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Dalton Trans. 2013 Oct 7;42(37):13315-8. doi: 10.1039/c3dt51652k. Epub 2013 Aug 8.

Separation and phase transition investigation of Yb3+/Er3+ co-doped NaYF4 nanoparticles.

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1
State Key Laboratory of Chemical Resource Engineering, P.O. Box 98, Beijing University of Chemical Technology, Beijing 100029, PR China.

Abstract

Density gradient ultracentrifuge separation was employed to study the phase transition of Yb(3+)/Er(3+) co-doped NaYF4 from α-phase to β-phase. It was found that the cubic α-phased NaYF4 was rich in Y, exhibited predominantly red luminescence, whilst the newly formed hexagonal β-phased NaYF4 had relatively higher Yb and Er atomic ratios, exhibited green luminescence most strongly.

PMID:
23929273
DOI:
10.1039/c3dt51652k
[Indexed for MEDLINE]
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