Upconversion Luminescence and Optical Studies of Nd~(3+) in Bismuth Borate Glasses

摘要

Neonymium doped bismuth borate glasses with composition 50Bi_2O_3 : (50-x)B_2O_3: xNd_2O_3 (where x = 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt quenching technique. The optical and upconversion luminescence properties of glasses were investigated. The nine absorption peaks were observed, correspond with Nd~(3+) energy level in glass. The optical band gap decreased with increasing Nd_2O_3 concentration due to the increase of non-bridging oxygen (NBOs) in glass matrix. The upconversion luminescence emission spectra shows peak at 393 nm, assign to ~4D_(3/2)→~4I_(11/2) transition.