硅酸盐学报

橙红色荧光粉K2Bi1–xZr(PO4)3:xSm3+的电子结构与荧光性能

作者：刘小星1 赵丹2

单位：(1. 河南理工大学材料科学与工程学院河南焦作 454000 2. 河南理工大学化学与化工学院河南焦作 454000)

分类号：O483.31

出版年,卷(期):页码：2020,48(1):0-0

DOI：

摘要：

采用常规固相反应合成了无水钾镁矾基荧光粉材料钐(+3)激活磷酸锆铋钾，并用X射线衍射、紫外–可见漫反射光谱、密度泛函理论计算(DFT)和光致发光谱等方法进行了研究。DFT计算表明，磷酸锆铋钾是一种具有间接带隙的绝缘体，带宽为4.26 eV，适合作为荧光主体材料。该荧光粉可被340～425 nm范围内近紫外光有效地激发，发射出一系列钐(+3)的特征发射峰。主要包括562、600、647 nm附近3个发射带，分别对应于钐(+3)离子4G5/2→6HJ (J = 5/2, 7/2, 9/2) 的能级跃迁。通过改变x值制备了不同钐(+3)浓度的样品，并比较了其发射强度，得出钐(+3)的最佳掺杂浓度为10%(摩尔分数)。因此，钐(+3)激活磷酸锆铋钾材料可作为橙红色荧光粉在照明和显示领域具有一定的应用价值。

基金项目：

国家自然科学基金(21201056)。

作者简介：

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