Back Energy Transfer Enhances Er3+ Upconversion Luminescence

doi:10.37188/CJL.20230100

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	Back Energy Transfer Enhances Er3+ Upconversion Luminescence
	R. Yang, H. Chen, L. Tu, Q. Li and Y. Chang
	2023
发表期刊	Faguang Xuebao/Chinese Journal of Luminescence
ISSN	10007032
卷号	44 期号:9 页码:1552-1559
摘要	Improving the upconversion luminescence efficiency is the key to promoting the practical application of upconversion luminescent materials. In the NaErF4@NaYF4 system， the inert NaYF4 shell can inhibit the concentration quenching under high Er3+ doping， and the upconversion luminescence is mainly from the energy transfer upconversion of Er3+-Er3+. In this paper， Er3+ and Yb3+ partition doped NaErF4@NaYbF4@NaYF4 core-shell nanoparticles were prepared by the coprecipitation method， and the energy transfer and back energy transfer processes between Er3+-Yb3+-Er3+ was studied. Since the 808 nm can only excite Er3+ but not Yb3+， under 808 nm excitation， Er3+ harvests the pumping energy and transfers it to Yb3+ and subsequently back to Er3+ due to the protection offered by NaYF4 inert outer shell， which finally enhances the upconversion luminescence of Er3+. When the doping concentration of Yb3+ in the intermediate layer is 100%， the maximum enhancement multiple is 24.9 and 9.79 for green and red upconversion， respectively. © 2023 Chines Academy of Sciences. All rights reserved.
DOI	10.37188/CJL.20230100
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68087
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	R. Yang, H. Chen, L. Tu, Q. Li and Y. Chang. Back Energy Transfer Enhances Er3+ Upconversion Luminescence[J]. Faguang Xuebao/Chinese Journal of Luminescence,2023,44(9):1552-1559.
APA	R. Yang, H. Chen, L. Tu, Q. Li and Y. Chang.(2023).Back Energy Transfer Enhances Er3+ Upconversion Luminescence.Faguang Xuebao/Chinese Journal of Luminescence,44(9),1552-1559.
MLA	R. Yang, H. Chen, L. Tu, Q. Li and Y. Chang."Back Energy Transfer Enhances Er3+ Upconversion Luminescence".Faguang Xuebao/Chinese Journal of Luminescence 44.9(2023):1552-1559.

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