Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications

	Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications
其他题名	论文其他题名
	Liu Y. F.; Zhang X.; Hao Z. D.; Luo Y. S.; Wang X. J.; Zhang J. H.
	2011
发表期刊	Journal of Materials Chemistry
ISSN	0959-9428
卷号	21 期号:41 页码:16379-16384
摘要	We report luminescence properties of Ce3+ and Mn2+ co-activated Ca3Sc2Si3O12 (CSS) silicate garnets. It is observed that Mn2+ may not only occupy Ca2+ sites to generate a yellow emission (Mn2+(I)) at 574 nm but also Sc3+ sites to generate a red emission (Mn2+(II)) at 680 nm. Considerable Mn2+ substitution for Sc3+ can be performed through balancing their charge difference by introducing a trivalent rare earth ion, such as La3+ and Ce3+, to replace Ca2+. Meanwhile, remarkable energy transfer from the green emitting Ce3+ to both Mn2+(I) and Mn2+(II) can occur, making tunable color and white light emission available in CSS: Ce3+, Mn2+ upon blue excitation into Ce3+. White LEDs combined by CSS: Ce3+, Mn2+ phosphors and blue LED chips are fabricated. A CSS: 0.03Ce(3+), 0.2Mn(2+) phosphor with deficient red emission is enriched in red by increasing Ce3+ concentration to 0.1, which leads to increase of Mn2+(II) number in case of charge compensation by more Ce3+ ions. Consequently, the color rendering index of the white LEDs is improved from 64 to 76. The results of this work indicate that CSS: Ce3+, Mn2+ garnet could be a promising single phase phosphor for 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/181722/26039
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. Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications[J]. Journal of Materials Chemistry,2011,21(41):16379-16384.
APA	Liu Y. F.,Zhang X.,Hao Z. D.,Luo Y. S.,Wang X. J.,&Zhang J. H..(2011).Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications.Journal of Materials Chemistry,21(41),16379-16384.
MLA	Liu Y. F.,et al."Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications".Journal of Materials Chemistry 21.41(2011):16379-16384.

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