The characterization and mechanism of energy transfer in Na2Mg(SO4)2: Ce phosphor co-doped by Dy, Mn and Tb

► PL and energy transfer mechanism in Na2Mg(SO4)2: X, Y (X=Ce; Y= Dy, Mn and Tb) phosphor. ► Preparation of phosphor by wet chemical method. ► The phosphor can be used as a lamp phosphor.