| 초록 |
In this study, we suggest that precise control of temperature and synthesis time, along with maintenance of a consistent synthesis temperature that does not fluctuate, are important keys to obtain high crystalized and high monodispersed hexagonal β-NaYF4 : Yb+3/Er+3 UCNP colloidal. In addition, it was confirmed that the range of synthesis conditions that can obtain high mono-dispersity varies depending on the selection of the precursor. Two types of metal salts, acetate and chloride series, were used as precursors. Clear, transparent, and well-dispersed colloidal were obtained under diverse synthesis conditions when synthesized with the acetate series. Moreover, the dispersion stability of UCNP colloids prepared with elaborately optimized conditions persisted for up to 3 months. We believe that the results of this study could be a more accessible navigation to researchers working in the fields related to the synthesis of NaYF4:rare-earth ions UCNP colloidal. |
