Effect of Gd3+-Sm3+ Energy Transfer on the Luminescence Properties of Ba-Na-B Glasses

Abstract

In this work, Sm3+-doped Ba-Na-B glasses with the varying of Gd3+ concentration from 0 to 10 mol% were prepared by melt-quenching technique. The absorption spectra show the highest peak at 402 nm (in UV-Vis region) and at 1227 nm (in NIR region). The emission spectra, excited by 402 nm excitation wavelength, show the emission peaks centered at 563, 600, 646 and 706 nm. The glass sample with 2.5 mol% of Gd3+ ions show the highest light yield. The emission spectra, excited by 275 nm for investigation of Gd3+ to Sm3+ energy transfer, also highest emission peaks observed at 311 and 622 nm for Gd3+ ions. The emission peaks observed at 563, 600, 646 and 706 nm for Sm3+ ions. The glass sample with 7.5 mol% of Gd3+ ions show the highest light yield because of the better energy transfer from Gd3+ to Sm3+ ions. The color of the emission from these glass samples are located in orange emission region when excited with 402 nm and located in reddish-orange emission region when excited with 275 nm.