848274.fig.005
Figure 5: Excitation spectrum (a), (  nm) of Mn2+ in (Sr0.98, Mn0.02)2SiO4 and emission spectrum (b), (  nm) of Dy3+ in (Sr0.99, Dy0.01)2SiO4. Excitation (c), (  nm) and emission (d), (  nm) spectra of Mn2+ in (Sr0.97, Mn0.02, Dy0.01)2SiO4.