Figure 4
Schematics of the populating and upconversion luminescence processes for the blue, green and red emissions in the Mg2+ ions doped Ho3+/Yb3+/Tm3+/LiNbO3 system under 980 nm excitation.
Figure 4 | Scientific Reports
Schematics of the populating and upconversion luminescence processes for the blue, green and red emissions in the Mg2+ ions doped Ho3+/Yb3+/Tm3+/LiNbO3 system under 980 nm excitation.
