A novel method for the synthesis of YAG:Ce phosphor
来源期刊：Journal of Rare Earths2009年第6期
论文作者：高文贵 胡运生 庄卫东 张书生 刘元红 何华强
文章页码：886 - 890
摘 要：YAG:Ce phosphor was synthesized by a novel simple method,wherein the admixture of three raw materials（Y2O3,α-Al2O3 and CeO2） were first acidified by diluted nitric acid to prepare a precursor,followed by a high temperature heating treatment of the obtained precursor under reductive atmosphere.Through XRD measurement and SEM observation,it was found that Y2O3,one of the raw material,was firstly dissolved into the diluted nitric acid,and then recrystallized on the surface of both α-Al2O3 and CeO2 to form a novel nano-flaky hierarchical architectures with the crystalline structure of yttrium nitrate hydroxide hydrates,which makes all the precursor more homogeneous than the admixture of the raw materials from simple mechanical blending method.In the following heating process,the obtained homogeneous admixtures with hierarchical architectures could easily transform into uniform YAG:Ce phosphor.The resulted YAG:Ce phosphor exhibited higher emission intensity than the sample synthesized from mechanical mixing raw materials.
高文贵，胡运生，庄卫东，张书生，刘元红，何华强
National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,and Grirem Advanced Materials Co.,Ltd.
摘 要：YAG:Ce phosphor was synthesized by a novel simple method,wherein the admixture of three raw materials（Y2O3,α-Al2O3 and CeO2） were first acidified by diluted nitric acid to prepare a precursor,followed by a high temperature heating treatment of the obtained precursor under reductive atmosphere.Through XRD measurement and SEM observation,it was found that Y2O3,one of the raw material,was firstly dissolved into the diluted nitric acid,and then recrystallized on the surface of both α-Al2O3 and CeO2 to form a novel nano-flaky hierarchical architectures with the crystalline structure of yttrium nitrate hydroxide hydrates,which makes all the precursor more homogeneous than the admixture of the raw materials from simple mechanical blending method.In the following heating process,the obtained homogeneous admixtures with hierarchical architectures could easily transform into uniform YAG:Ce phosphor.The resulted YAG:Ce phosphor exhibited higher emission intensity than the sample synthesized from mechanical mixing raw materials.
关键词：
