White emission from NaO-BaO-Bi₂O₃-SiO₂ Glass system Doped with Dy³⁺

The effect of Dy³⁺ ions on the physical, optical and luminescence properties of (40-x)SiO2: 25Na₂O: 10Bi₂O₃: 25BaO: xDy₂O₃ where x = 0.0, 0.1, 0.5, 1.0, 1.5 and 2.0 % mol by concentration melt-quenching at 1200°c. The results demonstrated the increases in the density and molar volume with the respect to the increase in the Dy³⁺ ions concentration. The glass absorbed bands in the near infrared and visible light region. The bands at 385 nm exhibited the highest excitation in visible light. The strongest band centre at 575 nm and the intensity of emission spectra increase up to 1.5 mol% of Dy³⁺ ion concentration and the decrease. The CIE 1931 chromaticity diagram exhibits that emissions from Dy³⁺ ions concentration in glass samples are white-light. All results indicate that the Dy³⁺ ions concentration in glass samples performs the intensity properties by using in the scintillator materials.