超声条件下溶胶-凝胶法制备CaSiO_3∶(Pb,Mn)发光材料的研究  

Preparation and properties of luminous material of CaSiO_3∶(Pb,Mn) by ultrasonic wave-assisted sol-gel method

作　　者：方敏[1] 杨良准[1] 刘超[1] 王秀英[1] 余锡宾[1] 

机构地区：[1]上海师范大学化学系,上海200234

出　　处：《化学研究与应用》2007年第2期140-144,共5页Chemical Research and Application

基　　金：上海科技发展基金资助项目(04JC14089和0452nm070)

摘　　要：采用溶胶-凝胶法并辅以超声技术制备了CaSiO3∶(Pb,Mn)发光材料,对合成物运用荧光光谱、DTA-TG、XRD、FTIR、TEM等手段进行了表征。研究了制备时的物料配比、超声时间及焙烧温度对样品发光强度的影响,找到了最佳的合成条件。结果表明,所得样品其荧光强度约为高温固相法样品的2倍,平均粒径则降低约300 nm。The luminous materials of CaSiO3： （Pb, Mn）are synthesized by sol-gel method and ultrasound technology. The properties of the phosphors were charaterized by luminescence speatrum, DTA-TG, XRD, FTIR and TEM. Effects of factors such as the synthetic material compositions, ultrasound time and annealed temperature on phosphorescent brightness of sample were studied and the optimum synthetic conditions were determined. The results show that,compared with the sample made by the high temperature solidstate reaction, the luminescent intensity of the CaSiO3 ： （Pb,Mn） sample increased by about 200% and the mean diameter of particles of the sample decreased by about 300nm.

关 键 词：溶胶-凝胶法 超声 发光材料 CaSiO3:(Pb Mn) 

分 类 号：O644[理学—物理化学]