Preparation method and application of fluorescent composite glass film

A composite glass and thin film technology, applied in the field of laser lighting, can solve the problems of low heat dissipation of fluorescent conversion materials and limit the application of fluorescent conversion materials, etc., and achieve the goals of improving laser saturation threshold and luminous flux, increasing scattering effect, good luminous performance and heat dissipation performance Effect

Pending Publication Date: 2022-08-02
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, fluorescent conversion materials used for laser lighting are usually placed on high thermal conductivity sapphire substrates to solve the problem of heat dissipation, but the heat dissipation of fluorescent conversion materials is still very low, which greatly limits the use of fluorescent conversion materials in ultra-high power laser Applications in the field of lighting

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  • Preparation method and application of fluorescent composite glass film
  • Preparation method and application of fluorescent composite glass film
  • Preparation method and application of fluorescent composite glass film

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A composite fluorescent glass material with high heat dissipation applied to laser lighting and a preparation method thereof, wherein the dominant wavelength range of a blue-light laser diode is between 460 and 480 nm.

[0035] Among them, the blue light transmission film can reflect yellow light with a wavelength of 520-800 nm, and transmit blue light with a wavelength of ≤ 510 nm, such as figure 2 shown.

[0036] The composite fluorescent glass film is composed of 30% La 3 Si 6 N 11 :Ce 3+ Phosphor, 20%K 2 O-Na 2 O-Al 2 O 3 -SiO 2 Glass powder, 25% Al 2 O 3 It is mixed with 25% BN. After mixing evenly, the organic slurry is added and mixed again to obtain a mixed slurry. The mixed slurry is coated on a sapphire substrate with a thickness of 50 μm, and placed on a constant temperature table of 100-110 °C for 10 minutes. After molding It is then placed in a muffle furnace and burned to 800° C. at 5° C. / min, and then naturally lowered to room temperature afte...

Embodiment 2

[0041] A composite fluorescent glass material with high heat dissipation applied to laser lighting and a preparation method thereof, wherein the dominant wavelength range of a blue-light laser diode is between 460 and 480 nm.

[0042] The composite fluorescent glass film is composed of 30% La 3 Si 6 N 11 :Ce 3+ Phosphor, 20%K 2 O-Na 2 O-Al 2 O 3 -SiO 2 Glass powder, 25% Al 2 O 3It is mixed with 25% AlN. After mixing evenly, the organic slurry is added and mixed again to obtain a mixed slurry. The mixed slurry is coated on the sapphire substrate with a thickness of 50 μm, and placed on a constant temperature table of 100 ~ 110 ℃ to cure for 10 minutes. After molding It is then placed in a muffle furnace and burned to 800° C. at 5° C. / min, and then naturally lowered to room temperature after being kept for 10 minutes to obtain a composite fluorescent glass film layer.

[0043] The luminescence performance data obtained by exciting the composite fluorescent glass thin f...

Embodiment 3

[0047] A composite fluorescent glass material with high heat dissipation applied to laser lighting and a preparation method thereof, wherein the dominant wavelength range of a blue-light laser diode is between 460 and 480 nm.

[0048] The composite fluorescent glass film is composed of 30% La 3 Si 6 N 11 :Ce 3+ Phosphor, 20%K 2 O-Na 2 O-Al 2 O 3 -SiO 2 Glass powder, 25% AlN and 25% BN are mixed. After mixing evenly, add organic slurry and mix again to obtain a mixed slurry. The mixed slurry is coated on a sapphire substrate with a thickness of 50 μm, and placed at a constant temperature of 100-110 °C The table is cured for 10 minutes, and then placed in a muffle furnace and fired to 800° C. at 5° C. / min. After being kept for 10 minutes, it is naturally lowered to room temperature to obtain a composite fluorescent glass film layer.

[0049] The luminescence performance data obtained by exciting the composite fluorescent glass thin film layer with different laser power b...

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Abstract

The invention discloses a preparation method and application of a fluorescent composite glass film. The fluorescent composite glass film comprises a blue laser diode, a composite fluorescent glass film, a blue light transmitting film, a sapphire substrate and a heat dissipation plate. In the composite fluorescent glass film, fluorescent powder, glass powder and heat-conducting filler are mixed according to the mass fraction ratio of 3: 2: 5; the heat-conducting filler is formed by mixing two to three of three heat-conducting materials, namely Al2O3, AlN and BN; blue light generated by the blue laser diode excites the composite fluorescent glass film to generate yellow light, and the yellow light is mixed with blue laser to form uniform white light. According to the high-thermal-conductivity composite fluorescent glass film disclosed by the invention, the thermal effect generated by the film layer during laser excitation can be greatly reduced, and the heat dissipation requirement of laser illumination can be well met.

Description

technical field [0001] The invention relates to the field of laser lighting, in particular to a preparation method and application of a fluorescent composite glass film. Background technique [0002] White LEDs have the advantages of energy saving, high efficiency, and environmental friendliness. However, blue LED chips have the problem of "slump in efficiency", which makes them unsuitable for high-power solid-state lighting. Compared with blue LED chips, blue laser diodes do not have the above problems. Therefore, a high-power, high-brightness white light illumination device can be obtained by combining a blue laser diode with a fluorescent conversion material. [0003] Since high-energy laser excitation will produce a strong thermal effect, in order to ensure that the laser lighting device has good luminescence performance and long-term luminescence stability during operation, it is required that the fluorescence conversion material for laser lighting applications has exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/79C09K5/14
CPCC09K11/025C09K11/77747C09K5/14Y02B20/00
Inventor 王乐黄敏航邾强强张宏
Owner CHINA JILIANG UNIV
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