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Fig. 4. (Color online) (a, b) Excitation and emission spectra of the Y2O3:Pr3+ powders at different Pr3+ doping concentrations; (c, d) excitation and emission spectra of the Y2O3:Pr3+ powders at different annealing temperatures. The inset shows luminescence photographs.
New Phys.: Sae Mulli 2021;71:568~573 https://doi.org/10.3938/NPSM.71.568
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