MO-Y_2O_3-B_2O_3:Re(M=Mg,Sr;Re=Eu,Tb)的真空紫外光谱特性

VUV Spectral Properties of MO-Y_2O_3-B_2O_3:Re(M=Mg,Sr;Re=Eu,Tb)

采用高温固相反应法合成了掺杂Eu^3＋及Tb^3＋的17MO-7．88Y2O3-7582O3样品，研究了它们的光谱特性，结果表明，MO-Y2O3一B2O3基质在真空紫外（ⅥⅣ）区有很强的吸收，MgO-Y2O3-B2O3：Eu在147nm真空紫外光激发下产生对应于Eu^3＋的^5D0→^7FJ（J=1，2，3，4）跃迁的59O和613nm强发射峰；MgO-Y2O3-B2O3：EuK中Sr的引入使材料体系在147nm附近的吸收和在613nm附近的发射获得明显增强；MgO-Y2O3-B2O3：Tb的真空紫外激发谱除在147nm附近的基质吸收外，还有对应于Tb^3＋的4f^5d→4f^8跃迁位于170，178，195，204，225nm左右的一组谱峰，两者相互叠加使得材料在真空紫外区（120-220nm）内都有很好的吸收。

Eu and Tb doped 17MO-7.88Y2O3-75B2O3 samples were prepared by the solid state reaction. VUV excitation properties and 1 properties under VUV excitation were studied. Excitation spectra exhibited high absorption in VUV region （120-220 nm）. There existed strong emission peaking at 591 and 613 nm corresponding to the ^5D0→^7FJ（J= 1, 2, 3, 4） emission transition of Eu^3＋ when MO-Y2O3-B2O3：Eu was energized by the VUV radiation（147 nm）. By the introduction of Sr into MO-Y2O3-B2O3 ：Eu absorption peaking at 147 nm and red emission peaking at 613 nm are enhaneed strongly. Besides the host absorption band of MO-Y2O3-B2O3 ：Tb, there existed strong absorption band peaking at 170, 178, 195, 204, 225 nm corresponding to the 4f^5→4f^7 5d transition of Tb^3＋ ; emission spectra showed strong emission peaks at 491, 547, 590,621 nm corresponding to the ^5D0→^7FJ（J=6, 5, 4 and 3） emission transition of Tb^3＋.