Photoluminescence of dysprosium doped antimony-magnesium-strontium-oxyfluoroborate glasses

Abstract Dysprosium (Dy 3+ )-doped antimony-magnesium-strontium-oxyfluoroborate (B 2 O 3 MgF 2 SrO Sb 2 O 3 Dy 2 O 3 , BMFSrSbD), glasses were synthesized by traditional melt-quenching method. The synthesized samples have been analyzed by X-ray diffraction, optical absorption and fluorescence techniques for deriving various characteristic properties. Emission spectra of Dy 3+ : samples were exhibit three well resolved emission bands at around 482, 575 and 666 nm which originated from the 4 F 9/2 → 6 H 15/2, 4 F 9/2 → 6 H 13/2 and 4 F 9/2 → 6 H 11/2 transitions upon excitation of wavelength at 452 nm. Decay curves of the 4 F 9/2 level of Dy 3+ ion were display mono-exponential at low Dy 3+ concentration (0.1 mol%) and deviated to non-exponential behavior at high concentration of Dy 3+ ions (≥ 0.5 mol%). Lifetime of the 4 F 9/2 level was decreased with increase of Dy 3+ ions concentration. Chromaticity coordinates (x,y) of Dy 3+ :BMFSrSbD samples were evaluated and represented in CIE 1931 chromaticity diagram, appear in the whitish-yellow region. The results suggest that these glasses could be utilized as a potential candidate for the development of display devices and lasers at a wavelength of 575 nm.