Enhanced upconversion emission in Yb3+ and Er3+ codoped NaGdF4 nanocrystals by introducing Li+ ions.

Abstract

β-NaGdF(4) : Yb(3+)/Er(3+) nanoparticles (NPs) codoped with Li(+) ions were prepared for the first time via a thermal decomposition reaction of trifluoroacetates in oleylamine. The influence of site occupancy of Li(+) on the upconversion emission of β-NaGdF(4) : Yb(3+)/Er(3+) NPs was investigated in detail. The upconversion emission intensity was… (More)
DOI: 10.1039/c1nr11365h

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