Microwave synthesis and characterization of new red long afterglow phosphor Sr_3Al_2O_6:Eu  

作　　者：张平 徐明霞 郑振太 孙波 张艳辉 

机构地区：[1]School of Materials Science and Engineering,Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education,Tianjin University,Tianjin 300072,China [2]Hebei University of Technology,Tianjin 300130,China [3]Department of Materials Chemistry,College of Chemistry,Nankai University,Tianjin 300071,China

出　　处：《中国有色金属学会会刊：英文版》2006年第B01期423-425,共3页Transactions of Nonferrous Metals Society of China

基　　金：Project (50072014) supported by the National Natural Science Foundation of China

摘　　要：Nanoparticles of red long afterglow phosphor Sr3Al2O6: Eu2+ were prepared by microwave irradiation method at a power of 680 W and a processing time of 15 min. The phosphors nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fluorescence spectrophotometer techniques. The results reveal that the samples are composed of single Sr3Al2O6 phase. The resultant nanoparticles show small size (80?100 nm) and spherical shape. The excitation and emission spectra indicate that excitation broad band chiefly lies in visible range and the nanoparticles emit much strong light at 612 nm under around 473 nm excitation. And the long afterglow phosphorescence of Sr3Al2O6 doped with Eu2+ was observed in the dark with naked eye after the removal of the excitation light. The effect of Eu2+ doping concentrations of the samples on the emission intensity is studied systematically. Furthermore, the microwave method requires a very short heating-time and the energy consumption.Nanoparticles of red long afterglow phosphor Sr3Al2O6： Eu^2＋ were prepared by microwave irradiation method at a power of 680 W and a processing time of 15 min. The phosphors nanoparticles were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and Fluorescence spectrophotometer techniques. The results reveal that the samples are composed of single Sr3Al2O6 phase. The resultant nanoparticles show small size （80-100 nm） and spherical shape. The excitation and emission spectra indicate that excitation broad band chiefly lies in visible range and the nanoparticles emit much strong light at 612 nm under around 473 nm excitation. And the long afterglow phosphorescence of Sr3Al2O6 doped with Eu^2＋ was observed in the dark with naked eye after the removal of the excitation light. The effect of Eu^2＋ doping concentrations of the samples on the emission intensity is studied systematically. Furthermore, the microwave method requires a very short heating-time and the energy consumption.

关 键 词：Sr3Al2O6 红色长余辉磷光粉 微波辐射法 纳米粒子 合成 表征 

分 类 号：TB383.1[一般工业技术—材料科学与工程]