Research Article
Upconversion Luminescence and Magnetic Turning of NaLuF4:Yb3+/Tm3+/Gd3+ Nanoparticles and Their Application for Detecting Acriflavine
Figure 1
TEM images of upconversion nanocrystals: (a) NaLuF4:20%Yb3+/0.5%Tm3+; (b) NaLuF4:20%Yb3+/0.5%Tm3+/20%Gd3+; (c) NaLuF4:20%Yb3+/0.5%Tm3+/60%Gd3+; NaLuF4:20%Yb3+/0.5%Tm3+; (d) the high-resolution TEM image of (c).
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