Photoluminescence Properties of CaO-BaO-P2O5 Glass Systems Doped with Sm3+

Abstract

This paper reports on physical, optical and photoluminescence properties of Sm3+doped calcium barium phosphate (CaO: BaO: P2O5: Sm2O3) glass systems. The glass samples have been prepared by the melt-quenching technique at 1200°C. It was found that the density of glasses tended to increase with increasing of Sm2O3 concentration. While, the molar volume of glasses tended to decrease with increasing of Sm2O3 concentration higher than 0.1 mol%. The absorption spectra of glasses were recorded in the ultraviolet visible near infrared (UV-Vis-NIR) region. The absorption bands centered at 374, 402, 416, 438, 473, 527, 946, 1083, 1236, 1382, 1483, 1531 and 1977 nm, respectively have been observed. The emission spectra of glass samples centered at 561, 597, 643 and 704 nm corresponding to the energy levels from 4G5/2 to 6H5/2, 6H7/2, 6H9/2 and 6H11/2, respectively have been observed with 402 nm excitation wavelength.