Photo and X-Rays Induced Optical Luminescence of Sm³⁺-Doped Bismuth Borate Glasses

Abstract

Samarium doped bismuth borate glasses with composition 66.7Bi2O3: (33.3-x)B2O3: x Sm2O3(where x = 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt quenching technique. The physical, optical, photoluminescence and X-rays luminescence properties were investigated. The densities and molar volumes were not found the relationship with the increasing samarium concentration. The photoluminescence emission spectra shows broad emission bands due to4G5/2→6HJ(J=5/2, 7/2, 9/2, 11/2) transitions when excited with 473 nm. The decay curves of4G5/2level exhibited single exponential behavior for all the concentrations and the measured lifetimes are found to depend strongly on samarium concentrations. The X-rays emission spectra were measured at the X-rays of intensity 100kV and current 1.5mA. The emission peaks observed at 569, 598, 641 and 705 nm. And the intensity of luminescence increase as samarium concentration increase.