White light emission from Dy3+ion doped boro-tellurite glass potential for optical and thermoluminescence material applications

초록

This research focuses on the synthesis and characterization of (35-x) TeO2: 30B2O3: 20BaO: 10ZnO: 5La2O3: xDy2O3 (x is 0.0, 0.1, 0.5, 1.0, and 1.5 mol%) glasses. X-ray diffraction analysis confirmed that the glass was amorphous. Investigation of vibration properties of various glass networks using Fourier transform infrared spectroscopy. In addition, the UV-vis-NIR spectrometer recorded the absorption spectra of a number of peak values. The glass samples exhibited strong photoluminescence (PL) spectra with two prominent emission bands at 482 nm and 576 nm, corresponding to the characteristic transitions of Dy3+ ion. The highest luminescence efficiency of Dy3+ ion was observed at a concentration of 1 mol%. In the prepared glasses, the PL obtained from different concentrations of Dy3+ ion is almost close to the white light region, as shown in the CIE 1931 chromaticity diagram. Furthermore, the thermoluminescence (TL) parameters were calculated, including the maximum temperature (Tm), high-temperature half-width (delta), low-temperature half-width (tau), total half-intensity width (omega), activation energy (E), and frequency factor (S). The developed glasses show promise for use in thermoluminescence dosimetry (TLD) and white light-emitting diodes (WLEDs) based on the results.

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