Mg3Bo3F3:Mn2+, R3+(R=Eu、Sm、Dy)的阴极射线发光

本文研究了具有长余辉发光特性的红色Mg3BO3F3:Mn2+,R3+(R=Eu,Sm,Dy)的阴极射线发光性能,以及R3+离子的掺杂对Mg3BO3F3:Mn2+的发射光谱、色坐标等的影响.

CATHODOLUMINESCENCE PREPERTIES OF Mg3BO3F3:Mn2+, R3+ PHOSPHORS

The long persistence phosphor of Mg3Bo3F3:Mn2+ doped with rare earth ions R3+ (Eu3+,Sm3+ and Dy3+)was synthesized by solid-state reaction at 1100℃. The optimum concentrations ot R3+ for preparating samples were examined. The cathodoluminescence propertiers of the longer persistence (τ=210ms) phosphors Mg3Eo3F3:Mn2+,R3+ were investigated.It is found that Eu3+ and Sm3+ ions affect the emission spectrum and color coordinates of Mg3Bo3F3:Mn2+ phosphor. The narrow emissions ot Eu3+ and Sm3+ ions overlap on a broad emission band of Mn2+ ion in these phosphors. From Fig.3 and Fig.4 it can be seen that the narrow emissions of Eu3+ and Sm3+ ions in Mg3Bo3F3:Mn2+ are located at 613nm corresponding to 5D0-7F2 transition of Eu3+ and at 651nm of Sm3+ 4G5/2-6H9/2 transition respectively.The brightness of red Mg3Bo3F3 Mn,R3+ phosphors depends linearly on the acceleration voltage.