Fig. 6. (Color online) (a) Excitation and emission spectra of 6 mol% Eu³⁺ doped CaTiO₃ powders and (b) energy level structure of the trivalent europium ion (with wavelengths for CaTiO₃:Eu³⁺). The inset shows luminescence photographs.

New Phys.: Sae Mulli 2022;72:504~511 https://doi.org/10.3938/NPSM.72.504

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