Glasses with the Na2Oâ??ZnOâ??P2O5 composition and doped with single CeO2, Sm2O3, ormixed dopants were melted and studied.\nCollective optical, photoluminescence, and FT-infrared spectral studies were carried out. CeO2-doped glasses show two extra\nUV absorption bands due to Ce4+ and Ce3+ ions while Sm2O3-doped samples reveal pronounced peaks collected into two\nsegments from 367 to 472nm and from 950 to 1623nm which are characteristic of absorption from Sm3+ ions.The mixed dopants\nglasses show combined UV-visibleâ??near-IR absorption peaks due to cerium (Ce4+, Ce3+) ions and samarium (Sm3+) ions. The\nphotoluminescence spectra (PL) of the single CeO2-doped and Sm2O3-doped glasses and even the mixed dopant sample reveal\nluminescence spectra after excitation which are characteristic of the rare-earth ions. The intensities for both excited or emitted\npeaks are found to increase with the increase of the rare-earth percent. FTIR spectra of the glasses show pronounced vibrational\npeaks related to phosphate groups (Q2 and Q3 units) in accordance with the P2O5 percent (70mol %).
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