The structure and luminescence properties of Mn2+/Eu2+/Er3+-doped MgO-Ga2O3-SiO(2)glasses and glass-ceramics

摘要

The MgO-Ga2O3-SiO(2)glasses and glass-ceramics samples doped with Eu2+/Mn2+/Er(3+)and heated in reductive atmosphere were prepared by the sol-gel method. The structure, morphology and the luminescence properties were studied using X-ray diffraction, high-resolution transmission electron microscope, fluorescence spectra, and up-conversion emission. The luminescence characteristics of doped ions could be influenced by temperature and matrix component. The characteristic emission of Mn2+, Eu(2+)and Er(3+)were seen and the energy transfer efficiency from Eu(2+)to Mn(2+)was enhanced as Mn(2+)concentration was increased. In addition, the two-photon process was determined for the Er3+-doped samples.