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共沉淀法合成制备Ce³⁺掺杂Lu₃Al₅O₁₂纳米粉体

Synthesis Study of Lu₃Al₅O₁₂（Ce） Nanoscaled Powder by Co-precipitation

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【Author】 XIE Jian-Jun1,SHI Ying1,HU Yao-Ming2,CHEN Qi-Wei3,SHI Jian-Lin3(1.School of Materials Science and Engineering,Shanghai University,Department of Electronics and Information Materials,Shanghai 200072,China;2.Research Center of Analysis and Measurement,Shanghai Fudan University,Shanghai 200433,China;3.Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China)

【机构】上海大学材料科学与工程学院电子信息材料系；复旦大学分析测试研究中心；中国科学院上海硅酸盐研究所；

【摘要】用碳酸氢铵作为沉淀剂,将硝酸镥、硝酸铝和硝酸铈配成混合溶液,采用反滴定共沉淀及低温煅烧前驱体的方法制备Lu3A l5O12(Ce)纳米发光粉体.采用热分析(TG-DTA)、傅立叶红外光谱(FTIR)、X射线衍射(XRD)、透射电镜(TEM)和光致发光(PL)等分析测试方法对Lu3A l5O12(Ce)粉体制备过程中的物理化学变化及粉体的激发发射发光性能进行了研究.结果表明,采用反滴定共沉淀法制备工艺,经过1000℃煅烧2h,可以得到晶粒尺寸为30nm左右,仅有轻微团聚,单一石榴石相的Lu3A l5O12(Ce)粉体.并且在1000℃处理得到的粉体的光致发光最强.更多还原

【Abstract】 Ce3+-doped Lutetium aluminum garnet Lu3Al5O12 phosphors were prepared by an anti co-precipitation from mixing solution of lutetium,aluminum and cerium nitrates using the ammonium hydrogen carbonate as precipitate,followed by the calcination at low temperatures.TG-DTA,FTIR,XRD,TEM and Photoluminescence were used to characterize the as-prepared phosphors.The calcining temperature has distinctly influence on the particle size and the photoluminescence of the prepared Lu3Al5O12(Ce) powders.The resulted Lu3Al5O12(Ce) powder calcined at 1000℃ for 2h has an average particle size of 30nm.And its photoluminescence is the strongest among the powders calcined in the range from 850℃ to 1200℃.更多还原