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	Influences of er3+ content on structure and upconversion emission of oxyfluoride glass ceramics containing caf2 nanocrystals
	Chen, DQ; Wang, YS; Yu, YL; Ma, E; Bao, F; Hu, ZJ; Cheng, Y
刊名	Materials chemistry and physics
	2006-02-10
卷号	95期号:2-3页码:264-269
关键词	Oxyfluoride glass ceramics Nanocrystals Er3+ doping Upconversion luminescence
ISSN号	0254-0584
DOI	10.1016/j.matcehmphys.2005.06.017
通讯作者	Wang, ys()
英文摘要	Transparent 45sio(2)-25al(2)o(3)-5cao-10naf-15caf(2) glass ceramics doped with different content of erbium ion (er3+) were prepared. x-ray diffraction (xrd) and transmission electron microscope (tem) analyses evidenced the spherical caf2 nanocrystals homogeneously embedded among the glassy matrix. with increasing of er3+ content, the size of caf2 nanocrystals decreased while the number density increased. the crystallization kinetics studies revealed that caf2 crystallization was a diffusion-controlled growth process from small dimensions with decreasing nucleation rate. er3+ could act as nucleating agent to lower down crystallization temperature, while some of them may stay at the crystal surfaces to retard the growth of crystal. intense red and weak green upconversion emissions were recorded for glass ceramics and their intensities increased with the increasing of er3+ content under 980 nm excitation. however, the concentration quenching effect appeared when er3+ doping reached 2 mol%. these results could be attributed to the change of ligand field of er3+ ions due to the incorporation of er3+ ions into precipitated fluoride nanocrystals. (c) 2005 elsevier b.v. all rights reserved.
WOS关键词	LUMINESCENCE ; ER3+ ; IONS ; NANOCRYSTALS
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000233383400014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2379340
专题	中国科学院大学
通讯作者	Wang, YS
作者单位	Chinese Acad Sci, Grad Sch, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
推荐引用方式 GB/T 7714	Chen, DQ,Wang, YS,Yu, YL,et al. Influences of er3+ content on structure and upconversion emission of oxyfluoride glass ceramics containing caf2 nanocrystals[J]. Materials chemistry and physics,2006,95(2-3):264-269.
APA	Chen, DQ.,Wang, YS.,Yu, YL.,Ma, E.,Bao, F.,...&Cheng, Y.(2006).Influences of er3+ content on structure and upconversion emission of oxyfluoride glass ceramics containing caf2 nanocrystals.Materials chemistry and physics,95(2-3),264-269.
MLA	Chen, DQ,et al."Influences of er3+ content on structure and upconversion emission of oxyfluoride glass ceramics containing caf2 nanocrystals".Materials chemistry and physics 95.2-3(2006):264-269.

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