白光LED用荧光粉SrAl_2Si_2O_8∶Eu^(2+)合成条件优化研究  

Study on Optimization of Synthesis Conditions of Phosphor SrAl_2Si_2O_8∶Eu^(2+) for White LED

作　　者：王飞[1,2] 田一光 张乔[3] WANG Fei;TIAN Yi-guang;ZHANG Qiao(Experimental Center of Anhui Sanlian University, Hefei 230601,China;College of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China;College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China)

机构地区：[1]安徽三联学院实验中心,合肥230601 [2]安徽大学化学化工学院,合肥230601 [3]温州大学化学与材料工程学院,温州325035

出　　处：《人工晶体学报》2017年第10期1992-1998,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(20771086);安徽省高校自然科学研究重点项目(KJ2016A893);安徽三联学院科研项目(2015Z001,2013Z001);安徽三联学院质量工程项目(15zlgc008);国家级大学生创新创业项目(201710959055)

摘　　要：Sr_(0.975)Al_2Si_2O_8∶Eu_(0.025)^(2+)系列荧光粉利用高温固相法合成,系统研究了预烧温度、预烧时间、烧成温度和助溶剂硼酸的量对荧光体晶体结构和发光性能的影响;研究结果表明,各试样均为单斜晶系SrAl_2Si_2O_8,荧光体的X射线衍射强度、荧光体的晶粒尺寸及荧光体的发射强度,均随着预烧温度、预烧时间、烧成温度和助溶剂硼酸量的增加,呈先增加后减小的变化趋势。当预烧温度为1000℃,预烧时间为150 min,烧成温度为1250℃,助溶剂硼酸的量为6wt%,制得的荧光体Sr_(0.975)Al_2Si_2O_8∶Eu_(0.025)^(2+)的发光强度最强,优化了合成条件。A series of luminescence phosphors Sr0.75Al2Si208Z:L0.025e prepared by solid-state reaction,the effect of the fisrt firing temperature(Tx),the fisrt firing time(t),the second firing temperature(T2)and the concentration of flux H3B03(W)on the spectrum characteristics and structure of the sample was investigated.The results show that the samples are monoclinic SrAl2Si208,emission intensity,grain size and intensity of X-ray diffraction of the phosphor increase with Tx,t,T2and W,show the trend of increasing first and then decreasing.When the Tx-1000,t=150min,T2=1250Tl,W=6wt%,the synthesis of phosphor Sr0.75Al2Si208-Eu0.025inescence intensity is strongest,the synthesis conditions are optimized.

关 键 词：LED SrAl2Si208:Eu2+ 合成条件 

分 类 号：O614.613[理学—无机化学]