用硝酸盐热分解法合成了单相粉末样品Gd1-xEuxAl3(BO3)4(0≤x≤1).研究了Eu3+在GdAl3(BO3)4中的紫外和真空紫外光谱性质.GdAl3(BO3)4:Eu3+中稀土离子占据非中心对称的格位,Eu3+在其中的特征发射以5Do→7F2电偶极跃迁为主.在147nm激发下GdAl3(BO3)4:Eu3+呈色坐标为(0.645,0.330)的强红光发射,说明是非常有前途的PDP用红色发光材料.在GdAl3(BO3)4:Eu3+的真空紫外光谱中观察到两个峰,158nm的激发带归属于BO3基团的吸收,258nm处的激发带为Eu3+→O2-的电荷转移跃迁带.在147nm激发下,GdAl3(BO3)4:Eu3+的红光发射强度随着Eu3+浓度的增加而减弱,而在258nm激发下随Eu3+浓度的增大Eu3+的红光发射增强,说明它们发光的机理不同.
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