燃烧法合成Eu^(2+)、Dy^(3+)、Nd^(3+)共掺杂的硅酸盐长余辉发光材料Sr_2MgSi_2O_7和Sr_2ZnSi_2O_7  

Combustion Synthesis of Sr_2MgSi_2O_7 and Sr_2ZnSi_2O_7 in Silicate Afterglow Phosphors Activated by Eu^(2+),Dy^(3+) and Nd^(3+)

作　　者：徐咏钗[1] 宋华杰[1] 尹盛玉[1] 赵长亮[1] 陈栋华[1] 

机构地区：[1]中南民族大学化学与材料科学学院催化与材料科学湖北省重点实验室,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2007年第1期20-22,共3页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：湖北省自然科学基金重点资助项目(2001ABA009)

摘　　要：采用燃烧法在600~800℃合成了Sr2MgSi2O7:Eu2+、Dy3+、Nd3+,Sr2ZnSi2O7:Eu2+、Dy3+、Nd3+和Sr2ZnSi2O7:Eu2+、Dy3+蓝色长余辉发光材料,对材料进行了XRD、TEM、激发和发射光谱、余辉亮度及余辉衰减的测定.结果表明:稀土离子的掺杂对基质晶体结构没有影响,激发和发射光谱显示它们的光谱性质是Eu2+典型的4f-5d的跃迁所致,对Sr2ZnSi2O7:Eu2+、Dy3+材料,Nd3+的共掺杂有利于提高其余辉性能.Blue afterglow phosphors Sr2MgSi2O7: Eu2+,Dy3+,Nd3+,Sr2ZnSi2O7:Eu2+,Dy3+,Nd3+ and Sr2ZnSi2O7:Eu2+,Dy3+ were synthesized by combustion method at 600~800℃.The crystallization,particles sizes and luminescence properties of the sample have been investigated systematically by using powder X-ray diffraction, transmission electron microscopy,luminescence spectrophotometer and brightness meter.It is indicated the doping ions do not form new phase in the synthesis process.The luminescence comes from typical 4f-5d tr...

关 键 词：燃烧法 碱土硅酸盐 长余辉 发光 陷阱能级 

分 类 号：TB34[一般工业技术—材料科学与工程]