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A kind of porous fluorescent ceramics and its preparation method, light emitting device and projection device

A technology for fluorescent ceramics and light source devices, which is applied in ceramic products, projection devices, optics, etc., can solve the problems of low light efficiency and poor mechanical properties of porous fluorescent ceramics, so as to improve light uniformity, light conversion efficiency and mechanical properties. , the effect of light efficiency improvement

Active Publication Date: 2022-02-22
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a porous fluorescent ceramic, which aims to solve the technical problems of poor mechanical properties and low light efficiency of existing porous fluorescent ceramics

Method used

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  • A kind of porous fluorescent ceramics and its preparation method, light emitting device and projection device
  • A kind of porous fluorescent ceramics and its preparation method, light emitting device and projection device
  • A kind of porous fluorescent ceramics and its preparation method, light emitting device and projection device

Examples

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Embodiment 1

[0067] In this example, porous fluorescent ceramics were prepared by wet mixing, tablet molding and atmosphere sintering. The specific preparation process is as follows:

[0068] S1: Raw material mixing

[0069] Accurately weigh the oxide raw material according to the stoichiometric ratio, specifically yttrium oxide (Y) in the present embodiment 2 o 3 ), alumina (Al 2 o 3 ), cerium oxide (CeO 2 ); Among them, Ce in the luminous ceramic 3+ The concentration of ions is 0.1-0.5%, preferably 0.2-0.4%. In this embodiment, cerium oxide (CeO 2 ) raw materials; it should be noted that the particle diameters of the raw materials yttrium oxide, cerium oxide, and aluminum oxide are all nanoscale 1 to 1000 nm, wherein the particle diameters of yttrium oxide and cerium oxide are preferably 20 to 50 nm, and the particle diameters of aluminum oxide are preferably 100 nm. ~300nm. The selection of raw material particle size is very important to control the distribution of the pore phase...

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Abstract

The invention discloses a porous fluorescent ceramic and its preparation method, a light-emitting device and a projection device, wherein the porous fluorescent ceramic includes a fluorescent ceramic phase and a pore phase dispersed in the fluorescent ceramic phase, at least part of the pore phase is located in the In the crystal grains of the above-mentioned fluorescent ceramic phase. In the fluorescent ceramic of the present invention, when the pore phase located inside the crystal grain can improve the uniformity of light emission, the light conversion efficiency and mechanical properties of the fluorescent ceramic can also be improved.

Description

technical field [0001] The invention relates to the technical field of fluorescent ceramics, in particular to a porous fluorescent ceramic, a preparation method thereof, a light emitting device and a projection device. Background technique [0002] Semiconductor LED (Light Emitting Diode, light emitting diode) or LD (laser Diode, laser diode) lamp has the advantages of energy saving and environmental protection, long service life, small size, light weight, firm structure, low working voltage, etc., and is known as the successor to incandescent lamp , fluorescent lamps, and high-intensity gas lamps are the fourth generation of lighting fixtures. At present, mainstream semiconductor lighting devices use blue LEDs or LDs to excite yellow wavelength conversion materials to emit yellow light, and part of the unabsorbed blue light and yellow light are mixed to achieve white light output. The color of the emitted light depends on the ratio of the amounts of unabsorbed blue light a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/50C04B35/117C04B35/622C04B38/00H01L33/50G03B21/20
CPCC04B35/50C04B35/117C04B35/622C04B38/0041H01L33/502G03B21/204C04B2235/3217C04B2235/3225C04B2235/3229C04B2235/5454C04B2235/5445C04B2235/602C04B2235/656C04B2235/6567C04B2235/6562C04B2235/658C04B2235/786C04B2235/95C04B2235/94C04B38/00G03B21/20H01L33/50C04B35/44
Inventor 周萌段银祥张世忠许颜正
Owner APPOTRONICS CORP LTD