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采用水热法合成了不同铽离子掺杂量的BaZrO3粉体,采用XRD、SEM、FTIR、荧光光谱仪等检测方法对样品的结构、形貌及光学性能进行表征.对部分水热产物进行煅烧处理,研究温度对其发光性能的影响.结果表明,水热产物均为立方钙钛矿结构,铽离子掺杂进入BaZrO3晶格,占据B位Zr的位置.样品的微观形貌为粒度分布较为均匀的球体.不同铽掺杂量得到的BaZrO3球体在244 nm光激发下均观察到了来自基体的宽带发射和Tb3+的特征发射峰,且在Tb3+掺杂浓度为5mol%附近峰值最大.温度对发光性能影响显著,随着煅烧温度的升高,发光强度逐渐减弱.

参考文献

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