Y_2O_3：Eu发光材料的快速合成及表征

Rapid synthesis and characterization of phosphor Y_2O_3:Eu

在硝酸钇和硝酸铕的混合溶液中加入尿素，于较低炉温（≤５００℃）下快速合成了Ｙ２Ｏ３：Ｅｕ的红色发光材料．测定了它的发射光谱、Ｘ－射线衍射光谱、粒度分布曲线及比表面，并用扫描电镜观察它的形貌及用透射电镜摄取它的电子衍射圈，结果表明：用该法制得的样品具有粒度分布均匀、不结团、亚超细等特征．

he red phosphor of Y2O3:Eu has been synthesized rapidly at lower temperature(≤500℃) by adding urea to the mixed solution of yttrium nitrate and europium nitrate.Its emission spectrum, particle size distribution and surface area (BET) have been measured. It ha been characterized by X-ray diffraction analysis,scanning electron microscopy (SEM) and selected area diffraction pattern(SADP).The results show that the powder obtained exhibits a normal size distribution, with properties of sub-fine and having no appreciable aggregation.