Research Article

Upconversion Luminescence and Magnetic Turning of NaLuF4:Yb3+/Tm3+/Gd3+ Nanoparticles and Their Application for Detecting Acriflavine

Figure 7

Power dependence of the UC emissions of UCNPs@Acriflavine system with the concentration of acriflavine at 3.2 mg/mL. (a) UC emission spectrum at different excitation powers; (b) log-log plot of emission intensity versus pump power density in UCNPs@ Acriflavine system.
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