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 P[sbnd]O[sbnd]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.
Original language | English |
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Article number | 119719 |
Journal | Journal of Non-Crystalline Solids |
Volume | 526 |
DOIs | |
Publication status | Published - 15 Dec 2019 |
Keywords
- Borophosphate glasses
- Dy Tb dopants
- FTIR Raman spectroscopy
- Luminescence
- Thermal properties