Novel layered niobate phosphors SrBaNb4O12:Re3+ (Re= Eu, Dy, Sm and Pr): Crystal structure, electronic structure and luminescence property investigation

Abstract

Abstract A series of rare earth ions doped novel niobate phosphors SrBaNb4O12:Re3+ (Re= Eu, Dy, Sm and Pr) were successfully developed through solid state reaction. The phase composition and morphology were investigated through X-ray structure refinement, scanning electron microscopy and energy dispersive spectrometer. The layered crystal structure of SrBaNb4O12 and the local lattice environment of Re3+ were discussed in detail. The electronic structure property and density of states were calculated based on density functional theory. To investigate the characteristic luminescence property, the excitation and emission spectra, fluorescence lifetimes and Commission Internationale de l’E′clairage (CIE) chromaticity index of SrBaNb4O12:Re3+ (Re= Eu, Dy, Sm and Pr) series phosphors were determined as well.