以NaVO3,Y2O3,Eu2O3为原料,采用水热法在不同pH值(pH =6.5,8.2,10.1,13)条件下合成了具有不同形貌与颗粒尺寸的YVO4∶ Eu3+纳米荧光粉.利用XRD,TEM和荧光光谱仪对样品的结构、形貌和光致发光性能进行了研究.实验结果表明:所合成样品均为具有四方锆石结构的YVO4∶Eu3+纳米晶,溶液pH值对所合成样品的形貌与颗粒大小均有明显影响,而且光致发光性能与样品的形貌有关,YVO4∶Eu3棒状纳米荧光粉因具有较高结晶度而具有较高的荧光强度.
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