Figure 6

Excitation spectra of KCe0.019Gd0.981(PO3)4 for the emission wavelengths of (a) 342 nm (5d1→2F7/2 of Ce3+) and (b) 592 nm (6G7/2→6P7/2 of Gd3+). Labels in purple indicate the transitions of Gd3+ and labels in pink those of Ce3+.

Excitation spectra of KCe0.019Gd0.981(PO3)4 for the emission wavelengths of (a) 342 nm (5d1→2F7/2 of Ce3+) and (b) 592 nm (6G7/2→6P7/2 of Gd3+). Labels in purple indicate the transitions of Gd3+ and labels in pink those of Ce3+.