Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 phosphors for white LEDs with excellent colour rendering and high luminous efficiency

	Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 phosphors for white LEDs with excellent colour rendering and high luminous efficiency
其他题名	论文其他题名
	Liu Y. F.; Zhang X.; Hao Z. D.; Lu W.; Liu X. Y.; Wang X. J.; Zhang J. H.
	2011
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	44 期号:7
摘要	Lu-modified (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 (CLSMS : Ce3+) yellow emitting phosphors are prepared by a solid-state reaction. Controllable luminescent intensity and emitting colour are studied as a function of Lu and Mg contents. Fixing the Mg content to be 1, the effect of Lu content on crystal phase formation, luminescence properties and temperature characteristics is studied. It is revealed that the Lu-induced luminescent enhancement is the result of an increase in absorbance of Ce3+ rather than the internal quantum efficiency. Intense and broadband emission is realized by controlling the Lu content to obtain a pure CLSMS crystal phase. The maximum luminescence intensity is obtained at x = 0.54, which is as high as 156% of the Lu-free phosphor. The Lu-containing phosphor also exhibits better temperature characteristics for its big activation energy (0.20 eV) than the Lu-free one (0.18 eV). Combining the present phosphor with a blue light-emitting diode (LED) chip, a white LED with an excellent colour rendering index R-a of 86 and a high luminous efficiency of 86 lm W-1 is obtained. The results of the present study demonstrate that the CLSMS : Ce3+ phosphors show a good performance and are attractive candidates for commercial applications when used in white LEDs.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26069
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu Y. F.,Zhang X.,Hao Z. D.,et al. Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 phosphors for white LEDs with excellent colour rendering and high luminous efficiency[J]. Journal of Physics D-Applied Physics,2011,44(7).
APA	Liu Y. F..,Zhang X..,Hao Z. D..,Lu W..,Liu X. Y..,...&Zhang J. H..(2011).Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 phosphors for white LEDs with excellent colour rendering and high luminous efficiency.Journal of Physics D-Applied Physics,44(7).
MLA	Liu Y. F.,et al."Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06)(Sc2-yMgy)Si3O12 phosphors for white LEDs with excellent colour rendering and high luminous efficiency".Journal of Physics D-Applied Physics 44.7(2011).

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