White light emission from Dy-doped ZnO + BiO + BaF + BO + TeO glasses: Structural and spectroscopic properties.

The ZnO + BiO + BaF + BO + TeO (ZnBiBaBFTe) host glass was prepared by melt quenching technique with the aim of achieving white light emission from Dy ions. Their structural and spectroscopic properties were systemically investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible absorption, emission spectra and decay times. Judd-Ofelt (JO) parameters (Ω) evaluated from absorption spectrum were utilized to calculate the radiative parameters for F level of Dy ions.