کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1260866 | 971761 | 2014 | 5 صفحه PDF | دانلود رایگان |
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 as PowerPoint slide
Journal: Journal of Rare Earths - Volume 32, Issue 11, November 2014, Pages 1032–1036