Article ID Journal Published Year Pages File Type
1260866 Journal of Rare Earths 2014 5 Pages PDF
Abstract

Hexagonal-phase NaYF4:Yb3+,Er3+ upconversion nanoparticles (UCNPs) with a uniform size distribution were synthesized using rare-earth acetates as precursors. The effects of reaction temperature and time on the phase transition process of the UCNPs were systematically studied. Based on the evolution of particle morphology and phase with temperature and time, it could be concluded that the transition from cubic phase to hexagonal phase for NaYF4:Yb3+,Er3+ UCNPs was consistent with a dissolution/recrystallization process. In addition, the shape and size of the UCNPs could be controlled by adjusting the solvent ratio and the precursor ratio, respectively.

Graphical AbstractPhase-, shape- and size-controlled synthesis of NaYF4:Yb3+,Er3+ nanoparticlesFigure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
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