LUMINESCENT GLASS CERAMIC AND PREPARATION METHOD THEREFOR AND USE THEREOF IN LED ILLUMINATION DEVICE

WIPO Patent Application WO/2018/058935

A1

The present invention belongs to the field of inorganic luminescent materials and discloses a luminescent glass ceramic and a preparation method therefor and a use thereof in an LED illumination device. The luminescent ceramic is composed of a silicate red luminescent glass powder and Sr4Al14O25:Eu2+ in a mass ratio of 100:0 - 99.1:0.9, wherein the silicate red luminescent glass powder is composed of the following components, by molar fraction, 50% - 60% of SiO2, 20% - 30% of Na2CO3, 9% of Al2O3, 6% of CaO and 5% of Eu2O3. Since the emission wavelength range of the fluorescent powder used covers 450 - 550 nm, and a precursor glass powder can provide a red light portion at the same time, a luminescent glass ceramic obtained therefrom can obtain a warm white light under excitation of an ultraviolet chip at 385 nm. By regulating and controlling a ratio of the fluorescent powder to the glass powder, the types of the warm white light are also slightly different, and the type of field and the application range of luminescent materials are broadened.

LEI BINGFU (CN)
DENG JIANKUN (CN)
ZHANG HAORAN (CN)
LIU YINGLIANG (CN)
XIAO YONG (CN)
ZHENG MINGTAO (CN)
DONG HANWU (CN)

PCT/CN2017/080057

April 05, 2018

April 11, 2017

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UNIV SOUTH CHINA AGRICULT (CN)

C09K11/80; C03B19/06; C03C1/00; C03C4/12; C03C10/04; H01L33/50; H01L33/52

CN106479500A	2017-03-08
CN104150763A	2014-11-19
CN102464450A	2012-05-23
CN104193346A	2014-12-10
CN103159407A	2013-06-19
CN105084765A	2015-11-25
US20070110904A1	2007-05-17
JPS61122135A	1986-06-10

GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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