAG, the yellow light component is Ce:GYAG, and the red light component is Eu:SiAlON. According to the mass ratio of green light: yellow light: red light component is 2:2:1, the ingredients are accurately calculated according to the specified ratio. The prepared powder was milled in a ball mill tank for 20 hours at a milling speed of 150 r / min, the milling medium was alumina balls with a diameter of 5 mm, and absolute ethanol was used as a solvent. After ball milling, dry the milled slurry, pass through a 100-mesh sieve to obtain a mixture powder, then weigh a certain amount of the mixture powder and place it in a mold for molding, pressurize the mold in both directions, and the molding pressure is 2MPa. Then vacuum pack the biscuit through a vacuum laminating machine. Put the sealed biscuit into a cold isostatic pressing machine for cold isostatic pr...

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Abstract

The invention discloses a full-spectrum fluorescent ceramic for laser illumination, and a preparation method thereof, wherein the full-spectrum fluorescent ceramic is composed of a green light emitting ceramic component, a yellow light emitting ceramic component and a red light emitting ceramic component, and the spectral range of the full-spectrum fluorescent ceramic is 500-650 nm. The full-spectrum fluorescent ceramic has the beneficial effects that the spectrum from green light to red light is complete, and the phenomena of poor color rendering index, lack of red light and green light components are effectively solved.

Description

technical field [0001] The invention relates to the field of fluorescent materials for laser lighting, in particular, full-spectrum fluorescent ceramics for laser lighting and a preparation method thereof. Background technique [0002] As the technology of Blu-ray LD matures, the concept of laser lighting is also proposed. In 2012, OSRAM and BMW first successfully installed laser lighting lamps in the BMW i8 car. Everyone's enthusiasm for laser lighting research has also increased. Compared with traditional LED lighting, laser lighting has the advantages of high luminous efficiency, compact structure, and long irradiation distance. However, most of the fluorescent materials used in laser lighting have a broad spectrum at present, and their color rendering index is low (about 55), especially the red light component is missing, and R9 is a negative number. Contents of the invention [0003] People have always expected to solve the low color index (about 55) of laser lighti...

Claims

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Application Information

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IPC IPC(8): C04B35/50C04B35/622C04B35/626C04B35/645C09K11/77
CPCC04B35/50C04B35/622C04B35/62605C04B35/645C09K11/7792C09K11/7783C04B2235/3217C04B2235/3418C04B2235/3225C04B2235/3229C04B2235/602C04B2235/6567C04B2235/662
Inventor 叶勇王红张攀德李东升冯少尉李春晖朱锦超
Owner SHANGHAI AVIATION ELECTRIC