Preparation and optical properties of MgAl2O4-Ce:GdYAG composite ceramic phosphors for white LEDs

doi:10.1016/j.jeurceramsoc.2019.07.027

SIC OpenIR

	Preparation and optical properties of MgAl2O4-Ce:GdYAG composite ceramic phosphors for white LEDs
	Liu, Xin; Qian, Xinglu; Zheng, Peng; Hu, Zewang; Chen, Xiaopu; Pan, Hongming; Zou, Jun; Xie, Rongjun; Li, Jiang
	2019-12-01
Source Publication	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
Volume	39 Issue:15 Pages:4965
Subtype	Article
Abstract	High-power light-emitting-diode (LED) lighting has attracted great attention in high-luminance applications. However, the color converters with high stability, high thermal conductivity and high efficiency are scarce. In this work, we developed promising MgAl2O4-Ce:GdYAG composite ceramic color converters in which a broadband yellow-emitting phosphor Ce:GdYAG is combined with a thermally stable spinel phase MgAl2O4. The microstructure, phase composition, photoluminescence and thermal stability were investigated in detail. After being packaged with blue LED, a high luminous efficacy value of 108.41m/W is achieved by the composite ceramic phosphor with the molar ratio (MgAl2O4 to Ce:GdYAG) of 1.0 and the thickness of 0.2 mm, as well as high CRI value of 70 and low CCT value of 4543. The light scattering nature of composite ceramic phosphors makes them an ideal and promising candidate for high-brightness white LEDs.
Keyword	MgAl2O4-Ce:GdYAG composite ceramics Thermal stability Luminous efficacy Color coordinates
DOI	10.1016/j.jeurceramsoc.2019.07.027
Language	英语
WOS Research Area	Materials Science
Publisher	ELSEVIER SCI LTD
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26713
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Liu, Xin,Qian, Xinglu,Zheng, Peng,et al. Preparation and optical properties of MgAl2O4-Ce:GdYAG composite ceramic phosphors for white LEDs[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2019,39(15):4965.
APA	Liu, Xin.,Qian, Xinglu.,Zheng, Peng.,Hu, Zewang.,Chen, Xiaopu.,...&Li, Jiang.(2019).Preparation and optical properties of MgAl2O4-Ce:GdYAG composite ceramic phosphors for white LEDs.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,39(15),4965.
MLA	Liu, Xin,et al."Preparation and optical properties of MgAl2O4-Ce:GdYAG composite ceramic phosphors for white LEDs".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 39.15(2019):4965.

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