Observation and photoluminescence properties of two Er3+ centers in CaSc2O4:Er3+, Yb3+ upconverting phosphor

	Observation and photoluminescence properties of two Er3+ centers in CaSc2O4:Er3+, Yb3+ upconverting phosphor
	Feng, L. Y.; Z. D. Hao; Y. S. Luo; X. Zhang; L. L. Zhang; G. H. Pan; H. J. Wu and J. H. Zhang
	2017
发表期刊	Journal of Alloys and Compounds
卷号	708
摘要	CaSc2O4 phosphors codoped with 0.2% Er3+ and various concentrations (0-15%) of Yb3+ are prepared by high temperature solid-state reaction. Two Er3+ luminescence centers are observed and they are assigned to substitution for Ca2+ site (Er3+(I)) and Sc3+ site (Er3+(II)), respectively. We find that the Er3+(I) centers are preferentially formed at low doping concentration and their number starts to decrease along with the increase of the Er3+(II) centers on increasing Yb3+ concentration. Meanwhile, intense upconversion luminescence (UCL) with color tuning from green to red is observed upon 980 nm excitation. The decomposition of the UCL spectra exhibits the main contribution from the Er3+(I) centers in the range of Yb3+ concentration of this work. This result is attributed to efficient emissions of the Er3+(I) centers for the long lifetimes of Er3+(I) both on the green and red emitting levels. Furthermore, we have observed the UCL intensity of CaSc2O4: 0.2% Er3+, 15% Yb3+ is 4 times as strong as that in Y2O3: 0.2 Er3+, 15% Yb3+. (C) 2017 Elsevier B.V. All rights reserved.
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/181722/58897
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Feng, L. Y.,Z. D. Hao,Y. S. Luo,et al. Observation and photoluminescence properties of two Er3+ centers in CaSc2O4:Er3+, Yb3+ upconverting phosphor[J]. Journal of Alloys and Compounds,2017,708.
APA	Feng, L. Y..,Z. D. Hao.,Y. S. Luo.,X. Zhang.,L. L. Zhang.,...&H. J. Wu and J. H. Zhang.(2017).Observation and photoluminescence properties of two Er3+ centers in CaSc2O4:Er3+, Yb3+ upconverting phosphor.Journal of Alloys and Compounds,708.
MLA	Feng, L. Y.,et al."Observation and photoluminescence properties of two Er3+ centers in CaSc2O4:Er3+, Yb3+ upconverting phosphor".Journal of Alloys and Compounds 708(2017).

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