MO-Y2O3-B2O3:Re(M=Mg,Sr;Re=Eu,Tb)的真空紫外光谱特性

采用高温固相反应法合成了掺杂Eu3 及Tb3 的17MO-7.88Y2O3-75B2O3样品,研究了它们的光谱特性,结果表明,MO-T2O3-B2O3基质在真空紫外(VUV)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Eu3 的5D0→7FJ(J=1,2,3,4)跃迁的590和613 nm强发射峰;MgO-Y2O3-B2O3:Eu中Sr的引入使材料体系在147 nm附近的吸收和在613 nm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147 nm附近的基质吸收外,还有对应于Tb3 的4f75d→4f8跃迁位于170,178,195,204,225 nm左右的一组谱峰,两者相互叠加使得材料在真空紫外区(120～220 nm)内都有很好的吸收.

VUV Spectral Properties of MO-Y2O3-B2O3: Re (M = Mg, Sr; Re = Eu,Tb)

Eu and Tb doped 17MO-7.88Y2O3-75B2O3 samples were prepared by the solid state reaction. VUV excitation properties and luminescence 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 --> 7F(J) (J = 1, 2, 3, 4) emission transition of Eu3+ when MgO-Y2O3-BO3 : Eu was energized by the VUV radiation (147 nm). By the introduction of Sr into MgO-Y2O3-BO2O3: Eu absorption peaking at 147 nm and red emission peaking at 613 nm are enhanced strongly. Besides the host absorption band of MgO-Y2O3-B2O3 : Tb, there existed strong absorption band peaking at 170, 178, 195, 204, 225 nm corresponding to the 4f(8)-4f(7) 5d transition of Tb3+; emission spectra showed strong emission peaks at 491, 547, 590, 621 nm corresponding to the 5D4 --> 7F(J) (J = 6, 5, 4 and 3) emission transition of Tb3+.