第52卷第8期2023年8月人工晶体学报JOURNALOFSYNTHETICCRYSTALSVol.52No.8August,2023Sm3+掺杂0.96Na0.5Bi0.5TiO3-0.04CaTiO3陶瓷的制备及光致发光性能研究马春林,王梓珩,范雨香,胡颖,胡亚洲(淮阴师范学院物理与电子电气工程学院,淮安223300)摘要:采用固相烧结法制备了一系列Sm3+掺杂0.96Na0.5Bi0.5TiO3-0.04CaTiO3(NBT-0.04CT∶xSm3+,0.002≤x≤0.020)无铅陶瓷。通过X射线衍射仪表征样品的物相结构,所有样品均呈现单一钙钛矿结构。用荧光光谱仪测量样品的发光性能,样品在479nm处激发峰最强,可与白光LED合成中使用的蓝色LED芯片相匹配。发射主峰位于597nm(4G5/2→6H7/9),呈现强橙红色发光。NBT-0.04CT∶0.010Sm3+陶瓷在Sm3+掺杂NBT-0.04CT陶瓷中的发光性能最佳,且在278~473K陶瓷样品的发光性能呈现良好的热稳定性。结果表明,NBT-0.04CT∶xSm3+陶瓷在白光LED中具有广阔的应用前景。关键词:无铅陶瓷;0.96Na0.5Bi0.5TiO3-0.04CaTiO3;Sm3+掺杂;光致发光;热稳定性中图分类号:TQ174.1;TM282文献标志码:A文章编号:1000-985X(2023)08-1509-07PreparationandPhotoluminescencePropertiesofSm3+-Doped0.96Na0.5Bi0.5TiO3-0.04CaTiO3CeramicsMAChunlin,WANGZiheng,FANYuxiang,HUYing,HUYazhou(SchoolofPhysicsandElectronicandElectricalEngineering,HuaiyinNormalUniversity,Huai’an223300,China)Abstract:AseriesofSm3+-doped0.96Na0.5Bi0.5TiO3-0.04CaTiO3(NBT-0.04CT∶xSm3+,0.002≤x≤0.020)lead-freepiezoelectricceramicswerepreparedbyaconventionalsolid-statereactionmethod.ThephasestructuresofthesampleswerecharacterizedbyX-raydiffractometry,andallthesamplesshowasingleperovskitestructure.Thephotoluminescencepropertiesofthesamplesweremeasuredbyfluorescencespectrophotometer,andthesamplesshowthestrongestexcitationpeakat479nm,whichmatcheswellwiththeblueLEDchipusedinthewhiteLEDsynthesis.Thedominantemissionpeakislocatedat597nm(4G5/2→6H7/9),presentingstrongorange-redluminescence.NBT-0.04CT∶0.010Sm3+ceramicsshowsoptimalluminescenceperformancesamongtheSm3+-dopedNBT-0.04CTceramics,andsuperiorthermalstabilityofitsluminouspropertiesisachievedinthetemperaturerangefrom278Kto473K.TheresultsindicatethatNBT-0.04CT∶xSm3+ceramicshavepromisingapplicationsinwhiteLED.Keywords:lead-freeceramics;0.96N...
