Polyol-mediated Synthesis Of Well-dispersed α-nayf_4 Nanocubes

摘要

In this paper, well-dispersed α-NaYF_4 nanocubes were synthesized with a polyol method. The influence of molar ratio of F-/Y~(3+)/Na+ and type of polyol on the phase and morphology of the as-prepared NaYF_4 samples was examined. Formation process of these α-NaYF_4 nanocubes was traced via time-dependent experiments. Photoluminescence measurements demonstrated the as-prepared nanocubes are good up-and down-conversion luminescent host materials.