Abstract
The photoluminescence, optical and physical properties of sodium borate (NB) doped with different concentrations of Dy3+ were determined and well discussed. The samples were prepared by the melt-quenching technique and characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. Photoluminescence and absorption spectra of NB glasses doped with different concentrations of Dy3+ are reported. Ten absorption bands with hypersensitive transition at 1272 nm (6F(11/2) -> H-6(9/2)) and two emission bands for the transitions at F-4(9/2) -> H-6(15/2) (blue color) and F-4(9/2) -> H-6(13/2) (yellow color) with an excitation of 330 nm have been recorded. A series of considerable physical properties (oscillator strengths, refractive index, ions concentration, polaron radius) was calculated for each dopant concentration.