Luminescence and Optical Properties of Li₂O₃:Gd₂O₃:B₂O₃:Sm₂O₃ Glasses System

Abstract

The samarium-doped lithium-gadolinium borate [60Li 2 O:10Gd 2 O 3 :(30-x) B 2 O 3 :xSm 2 O 3 ] (LGBO:Sm 3+ ) glasses have been melted and quenched in stainless plate under an air atmosphere. Some physical and optical properties within wavelength concerned and photoluminescence of the LGBO:Sm 3+ glasses were measured and discussed. The density of glasses dropped until 0.10 mol% and tends to increase after that point, while molar volume of the glasses tends to increase with concentration of Sm 2 O 3. . In absorption spectra, there are 2 obvious peaks in UV-VIS range and 6 peaks in NIR range indicating the Sm 3+ in glass matrices. The sharpness of a peak, in the absorption spectra, also increases with concentration of the dopant. The 7 obvious peaks in excitation spectra represent the transitions from the ground state 6 H 5/2 to various excited states. Furthermore, The emission spectra were observed under 404 nm light from the Xenon compact arc lamps, and showed the concentration quenching effect (CQE) at 1.00 mol% of Sm 3+ . Additional, The lifetimes showed decreasing trend with concentration of Sm 2 O 3. . As the result, The LGBO:Sm 3+ glass doped with 1.00 mol% of Sm 3+ gives the highest result for luminescence properties.