Enhanced3H4-3F4nonradiative relaxation of Tm3+through energy transfer to Yb3+and efficient back transfer in lowly Tm3+doped Lu1.6Sc0.4O3:Tm3+, Yb3+

	Enhanced3H4-3F4nonradiative relaxation of Tm3+through energy transfer to Yb3+and efficient back transfer in lowly Tm3+doped Lu1.6Sc0.4O3:Tm3+, Yb3+
	Liu, W.; Z. Hao; L. Zhang; X. Zhang; Y. Luo; G. Pan; H. Wu and J. Zhang
	2017
发表期刊	Journal of Alloys and Compounds
卷号	696
摘要	Under 808 nm excitation into the Tm3+:3H4level, a considerable enhancement in intensity of Tm3+:3F43H6emission with respect to Tm3+:3H43F4emission is observed in Tm3+/Yb3+codoped Lu1.6Sc0.4O3. The Tm3+-Yb3+-Tm3+forward-backward energy transfer is proved to generate an additional route for the3H43F4nonradiative relaxation, that is, energy transfer from Tm3+:3H4to Yb3+:2F5/2and the subsequent back transfer from Yb3+:2F5/2to Tm3+:3F4. The analysis of emission spectra reveals that back transfer from Yb3+that excited by the forward energy transfer is more efficient than by absorption of 980 nm infrared light. The efficiency can reach as high as 96% with an extremely low Tm3+concentration (0.05%). We propose that those Yb3+ions with nearby Tm3+ions in the forward energy transfer are preferentially excited instead of equally excited as by absorption of light. The efficiencies of the energy back transfer at different Yb3+concentrations are evaluated, indicating that the forward-backward energy transfer can act as a dominant route for the Tm3+:3H43F4nonradiative relaxation when Yb3+concentration is higher than 5%. A method to determine the radiative rate of Tm3+:3H4state based on the model of cross relaxation is also demonstrated. 2016 Elsevier B.V.
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/181722/59091
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu, W.,Z. Hao,L. Zhang,et al. Enhanced3H4-3F4nonradiative relaxation of Tm3+through energy transfer to Yb3+and efficient back transfer in lowly Tm3+doped Lu1.6Sc0.4O3:Tm3+, Yb3+[J]. Journal of Alloys and Compounds,2017,696.
APA	Liu, W..,Z. Hao.,L. Zhang.,X. Zhang.,Y. Luo.,...&H. Wu and J. Zhang.(2017).Enhanced3H4-3F4nonradiative relaxation of Tm3+through energy transfer to Yb3+and efficient back transfer in lowly Tm3+doped Lu1.6Sc0.4O3:Tm3+, Yb3+.Journal of Alloys and Compounds,696.
MLA	Liu, W.,et al."Enhanced3H4-3F4nonradiative relaxation of Tm3+through energy transfer to Yb3+and efficient back transfer in lowly Tm3+doped Lu1.6Sc0.4O3:Tm3+, Yb3+".Journal of Alloys and Compounds 696(2017).

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