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Title: Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals
Authors: Fan, Jingyue
Liang, Liangliang 
Gu, Yuyang 
Liu, Xiaogang 
Keywords: Cross-relaxation
Energy migration
Surface sensitivity
Issue Date: 1-Oct-2021
Publisher: Elsevier B.V.
Citation: Fan, Jingyue, Liang, Liangliang, Gu, Yuyang, Liu, Xiaogang (2021-10-01). Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals. Optical Materials: X 12 : 100104. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Surface sensitivity of lanthanide-doped nanocrystals has a great utility in controlling their optical properties. Surface sensitivity can be principally promoted by energy migration. Herein, we demonstrate that cross-relaxation between lanthanides makes nanocrystals less sensitive to environmental changes. We show that by codoping ytterbium ions (Yb3+) and neodymium ions (Nd3+) in hexagonal-phase sodium yttrium fluorides, surface sensitivity can be manipulated by energy transfer from Yb3+ to Nd3+. These findings enhance our understanding of surface quenching of nanocrystals and offer new opportunities in developing highly luminous nanoprobes for molecular sensing and biomedical applications. © 2021 The Authors
Source Title: Optical Materials: X
ISSN: 2590-1478
DOI: 10.1016/j.omx.2021.100104
Rights: Attribution 4.0 International
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