Optical Characterization of Zinc Lithium Bismuth Borate Glasses Doped With Tb~(3+) for Novel Applications

摘要

Rare-earth (Tb~(3+)) ions doped zinc lithium bismuth borate (ZLiBiB) glasses have been prepared by melt quenching method. From the FTIR spectrum, the functional groups have been identified. From the measurements of X-ray diffraction (XRD), differential scanning calorimeter (DSC) profiles of these glasses have been carried out. In case of Tb~(3+):ZLiBiB glasses emission transitions such as ~5D_4→ ~7F_6 (489 nm), ~5D_4→ ~7F_5 (545 nm), ~5D_4→ ~7F_4 (584 nm) and ~5D_4→ ~7F_3 (622 nm) have been identified. Among these, the transition at 542 nm has shown a bright green emission. The emission mechanism of Tb~(3+) doped ZLiBiB glasses has been explained in terms of energy level diagram.