采用传统高温固相方法制备了Gd0.97Nb1-xVxO4∶Eu0.03 (x=0.2,0.4,0.6,0.8和1)红色荧光粉.利用X射线粉末衍射对Gd0.97Nb1-xVxO4∶Eu0.03粉末进行了结构分析.研究了室温下该荧光粉的激发光谱和发射光谱特性.实验结果表明,这种荧光粉分别在315nm和395.5nm紫外光的激发下,Gd3+和Eu3+的掺杂浓度一定时,样品的发射光谱随着x值的增加红光发射(λ=619nm)强度逐渐变强,x=0.8时最强.研究了激活剂的浓度不变,而NbO43-离子和VO43-离子的浓度变化的条件下粉末的光谱性质.在激发光谱中,在200~320nm范围中出现了非常宽的谱带.这种荧光粉是一种可能应用于白光LED上的红色荧光材料.
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