Doping / Photoluminescence / Sol Gel Process / Silica / Luminescence / Optical Properties / Optical physics / Excited states / Stokes Shift / Sol gel / Optical Properties / Optical physics / Excited states / Stokes Shift / Sol gel
Materials Engineering / Raman Spectroscopy / Heat Treatment / Sol Gel Process / Silica / Luminescence / Thermal Treatment / Sol gel / Luminescence / Thermal Treatment / Sol gel