低温燃烧法制备SrMgAl10O17：Eu^2＋,Er^3＋高亮度蓝光荧光粉及发光性能研究  

Low-temperature combustion synthesis and luminescent properties of SrMgAl_(10)O_(17):Eu^(2+), Er^(3+) high brightness blue phosphors

作　　者：刘丹[1] 梁培[1] 王乐[1] 徐国堂[1] 刘阳[1] 李晓艳[1] 董前民[1] 黄杰[1] 

机构地区：[1]中国计量学院,光学与电子科技学院,杭州310018

出　　处：《物理学报》2013年第19期463-468,共6页Acta Physica Sinica

基　　金：国家自然科学基金青年基金(批准号:61006051,61177050);浙江省自然科学基金(批准号:Y407370,Y1110777);浙江省重点科技创新团队(批准号:2010R50020)资助的课题~~

摘　　要：采用低温燃烧法合成SrMgAl10O17:Eu2+及SrMgAl10O17:Eu2+,Er3+蓝色发光材料,通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)和荧光光谱仪(PL)等测试手段对所得样品进行表征.XRD及SEM测试结果表明:利用低温燃烧法合成SrMgAl10O17材料具有较高的结晶度,且微量的稀土元素掺杂不会破坏其晶体结构;PL测试结果表明:SrMgAl10O17:Eu2+荧光粉在300—390 nm范围内可以被有效的激发,该波长范围与近紫外LED芯片匹配,发射光谱分布在430—520 nm之间,发射峰位于460 nm,属蓝光发射材料.共掺Er3+可显著增强SrMgAl10O17:Eu2+的发光强度,且当Er3+的掺杂浓度为4%时,样品的发光强度最大,较单掺Eu2+时样品的发光强度高出54.9%,表明Er3+对Eu2+的发光具有良好的敏化作用,该敏化作用的机理可以利用能量传递原理进行解释.The SrMgAl10O17：Eu^2＋ and SrMgAl10O17：Eu^2＋, Er^3＋ blue phosphors were synthesized by the combustion synthesis method. Their crystal structures and luminescent properties were analyzed by X-ray diffraction （XRD）、scanning electron microscope （SEM） and photoluminescence spectra, respectively. The XRD and SEM results indicate that the sample is well-crystallized in the combustion procedure, and its crystal structure has not changed when doped with low concentrations of rare-earth ions. PL results show that the phosphor of SrMgAl10O17：Eu^2＋can be effectively excited by near UV LED chip with a broad emission spectrum extending from 430 nm to 520 nm, and has main peaks located at 460nm. Furthermore, the sample of the luminous intensity is the largest when the Er2＋, Er^3＋co-doped concentration is 4%, and the emission intensity of Sr0.95MgAl10O17：0.05Eu^2＋, Er^3＋phosphor is significantly enhanced 54.9%higher than that of SrMgAl10O17：Eu^2＋phosphor. It is indicated that Er^3＋has good sensitization effect for Eu^2＋in luminescence, and this can be explained by the theory of energy transfer.

关 键 词：低温燃烧法 SrMgAl10O17 蓝光荧光粉 敏化作用 

分 类 号：TN104.3[电子电信—物理电子学]