Structural and luminescence characterization of a Dy/Tb co-doped borophosphate glass
Abstract
A new optical glass with the molar composition 20B2O3-50P2O5-10Li2O-9Al2O3-5ZnO-3Dy2O3-3Tb2O3 was obtained by melting-quenching technique comprising wet route raw materials preparation, and the structural and optical characteristics of the glass were investigated by different experimental techniques. The amorphous nature was confirmed by X-ray diffraction (XRD) and the thermal stability was assessed by differential thermal analysis (DTA). Information about the defects of the co-doped glass as well as about the elemental compositional homogeneity was revealed by scanning electron microscopy/energy dispersive spectrometry (SEM/EDS). Structural information provided by Fourier Transform Infrared (FTIR) and Raman spectroscopy indicated metaphosphate structure of the glass together with boron oxide mostly in [BO3] Q2 units and also Psbnd Osbnd B bonds. Ultraviolet-visible (UV-Vis) absorbance, photoluminescence (PL), photoluminescence excitation (PLE) and time resolved photoluminescence (TRPL) spectra and luminescence decay curve were investigated systematically. Energy transfer process between Dy3+ and Tb3+ ions and its influence on luminescent properties were discussed.
- Publication:
-
Journal of Non Crystalline Solids
- Pub Date:
- December 2019
- DOI:
- 10.1016/j.jnoncrysol.2019.119719
- Bibcode:
- 2019JNCS..52619719C
- Keywords:
-
- Borophosphate glasses;
- Dy<SUP>3+</SUP> Tb<SUP>3+</SUP> dopants;
- Thermal properties;
- FTIR Raman spectroscopy;
- Luminescence