Spectroscopic studies of Sm3+/Dy3+ co-doped lithium boro-silicate glasses

Sm3+ + Dy3+ co-doped lithium boro-silicate glasses were prepared by the melt quenching technique. These glasses were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and spectroscopic tools to understand the effect of Sm3+ + Dy3+ ions on various properties of the glasses. XRD confirmed that the prepared glasses were amorphous in nature. The FE-SEM analysis revealed the homogeneity and authenticated the various added glass constituents. On excitation with 403 nm the Sm3+ glasses gave a reddish orange emission (H-4(9/2)) while the Dy3+ glasses gave both blue (H-6(15/2)) and yellow (H-6(13/2)) emissions. The emission spectra of the Sm3+ + Dy3+ co-doped lithium boro-silicate glasses showed the emission bands of Sm3+ ions along with the Dy3+ ions. The detailed analysis confirmed that, there was no energy transfer between the Sm3+ and Dy3+ ions. The emission color could be tuned by using different excitation wavelengths for glasses prepared for the present study. (C) 2016 Elsevier B.V. All rights reserved.