采用水热法在不同pH条件下制备出不同晶粒度GdVO4∶ Eu3+荧光粉.利用X射线衍射、扫描电镜和荧光光谱对GdVO4∶ Eu3+的结构、形貌和发光性能进行了研究.讨论了溶液的pH对晶粒尺寸的影响.结果表明:合成的样品均为单一的GdVO4四方晶相,纳米晶的一次性平均粒径分布在19～41 nm.反应溶液pH为6时,合成样品平均晶粒尺寸最小.激发带主要来自于V-O的电荷迁移带,发射光谱的主发射峰来自于5D0→7F2电偶极跃迁,不同pH值条件下制备的样品的电荷迁移带、发光强度、发射峰相对强度有所不同.
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