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Nanomaterials  2013 

Tuning NaYF4 Nanoparticles through Alkaline Earth Doping

DOI: 10.3390/nano3040583

Keywords: impurity doping, nanoparticles, phase transformation, upconversion

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Abstract:

Phase and size of lanthanide-doped nanoparticles are the most important characteristics that dictate optical properties of these nanoparticles and affect their technological applications. Herein, we present a systematic study to examine the effect of alkaline earth doping on the formation of NaYF 4 upconversion nanoparticles. We show that alkaline earth doping has a dual function of tuning particle size of hexagonal phase NaYF 4 nanoparticles and stabilizing cubic phase NaYF 4 nanoparticles depending on composition and concentration of the dopant ions. The study described here represents a facile and general strategy to tuning the properties of NaYF 4 upconversion nanoparticles.

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