Europium oxide has been doped into sodium borosilicate (NBS) glasses (8Na2O-32B2O3- 60SiO2- xEu2O3) at various concentration levels. The glass raw materials were calcined at 800°C and melted at 1380°C and transparent glasses with slightly red color were obtained by quenching the melt in air. Thermal analyses and other experimental results showed excellent glass forming capability with Tg around 480 to 520°C at various doping concentrations. A typical deformation temperature of the europium-doped NBS glasses is around 570-660°C with densities around 2.45 to 2.6 g/cm3. The doped NBS glasses were further heat-treated at 560°C for phase-separation. Scanning electronic microscopy (SEM), energy dispersive spectroscopy (EDS), thermomechanical analysis (TMA), optical absorption spectrometer and fluorescence emission spectrometer were used to explore properties of the glasses.
