A User-Friendly Method for Synthesizing High-Quality :Yb,Er(Tm) Nanocrystals in Liquid Paraffin
Figure 5
(a) TEM and (b) HRTEM images of NaYF4:Yb,Tm NCs. (c) Up-conversion fluorescence spectrum of NaYF4:Yb,Tm NCs. Inset: the corresponding fluorescent image.