Journal
DALTON TRANSACTIONS
Volume 47, Issue 26, Pages 8581-8584Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt00218e
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Funding
- National Natural Science Foundation of China [21573185, 51332008]
- Research Grants Council of Hong Kong [CityU 11208215]
- City University of Hong Kong [7004650]
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A core-shell-shell nanostructure composed of NaGdF4:Yb/Tm@NaGdF4:Nd@NaYF4 is developed to realize Yb3+-sensitized upconversion and downshifting luminescence in Nd3+ ions. The unusual photon conversion property stems from a gadolinium sub- lattice mediated Yb3+ -> Tm3+-> Gd3+ -> Nd3+ energy transfer pathway. The energy transfer processes are investigated by varying the dopant concentration and distribution, in conjunction with time decay measurements.
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