Research Article
Upconversion Luminescence Properties of Y2O3:Yb, Er and Y2O2S:Yb, Er Nanoparticles Prepared by Complex Precipitation
Figure 6
The upconversion spectra of Er3+ (0.8 mol%), Yb3+ (8 mol%) codoped Y2O2S and Y2O3 samples under the 980 nm excitation.