Preparation method of blue green LED luminescent material
A luminescent material, blue-green technology, applied in the field of materials, can solve the problems of lack of spectrum, LED phosphors are difficult to achieve color rendering index, etc., and achieve the effect of simple preparation process, good brightness, and easy industrial production
Active Publication Date: 2017-08-04
XIA MEN KE YU PHOTOELECTRIC CO LTD
9 Cites 1 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Abstract
The invention relates to a preparation method of a blue green LED luminescent material. The chemical structural formula of the blue green LED luminescent material is M6-x(GayAl1-y)14SiO29:xEu, wherein M is at least one or several of group II alkali earth metal elements, x is not less than 0.001 and not more than 1, and y is not less than 0 and not more than 1. The preparation method comprises the following steps: weighing europium oxide, an M-containing compound, gallium oxide, alumina and silica according to the composition and the stoichiometric ratio of the chemical formula; adding a flux to the above raw materials, carrying out ball-milling mixing on the raw materials and the flux, and screening the obtained mixture by a 120 mesh screen; calcining the screened raw materials in a sintering furnace under the protection of inert gas atmosphere; and serially processing the obtained sintered product to obtain the blue green LED luminescent material. The synthesized target luminescent material has good brightness and good thermal stability, and the color rendering index can reach 95 or more.
Application Domain
Luminescent compositions
Technology Topic
Color rendering indexChemistry +15
Image
Examples
- Experimental program(5)
Example Embodiment
Example Embodiment
Example Embodiment
PUM
Property | Measurement | Unit |
The average particle size | 12.0 | µm |
Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Blue-green LED (light emitting diode) light-emitting material
Owner:广东科煜光电有限公司
Aluminum environment-friendly nickel-free sealing agent and preparation method and sealing method thereof
Owner:OUBONE GUANGZHOU UNITED BUILDING MATERIAL CO LTD
Fundus camera and control method for the fundus camera
Owner:CANON KK
Classification and recommendation of technical efficacy words
- good brightness
- good thermal stability
Exposure control method for human face image acquisition system under near-infrared condition
Owner:SOUTH CHINA UNIV OF TECH
Double-color burnt-out sofa fabric technology
InactiveCN106120136Afluff erectgood brightness
Owner:ZHEJIANG FAMOUS TEXTILE CO LTD
Fundus camera and control method for the fundus camera
Owner:CANON KK
Blue-green LED (light emitting diode) light-emitting material
Owner:广东科煜光电有限公司