NaLn 4-X (SiO 4 ) 3 F∶xRE 3+ (Ln=La, Gd; RE=Tb, Dy, Sm, Tm)荧光材料的发光性能

A series of NaLn4- x( SiO4)3F∶ xRE3 +( Ln = La,Gd; RE = Tb,Dy,Sm,Tm) phosphors were synthesized by the conventional solid-state reaction at 950 ℃ for 2 h. The samples were characterized by X-ray diffraction( XRD) and photoluminescence( PL) spectra. The experimental results indicate that all the obtained-samples are pure hexagonal phase. Under UV light excitation,the doped rare earth ions( Tb3 +,Dy3 +,Sm3 +and Tm3 +) phosphor give blue-green,white,orange,and blue emission,respectively.