Title:
PHOSPHOR POWDER OF GARNET-TYPE STRUCTURE AND LIGHT-EMITTING DEVICE PREPARED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2017/114281
Kind Code:
A1
Abstract:
The present invention provides a phosphor powder with garnet-type structure and a light-emitting device prepared therewith. The phosphor powder has the chemical formula CaaLnb-kM1
cScdAleM2
fO12:Cek, wherein Ln represents a trivalent rare earth element, the trivalent rare earth element being at least one of Lu, Y and Gd; M1
represents at least one of Zr and Hf; M2 represents at least one of Ge and Si; 1.8 ≤ a ≤ 2.2; 0.78 ≤ b ≤ 1.2; 0.8 < c < 1.2; 0.8 < d < 1.2; 1.8 ≤ e < 2.2; 0.8 < f < 1.2; and 0 < k ≤ 0.15. An emission peak wavelength and a spectral coverage area of the phosphor powder can be adjusted by modifying the identity and ratio of the trivalent rare earth elements and by modifying the concentration of a luminescence center element Ce, thereby allowing the phosphor powder to meet practical requirements of different light-emitting devices with respect to the photochromic properties of light-emitting materials.
Inventors:
ZHUANG WEIDONG (CN)
ZHENG YALING (CN)
LIU RONGHUI (CN)
ZHONG JIYOU (CN)
XU HUIBING (CN)
LI YANFENG (CN)
LIU YUANHONG (CN)
CHEN LEI (CN)
ZHENG YALING (CN)
LIU RONGHUI (CN)
ZHONG JIYOU (CN)
XU HUIBING (CN)
LI YANFENG (CN)
LIU YUANHONG (CN)
CHEN LEI (CN)
Application Number:
PCT/CN2016/111495
Publication Date:
July 06, 2017
Filing Date:
December 22, 2016
Export Citation:
Assignee:
GRIREM ADVANCED MAT CO LTD (CN)
International Classes:
C09K11/80; H01L33/50
Foreign References:
| CN1955116A | 2007-05-02 |
Other References:
ZHENG, YALING ET AL.: "Synthesis, Structure and Luminescent Properties of a New Blue-Green-Emitting Garnet Phorphor Ca2LuScZrA12GeO12: Ce3+", POYAL SOCIETY OF CHEMISTRY, vol. 6, 13 July 2016 (2016-07-13)
GONG, XINGHONG ET AL.: "Novel Garnet-Structure Ca2GdZr2 (AlO4), 3:Ce3+ Phosphor and Its Structural Tuning of Optical Properties", INORGANIC CHEMISTRY, vol. 53, no. 13, 10 June 2014 (2014-06-10), pages 6607 - 6614, XP055397466
GONG, XINGHONG ET AL.: "Novel Garnet-Structure Ca2GdZr2 (AlO4), 3:Ce3+ Phosphor and Its Structural Tuning of Optical Properties", INORGANIC CHEMISTRY, vol. 53, no. 13, 10 June 2014 (2014-06-10), pages 6607 - 6614, XP055397466
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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