Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals
KAUST Grant NumberOSR-2018-CRG7-3736
Online Publication Date2021-10-12
Print Publication Date2021-12
Permanent link to this recordhttp://hdl.handle.net/10754/672984
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AbstractSurface 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.
CitationFan, J., Liang, L., Gu, Y., & Liu, X. (2021). Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals. Optical Materials: X, 12, 100104. doi:10.1016/j.omx.2021.100104
SponsorsThis work was supported by Agency for Science, Technology and Research (A*STAR) under its AME program (Grant NO. A1883c0011 and A1983c0038), National Research Foundation, the Prime Minister's Office of Singapore under its NRF Investigatorship Programme (Award No. NRF-NRFI05-2019-0003), and the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (Award No. OSR-2018-CRG7-3736).
JournalOptical Materials: X