Enhanced dye-sensitized up-conversion luminescence of neodymium-sensitized multi-shell nanostructures

doi:10.37188/CO.2020-0097

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	Enhanced dye-sensitized up-conversion luminescence of neodymium-sensitized multi-shell nanostructures
	D. Wang; B. Xue; L.-P. Tu; Y.-L. Zhang; J. Song; J.-L. Qu and X.-G. Kong
	2021
发表期刊	Chinese Optics
ISSN	20951531
卷号	14 期号:2 页码:418-430
摘要	Lanthanide-ion-doped upconversion luminescence is limited by the small absorption cross-section and narrow absorption band of lanthanide ions, which results in weak luminescence. Recently, a dye-sensitized method has proven to be an effective strategy of increasing upconversion luminescence. However, simply attaching dye molecules to nanoparticles with classic Yb-doped nanostructures cannot effectively activate the sensitizing ability of the dye molecules. In response to this problem, we designed Nd-sensitized core/shell/shell (NaYF4:Yb/Er (20/2%)@ NaYF4:Yb (10 %)@ NaYF4:Nd (80 %)) nanostructures, compared with the classic IR-806 sensitized NaYF4:Yb/Er nanostructure, their upconversion luminescence (500 to 700 nm) was approximately enhanced by a factor of 38. Through analysis of the nanostructure's emission and luminescence lifetime data, the enhancement was confirmed by the effective overlap of Nd absorption with the emission of near-infrared dye molecules and the protective effects of the shell structure on the luminescent center (the lifetime of Er (4S3/24I15/2) was increased by 1.7 times). In addition, we found that the doping Yb3+ in the outermost layer will decrease the dye-sensitized luminescence intensity. Furthermore, this Nd-sensitized core/shell/shell structure also achieved enhancement in the sensitized upconversion luminescence of the luminescence centers of Ho and Tm, which establishes a foundation for enhanced dye-sensitized upconversion luminescence. Copyright 2021 Chinese Optics. All rights reserved.
DOI	10.37188/CO.2020-0097
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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/181722/65218
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	D. Wang,B. Xue,L.-P. Tu,et al. Enhanced dye-sensitized up-conversion luminescence of neodymium-sensitized multi-shell nanostructures[J]. Chinese Optics,2021,14(2):418-430.
APA	D. Wang,B. Xue,L.-P. Tu,Y.-L. Zhang,J. Song,&J.-L. Qu and X.-G. Kong.(2021).Enhanced dye-sensitized up-conversion luminescence of neodymium-sensitized multi-shell nanostructures.Chinese Optics,14(2),418-430.
MLA	D. Wang,et al."Enhanced dye-sensitized up-conversion luminescence of neodymium-sensitized multi-shell nanostructures".Chinese Optics 14.2(2021):418-430.

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