Research Article
Upconversion Luminescence Properties of Y2O3:Yb, Er and Y2O2S:Yb, Er Nanoparticles Prepared by Complex Precipitation
Figure 5
The upconversion emission intensity as a function of pump power for the three samples: (a) Y2O3:0.8% Er, (b) Y2O3:1% Yb, 0.8% Er, and (c) Y2O3:11% Yb, 0.8% Er.
| (a) |
| (b) |
| (c) |