Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals

被引：0

作者：

Fan J. ^{[1
]}

Liang L. ^{[1
]}

Gu Y. ^{[1
]}

Liu X. ^{[1
,2
]}

机构：

[1] Department of Chemistry, National University of Singapore

[2] SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen

来源：

Optical Materials: X | 2021年 / 12卷

基金：

新加坡国家研究基金会;

关键词：

Cross-relaxation; Energy migration; Lanthanide-doping; Nanocrystal; Surface sensitivity;

D O I：

10.1016/j.omx.2021.100104

中图分类号：

学科分类号：

摘要：

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

引用

共 29 条

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