Optimization of dysprosium ions doped borate glasses for photoluminescence applications

In this report, we present a comprehensive explanation of the luminescent features of Dy³⁺-ions doped Zinc Sodium Lead Borate (ZnNaPbB) glasses through various characterizations like UV–Vis-NIR, absorption and emission spectroscopy. The absorption spectra were used to determine the optical bandgap (E_opt) and Urbach energy (ΔE). The emission spectra are dominated by three peaks (strong yellow, blue and weak red) in the visible range at 481 nm, 575 nm and 664 nm. The CIE coordinates lie in the pure white region of the chromaticity diagram indicating that the as-prepared glasses have possible applications for optoelectronic devices.