Eu2+-activated Ca8 Zn (SiO4) 4Cl2: An intense green emitting phosphor for blue light emitting diodes

	Eu2+-activated Ca8 Zn (SiO4) 4Cl2: An intense green emitting phosphor for blue light emitting diodes
	Lu W.; Hao Z.; Zhang X.; Liu Y.; Luo Y.; Liu X.; Wang X.; Zhang J.
	2011
发表期刊	Journal of the Electrochemical Society
ISSN	134651
卷号	158 期号:2 页码:H124-H127
摘要	We report intense green luminescence upon blue light excitation in Eu 2+-activated Ca8 Zn (SiO4)4Cl 2 prepared by high temperature solid state reaction with nominal composition of (2-x) CaO-xZnO-SiO2-CaCl2 (0&lex&le1.1). It is observed that the material phase gradually converts from Ca3 SiO4 Cl2: Eu2+ to Ca8 Zn (SiO 4)4 Cl2: Eu2+ followed by improved luminescent properties with increasing x. The two phosphors both emit with a maximum at 505 nm. Significantly, Ca8 Zn (SiO4) 4 Cl2: Eu2+ shows a more intense excitation band in the blue centered at 450 nm. Upon 450 nm excitation, the integrated emission intensity of Ca8 Zn (SiO4)4 Cl 2: Eu2+ is 1.3 times stronger Ca8 Mg (SiO 4)4 Cl2: Eu2+ and nearly the same as Ca3 Sc2 Si3 O12: Ce3+ phosphors. Attempts to understand the origins of the intense luminescence are presented on the basis of diffuse reflection spectra and fluorescence decays of Ca8 Zn (SiO4)4 Cl2: Eu2+ in comparison with related phosphors. The present results suggest that Ca 8 Zn (SiO4)4 Cl2: Eu2+ could be a promising green emitting phosphor for excitation by blue light emitting diodes. 2010 The Electrochemical Society.
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34563
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Lu W.,Hao Z.,Zhang X.,et al. Eu2+-activated Ca8 Zn (SiO4) 4Cl2: An intense green emitting phosphor for blue light emitting diodes[J]. Journal of the Electrochemical Society,2011,158(2):H124-H127.
APA	Lu W..,Hao Z..,Zhang X..,Liu Y..,Luo Y..,...&Zhang J..(2011).Eu2+-activated Ca8 Zn (SiO4) 4Cl2: An intense green emitting phosphor for blue light emitting diodes.Journal of the Electrochemical Society,158(2),H124-H127.
MLA	Lu W.,et al."Eu2+-activated Ca8 Zn (SiO4) 4Cl2: An intense green emitting phosphor for blue light emitting diodes".Journal of the Electrochemical Society 158.2(2011):H124-H127.