喷雾干燥-高温热处理两步法制备YAG∶Ce^(3+)荧光粉  

YAG:Ce^(3+) phosphor prepared by spray drying then heat treatment at high temperature

作　　者：陈少云[1] 曾人杰[1] 陈毅彬[1] 郜盛夏[1] 

机构地区：[1]厦门大学材料学院,福建厦门361005

出　　处：《功能材料》2010年第11期1944-1947,共4页Journal of Functional Materials

基　　金：福建省科技重大专题资助项目(2005HZ02-2)

摘　　要：以喷雾干燥-高温热处理两步法,由含聚合铝阳离子的前驱体悬浊液,制得了YAG∶Ce3+荧光粉。用XRD、SEM、荧光光谱等研究了热处理温度、前驱体悬浊液浓度对YAG晶相的形成、粉末颗粒形貌及发光性能的影响。发现前驱体悬浊液浓度由0.03mol/L提高到0.09mol/L时,热处理后所得荧光粉颗粒尺寸增大,并趋近球形;前驱体悬浊液浓度为0.09mol/L,热处理温度从1300℃提高到1500℃时,荧光粉相对亮度提高。YAG∶Ce3+粉末900℃热处理2h可获YAG相;所制备的YAG∶Ce3+荧光粉颗粒无空心,团聚程度低。YAG：Ce3＋ phosphor was prepared by spray drying and then heat treatment at high temperature from a suspension including aluminum polycation.Effects of the heat treatment temperature and the suspension concentration on YAG phase formation,the particle morphology and the luminescence properties of the phosphor were analyzed by XRD,SEM and fluorescence spectra.Results showed that the particle size increased and the morphology tended to spherical when the suspension concentration increased from 0.03mol/L to 0.09mol/L.The relative brightness of phosphors increased when the heat treat temperature increased from 1300℃ to 1500℃ for 2hat the suspension concentration of 0.09mol/L.The YAG phase could be obtained after heat treatment at 900℃ for 2h.No hollow had been observed inside the particle of YAG：Ce3＋ phosphor and the powder was low aggregation.

关 键 词：固相反应 烧结 晶体长大 白光LED 钇铝石榴石 

分 类 号：TB321[一般工业技术—材料科学与工程]