Blue emission of Sr2-xCaxP2O7:Eu2+ for near UV excitation

	Blue emission of Sr2-xCaxP2O7:Eu2+ for near UV excitation
其他题名	论文其他题名
	Yu J. Y.; Zhang X.; Hao Z. D.; Luo Y. S.; Wang X. J.; Zhang J. H.
	2012
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	515 页码:39-43
摘要	Sr2-xCaxP2O7:Eu2+ (x = 0 - 2) phosphors with intense and adjustable blue emission are prepared by solid state reaction. The crystal phase evolution and correlated photoluminescence properties are studied as a function of Ca2+ content based on the experimental measurements of X-ray diffraction, photoluminescence and fluorescence decay. Our results indicate that Sr2-xCaxP2O7:Eu2+ crystallize in single alpha-Sr2P2O7 type phase for x <= 0.75. As increasing x from 0.75, alpha-Ca2P2O7 type phase starts to form and increase followed by reduction of alpha-Sr2P2O7 type phase. The single alpha-Ca2P2O7 type phase is obtained only at x = 2. The emission band (band I) in alpha-Sr2P2O7 type phase and that (band II) in alpha-Ca2P2O7 type phase both shift to the red on increasing x due to enhancement of crystal field strength in case of Ca2+ substitution for Sr2+. This substitution also leads to remarkably inhomogeneous broadening of band I, within which energy transfer from the high energy Eu2+ to the low energy one is observed. The superposition of band I and band II results in various distributions of intense emission band including the redshifted and more broadened ones suitable for white light generation. (C) 2011 Published by Elsevier B.V.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24634
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yu J. Y.,Zhang X.,Hao Z. D.,et al. Blue emission of Sr2-xCaxP2O7:Eu2+ for near UV excitation[J]. Journal of Alloys and Compounds,2012,515:39-43.
APA	Yu J. Y.,Zhang X.,Hao Z. D.,Luo Y. S.,Wang X. J.,&Zhang J. H..(2012).Blue emission of Sr2-xCaxP2O7:Eu2+ for near UV excitation.Journal of Alloys and Compounds,515,39-43.
MLA	Yu J. Y.,et al."Blue emission of Sr2-xCaxP2O7:Eu2+ for near UV excitation".Journal of Alloys and Compounds 515(2012):39-43.

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