Luminescence Property Of Novel Ce³⁺ Ions And SnO₂ Doped Glasses

In this work, the luminescence property of novel Ce3+ions and SnO2 doped glasses are investigated. The researches mainly focused on the luminescence property of Ce3+ions doped chacolgenide glasses, Ce3+ions doped and Ce3+/Tb3+ions codoped phosphate glasses, SnO2 doped and SnO2/RE ions or SnO2/Mn2+codoped phosphate glasses. The UV-visible absorption spectra, UV-visible excitation spectra and emission spectra were recorded. The results show that, under a 451 nm blue light excitation, the Ce3+ions doped chacolgenide glasses exhibit a broadband emission around 530 nm. The intensity of the luminescence increased with the increasing of the Ce3+ions or CsCl concentration in the glass matrix, the emission peak show a red shift with the decreasing of CsCl or the increasing of the atomic number of halides as well. Under a 303 nm excitation, the Ce3+ions single doped or Ce3+/Tb3+ codoped samples show two emission peaks of Ce3+ions while the red one was reported for the first time. Ce3+/Tb3+ions codoped glass samples show six emission peaks belong to Tb3+ ions, and the energy transfer from Ce3+ions to Tb3+ions was approved. SnO2 single doped glass show a broadband emission form 300 nm to 600 nm with a FWHM about 180 nm under a 267 nm excitation. In SnO2/Tm3+codoped glasses, SnO2 transfer the energy to Tm3+ions via a UC-DC process, as a result, the red emission of Tm3+ions increased while that of SnO2 keep constant. For SnO2/Eu3+codoped glasses, SnO2 transfer the energy to Mn2+ions directly, as a result, the emission of Mn2+ions increased while that of SnO2 decreased. SnO2/Mn2+ codoped samples show the both luminescence property of SnO2 and Mn2+ions under a 267 nm UV light. With the increasing of Mn2+ions concentration, the emission of SnO2 decreased while that of Mn2+increased. The emission peak of Mn2+ions shift to the longer wavelength at the same time. With the increasing of SnO2 concentration, both of the two emissions increased. The codoped glasses exhibit different light color with the variety of SnO2 or Mn2+concentration. Different luminescence intensity, light color and light temperature could be achieved via different proportion or concentration of SnO2 and Mn2+ ions.