Optical characterization of Eu3+ and Tb3+ ions doped cadmium lithium alumino fluoro boro tellurite glasses

This article reports on the development and spectral results of Eu3+ and Tb3+ ions doped cadmium lithium alumino fluoro boro tellurite (CLiAFBT) glasses in the following composition.40TeO2–30B2O3–10CdO–10Li2O–10AlF3 (Host glass)(40 − x)TeO2–30B2O3–10CdO–10Li2O–10AlF3–xEu2O3(40 − x)TeO2–30B2O3–10CdO–10Li2O–10AlF3–xTb4O7where x = 0.25, 0.50, 0.75, 1.0, 1.25 mol%.Glass amorphous nature and thermal properties have been studied using the XRD and DSC profiles. From the emission spectra of Eu3+:glasses, five emission transitions have been observed at 578 nm, 592 nm, 612 nm, 653 nm, 701 nm and are assigned to the transitions 5D0 → 7F0, 7F1,7F2, 7F3 and 7F4, respectively, with λexci = 392 nm (7F0 → 5L6). In case of Tb3+:glasses, four emission transitions (5D4 → 7F6,7F5, 7F4 and 7F3) are observed at 488 nm, 543 nm, 584 nm and 614 nm, respectively, with λexci = 376 nm. Decay curves and energy level diagrams have been plotted to evaluate the life times and to analyze the emission mechanism.

This article reports on the development and spectral results of Eu3+ and Tb3+ ions doped cadmium lithium alumino fluoro boro tellurite (CLiAFBT) glasses in the following composition.40TeO2–30B2O3–10CdO–10Li2O–10AlF3 (Host glass)(40 − x)TeO2–30B2O3–10CdO–10Li2O–10AlF3–xEu2O3(40 − x)TeO2–30B2O3–10CdO–10Li2O–10AlF3–xTb4O7where x = 0.25, 0.50, 0.75, 1.0, 1.25 mol%.Glass amorphous nature and thermal properties have been studied using the XRD and DSC profiles. From the emission spectra of Eu3+: glasses, five emission transitions have been observed at 578 nm, 592 nm, 612 nm, 653 nm, 701 nm and are assigned to the transitions 5D0 → 7F0, 7F1,7F2, 7F3 and 7F4, respectively, with λexci = 392 nm (7F0 → 5L6). In case of Tb3+:glasses, four emission transitions (5D4 → 7F6,7F5, 7F4 and 7F3) are observed at 488 nm, 543 nm, 584 nm and 614 nm respectively with λexci = 376 nm. Decay curves and energy level diagrams have been plotted to evaluate the life times and to analyze the emission mechanism.Figure optionsDownload as PowerPoint slideResearch highlights
► Eu3+ and Tb3+:CLiAFBT glasses were prepared by melt quenching method.
► We have observed a bright red emission from Eu3+:CLiAFBT glasses.
► A bright green emission was observed from Tb3+:CLiAFBT glasses.
► These Eu3+ and Tb3+:CLiAFBT glasses are used as the novel optical materials.