Luminescent properties of Tb 3+ and Gd 3+ ions doped aluminosilicate oxyfluoride glasses

Abstract

Tb 3+ and Gd 3+ ions doped lithium–barium–aluminosilicate oxyfluoride glasses have been prepared. The transmission, emission and excitation spectra were measured. It has been found that those Tb 3+-doped lithium–barium–aluminosilicate oxyfluoride glasses exhibit good UV-excited luminescence. The luminescence intensity of Tb 3+ ion increases for those (Tb 3+, Gd 3+)-codoped glasses. Energy transfer process from Gd 3+ ion to Tb 3+ ion is indicated.