Luminescence properties of Pr3+ ion doped Mg-picromerite Tutton salt

Abstract In the present work we focused on the elaboration of Mg-picromerite-type Tutton salt doped with Pr 3+ by the slow evaporation method at room temperature. The obtained crystals, with prismatic morphology, were characterized by means of X-ray diffraction (XRD), luminescence, infrared (IR) spectroscopy and scanning electron microscopy (SEM), and the results showed a high purity phase of a monoclinic system with the space group P2 1 /a . Dehydration and decomposition into langbeinite and potassium sulfate of this salts were done by means of thermal analysis measurements as well as XRD experiments at high temperature. Pr 3+ exhibits a maximum of absorption in the blue region with the transition 3 H 4 → 3 P 2 (445 nm). Luminescence study showed that this material possesses numerous emission bands from the visible (VIS) to the near-infrared (NIR) region, which make it interesting to be used in a wide range of optical applications.