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四川大学本科生论文Eu2++Mn2+共掺杂磷酸盐发光性能的研究本科生毕业论文题目Eu2++Mn2+掺杂磷酸盐发光性能研究学院材料科学与工程学院专业无机非金属材料工程学生姓名学号年级指导教师二Ο年六月一日四川大学本科生论文Eu2++Mn2+共掺杂磷酸盐发光性能的研究四川大学本科生论文Eu2++Mn2+共掺杂磷酸盐发光性能的研究1Eu2++Mn2+掺杂磷酸盐发光性能研究无机非金属材料专业学生指导老师：摘要：近年来节能的观念已经进入生活，紫外激发单一基质荧光粉受到了广泛的关注。磷酸盐荧光材料热稳定性、化学稳定性好，合成方法简单，采用高温固相法制备了Eu2++Mn2+掺杂磷酸盐荧光材料，用紫外-荧光光谱仪、XRD对其性能进行了表征。研究了煅烧气氛，碱金属离子，碱土金属离子，Eu2+离子Mn2+离子浓度对荧光粉发光性能的影响。结果表明，当Eu2+离子浓度在4%,Mn2+离子的浓度为12%时，荧光粉的发光性能最好，碱金属离子(Na+，K+)增强了荧光粉蓝色光的光强，降低了红橙光的发光强度。碱土金属离子中Sr2+离子对荧光粉的蓝光发射峰具有增强作用，Ca2+离子对荧光粉的蓝色发射峰具有减弱作用，对红橙发射峰具有增强作用。当在空气气氛中煅烧时Eu2+离子Mn2+离子被氧化，不能得到所需荧光粉。关键词：稀土离子荧光粉磷酸盐共掺杂四川大学本科生论文Eu2++Mn2+共掺杂磷酸盐发光性能的研究2StudyofEu2++Mn2+DopedPhosphatePhosphorsLuminescentPropertiesInorganicNonmetallicMaterialsEngineeringStudent:Advisor:Summary：Inrecentyears,theconservationofenergyhasenteredthelife,asinglematrixphosphorsexcitationbyultravioletwidespreadattention.Phosphatephosphormaterialhasagoodthermalstabilityandchemicalstability,synthesismethodissimple,high-temperaturesolidphasepreparedEu2+andMn2+dopedphosphatephosphormaterial.TheperformanceofphosphorcharacterizedbyUV-fluorescencespectroscopy,XRD.Studiedluminescentpropertiesofthephosphorbeaffectedbycalcinationatmosphere,alkalimetalions,alkalineearthmetalions,Eu2+andMn2+ionsconcentration.Theresultsshowthatthebestperformancelight-emittingphosphoriswhentheEu2+concentration4%,Mn2+concentrationof12%.Alkalimetalion(Na+,K+)enhancestheintensityofbluelightphosphor,reducingthered-orangelightemissionintensity.AlkalineearthmetalionsSr2+onthephosphorhaveeffectthatblueemissionpeakwithenhanced,Ca2+onthephosphorhaveeffectthatblueemissionpeakshavediminishedroleofthered-orangeemissionpeakswithanenhancedrole.Whenthecalcinationinair，Eu2+andMn2+areoxidized,notgetthephosphorsweneed.Keyword:Rare-earthionsPhosphorPhosphateDoping四川大学本科生论文Eu2++Mn2+共掺杂磷酸盐发光性能的研究3目录第一章前言...................................................................................................................................................41.1几种基质荧光材料...........................................................................................................................41.1.1铝酸盐荧光材料....................................................................................................................41.1.2硅酸盐荧光材料....................................................................................................................41.2.3磷酸盐荧光材料....................................................................................................................41.2共掺杂正磷酸盐荧光材料的组成及性质.......................................................................................41.3研究现状..........................................................................................................................................51.3.1Ce3+;Eu3+共掺杂荧光材料.....................................................................................................51.3.2Eu3+Ga3+共掺杂荧光材料......................................................................................................51.3.3Dy3+;Eu2+共掺杂荧光材料.....................................................................................................61.3.4Eu2+，Mn2+共掺杂荧光材料.................................................................................................61.4荧光材料的制备方法.......................................................................................................................71.4.1水热法....................................................................................................................................71.4.2溶胶-凝胶法...........................................................................................................................71.4.3共沉淀法................................................................................................................................81.4.4高温固相法............................................................................................................................81.4.5其他合成方法........................................................................................................................91.5研究思路和内容...............................................................................................................................91.5.1研究思路................................................................................................................................91.5.2研究内容...............................................................................................................................9第二章实验部分.........................................................................................................................................102.1实验原料及仪器设备.....................................................................................................................102.2实验工艺流程图.............................................................................................................................102.3Eu2++Mn2+掺杂磷酸盐发光粉的制备.........................................................................................112.4样品的表征...................................