Title:
CAO-SIO2-EUO FULL SPECTRUM FLUORESCENT POWDER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/004224
Kind Code:
A1
Abstract:
The present invention relates to a CAO-SIO2-EUO full spectrum fluorescent powder, which is formed by mixing a first Ca2SiO4:Eu fluorescent powder and a second Ca2SiO4:Eu fluorescent powder doped with different amounts of Eu. The first Ca2SiO4:Eu fluorescent powder comprises the following oxide components in mass fractions: 51.87 to 58.07％ of CaO, 30.87 to 32.76% of SiO2, and 9.16 to 17.26% of EuO. The second Ca2SiO4:Eu fluorescent powder comprises the following oxide components in mass fractions: 8.25 to 19.74% of CaO, 17.67 to 21.15% of SiO2, and 59.12 to 74.07% of EuO. Compared with the prior art, the present invention has the advantages of generating a double-peak full spectrum emission light having emission wavelengths at 525 nm and 630 nm under photoexcitation of ultraviolet light, obtaining more optimized white light and being close to natural light, etc.
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Inventors:
FANG YONGZHENG (CN)
HOU JINGSHAN (CN)
LIU YU (CN)
LIU JINGHUI (CN)
JIANG GUANGXIANG (CN)
LIU YUFENG (CN)
ZHAO GUOYING (CN)
HOU JINGSHAN (CN)
LIU YU (CN)
LIU JINGHUI (CN)
JIANG GUANGXIANG (CN)
LIU YUFENG (CN)
ZHAO GUOYING (CN)
Application Number:
PCT/CN2020/095603
Publication Date:
January 14, 2021
Filing Date:
June 11, 2020
Export Citation:
Assignee:
SHANGHAI INST TECH (CN)
International Classes:
C09K11/79; C09K11/08; C09K11/77; H01L33/50
Foreign References:
| CN110283592A | 2019-09-27 | |||
| CN110157428A | 2019-08-23 | |||
| CN109679654A | 2019-04-26 | |||
| CN106995698A | 2017-08-01 | |||
| CN104263359A | 2015-01-07 | |||
| CN109609128A | 2019-04-12 | |||
| CN106601892A | 2017-04-26 |
Other References:
SATO YASUSHI , KATO HIDEKI, KOBAYASHI MAKOTO, MASAKI TAKAKI, YOON DAE-HO, KAKIHANA MASATO: "Tailoring of Deep-Red Luminescence in Ca2SiO4:Eu2+", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, vol. 53, no. 30, 10 June 2014 (2014-06-10), pages 7756 - 7759, XP055772390, ISSN: 1433-7851, DOI: 10.1002/anie.201402520
ZHI-YONG MAO , YING-CHUN ZHU , YANG WANG , LIN GAN: "Ca2SiO4:Ln (Ln = Ce3+, Eu2+, Sm3+) tricolor emission phosphors and their application for near-UV white light-emitting diode", JOURNAL OF MATERIAL SCIENCE, vol. 49, no. 13, 18 March 2014 (2014-03-18), pages 4439 - 4444, XP055772394, ISSN: 1573-4803, DOI: 10.1007/s10853-014-8140-4
ZHI-YONG MAO , YING-CHUN ZHU , YANG WANG , LIN GAN: "Ca2SiO4:Ln (Ln = Ce3+, Eu2+, Sm3+) tricolor emission phosphors and their application for near-UV white light-emitting diode", JOURNAL OF MATERIAL SCIENCE, vol. 49, no. 13, 18 March 2014 (2014-03-18), pages 4439 - 4444, XP055772394, ISSN: 1573-4803, DOI: 10.1007/s10853-014-8140-4
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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