Visible to near-infrared luminescence properties of Nd3+-doped La2BaZnO5 phosphor

La 2 BaZnO 5 :Nd 3+ phosphors are synthesized by a conventional high temperature solid state reaction method, and its crystal structure and luminescence properties are investigated. Photoluminescence bands peaking at ~496, 540, 630, 670, 905, 1070, and 1350   nm of La 2 BaZnO 5 :Nd 3+ phosphors are observed at room temperature due to f – f transition of Nd 3+ ion. The optimum Nd 3+ doped concentration is ~0.03. Lifetimes of La 1.97 BaZnO 5 :0.03Nd 3+ phosphor with 496 and 1070   nm monitoring wavelengths are ~280 and 250   µs, respectively. The luminescence mechanism is explained by using simplified energy lever diagram of Nd 3+ ion. La 2 BaZnO 5 :Nd 3+ material can be applied to powerful solid-state lasers as high efficient light sources .