Fluorescent ceramic with surface light trap structure enhanced illumination and preparation method thereof

A technology of fluorescent ceramics and structural enhancement, applied in luminescent materials, chemical instruments and methods, additive processing, etc., can solve the problems of increased material and device cost, complex manufacturing process, serious material loss, etc., to avoid mechanical damage and achieve high efficiency. Fluorescence and utilization efficiency improvement effect

Inactive Publication Date: 2018-09-14
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the disclosed methods for manufacturing fluorescent materials can improve the luminous performance, they require multiple processing of fluorescent transparent ceramics, and the manufacturing process is complicated.
Ceramics are hard and brittle materials. For ceramics with complex geometric configurations, not only the processing cost is high, but also the construction period is long.
In addition, the loss of materials is serious, which increases the cost of materials and devices.

Method used

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  • Fluorescent ceramic with surface light trap structure enhanced illumination and preparation method thereof
  • Fluorescent ceramic with surface light trap structure enhanced illumination and preparation method thereof
  • Fluorescent ceramic with surface light trap structure enhanced illumination and preparation method thereof

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preparation example Construction

[0032] Preparation of ceramic slurry. Weigh the required ceramic powder, weigh an appropriate amount of photosensitive resin, and then fully mix the ceramic powder and photosensitive resin to prepare a ceramic slurry. In an optional embodiment, the ceramic powder may be a rare earth doped transparent ceramic powder. For example, YAG:Ce powder, Al 2 o 3 / YAG: Ce powder, Al 2 o3 : Tb powder, Lu 2 o 3 : Ce powder, Y 2 o 3 :Ce powder, LuAG:Ce powder, etc. In an optional embodiment, the photosensitive resin comprises epoxy acrylate resin, epoxy resin, photoinitiator, thixotropic agent and reactive diluent, preferably comprises 50~65wt% epoxy acrylate resin, 4~8wt% cyclo Oxygen resin, 4-6wt% photoinitiator, 2-5wt% thixotropic agent and 10-20wt% reactive diluent, the sum of the mass percentages of each component is 100wt%. Wherein, the photoinitiator can be at least one of 2,2-diethoxyacetophenone, benzophenone, 4-phenylbenzophenone and chlorinated benzophenone. The thixotr...

Embodiment 1

[0040] For the fluorescent ceramics with a surface light trap structure according to the present invention, 80g of YAG:0.1mol.% Ce ceramic powder is accurately weighed, 40g of photosensitive resin is added, and after blending, a planetary mill is used to fully mix to obtain a ceramic slurry. Such as figure 1 As shown, the designed ceramic surface structure parameters are: is 100 μm, h is 87 μm, and L is 150 μm, input into the 3D printer program. Pour the ceramic slurry into the trough of the 3D printer, and print the model of the fluorescent ceramic with the surface light trap structure and the model of the fluorescent ceramic without the surface light trap structure respectively, and finally obtain the ceramic green body with an ordered array structure on the surface and Fluorescent ceramic green body without surface light trap structure. Among them, the parameters of 3D printing include: the thickness of a single layer is 0.01mm; the number of printing layers is 40; the w...

Embodiment 2

[0042] Fluorescent ceramics with a surface light trap structure according to the present invention, accurately weigh 80g Al 2 o 3 / YAG: 0.4mol.% Ce ceramic powder, add 64g of photosensitive resin, after blending, use a planetary mill to fully mix to obtain ceramic slurry. Such as figure 1 As shown, the designed ceramic surface structure parameters are: is 10 μm, h is 10 μm, and L is 20 μm, input into the 3D printer program. Pour the ceramic slurry into the trough of the 3D printer, and print the model of the fluorescent ceramic with the surface light trap structure and the model of the fluorescent ceramic without the surface light trap structure respectively, and finally obtain the ceramic green body with an ordered array structure on the surface and Fluorescent ceramic green body without surface light trap structure. Among them, the parameters of 3D printing include: the thickness of a single layer is 0.04mm; the number of printing layers is 10; the wavelength of ultravi...

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Abstract

The invention provides a fluorescent ceramic with surface light trap structure enhanced illumination and a preparation method thereof. Conical micro-structured light traps are constructed on the surface of the fluorescent ceramic in order, and have parameters as follows: phi is more than or equal to 10 microns and less than or equal to 100 microns, h is more than or equal to 8.6 microns and less than or equal to 100 microns, L is more than or equal to 10 microns and less than or equal to 150 microns, and theta is more than 0 and less than or equal to 60 degrees, where phi is the diameter of the bottom surface of the cone, h is the height of the cone, L is the distance between the circle centers of the bottom surfaces of each two adjacent cones, and theta is twice of the angle between the generatrix and the height of each cone.

Description

technical field [0001] The invention relates to a fluorescent ceramic with enhanced luminescence by a surface light trap structure and a preparation method thereof, in particular to a method for improving the luminous efficiency of the fluorescent ceramic, and belongs to the technical field of 3D printing fluorescent ceramic applications. Background technique [0002] Currently, lighting and display technologies using LEDs and LDs as light sources have been widely used. Compared with traditional mercury lamps and halogen lamps, it has the characteristics of high brightness, high luminous efficiency, miniaturization, wider color gamut and longer service life. At present, commercial LED lighting devices usually use phosphor powder dispersed in resin. In order to meet the needs of higher power and power density, transparent ceramics are expected to replace commercial resin-dispersed phosphors due to their excellent thermal properties and luminous thermal stability. Packaging m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/505C04B35/10C04B35/50C04B35/622C04B35/638B33Y10/00C09K11/77
CPCB33Y10/00C04B35/10C04B35/50C04B35/505C04B35/622C04B35/638C04B2235/6026C09K11/7743C09K11/7766C09K11/7774
Inventor 胡松周国红张芸莉李宏书王士维
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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