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

La2BaZnO5:Nd3+ 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 La2BaZnO5:Nd3+ phosphors are observed at room temperature due to f–f transition of Nd3+ ion. The optimum Nd3+ doped concentration is ∼0.03. Lifetimes of La1.97BaZnO5:0.03Nd3+ 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 Nd3+ ion. La2BaZnO5:Nd3+ material can be applied to powerful solid-state lasers as high efficient light sources. - Graphical abstract: PL spectra of La2BaZnO5:Nd3+ phosphor in the visible and near-infrared regions and their corresponding to PLE at room temperature. - Highlights: • La2BaZnO5:Nd3+ phosphor is synthesized. • PL spectrum is observed in the visible region. • PL spectrum is observed in the near-infrared region