TY - JOUR
T1 - Opposing effects of energy migration and cross-relaxation on surface sensitivity of lanthanide-doped nanocrystals
AU - Fan, Jingyue
AU - Liang, Liangliang
AU - Gu, Yuyang
AU - Liu, Xiaogang
N1 - KAUST Repository Item: Exported on 2021-10-28
Acknowledged KAUST grant number(s): OSR-2018-CRG7-3736
Acknowledgements: This 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).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2021/10/12
Y1 - 2021/10/12
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/672984
UR - https://linkinghub.elsevier.com/retrieve/pii/S2590147821000334
UR - http://www.scopus.com/inward/record.url?scp=85117254452&partnerID=8YFLogxK
U2 - 10.1016/j.omx.2021.100104
DO - 10.1016/j.omx.2021.100104
M3 - Article
SN - 2590-1478
VL - 12
SP - 100104
JO - Optical Materials: X
JF - Optical Materials: X
ER -