Synthesis and luminescent properties of (Y,Gd)BO3:Eu coated with MgF2

Abstract: (Y,Gd)BO3:Eu powders were prepared by conventional solid-reaction method. Surface-modified (Y,Gd)BO3:Eu powders with MgF2 were prepared by the emulsion method. The best preparing way is that MgCl2 was dropped to the mixture of NH4F and (Y,Gd)BO3:Eu powders to prepare surface-modified (Y,Gd)BO3:Eu powders. The interaction between F− ions and the phosphor particles was discussed. It is shown that the structures of surface-modified (Y,Gd)BO3:Eu powders were measured by XRD. The luminescent properties of (Y,Gd)BO3:Eu powders with MgF2 are researched. [Copyright &y& Elsevier]