静电纺丝技术制备一维LaPO_4:Eu^(3+)红光微纳米纤维  

Fabrication of One-dimensional LaPO_4:Eu^(3+) Micro-nanofibers by Electrospinning

作　　者：李珍[1] 耿加强[1] 柳巍[1] 

机构地区：[1]山东理工大学材料科学与工程学院,淄博255049

出　　处：《无机材料学报》2011年第3期271-274,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金(59783001)~~

摘　　要：采用静电纺丝技术制备了Eu3+掺杂的LaPO4微纳米纤维.通过扫描电镜(SEM),X射线衍射(XRD),热重-差热(TG-DTA)及荧光光谱(PL)对所得样品进行了表征.样品焙烧800℃后的XRD图谱与单斜LaPO4的标准卡片JCPDS-35-0731基本吻合;在波长为409 nm的紫外光激发下,发射光谱由Eu3+的5D0-7FJ(J=1,2,3,4)特征发射组成,5D0-7F2(在618 nm处)跃迁最强,表现为Eu3+的红色特征发射;LaPO4:Eu3+微纳米纤维中Eu3+的最佳掺杂浓度为5 mol%.Eu3+的光致发光衰减曲线符合单指数行为,其寿命(τ)为3.7ms.Eu3＋-doped LaPO4 micro-nanofibers were prepared by the electrospinning technology.Scanning electron microscope（SEM）,X-ray diffraction（XRD）,themogravimetry-differential thermal analysis（TG-DTA）,and photoluminescence spectra（PL） were used to characterize the obtained samples.XRD patterns indicate that the as-prepared micro-nanofibers are crystallized well at 800℃ and assigned to JCPDS-35-0731 of the monoclinic LaPO4 crystal.Upon excitation into the Eu3＋ at 409 nm,the emission spectrum of LaPO4： Eu3＋ micro-nanofibers is composed of 5D0 7FJ（J = 1,2,3,4） emission lines of Eu3＋,with the transition 5D0 7F2（at 618 nm） being the most prominent group,which is characterized by red emission.The optimum doping concentration of Eu3＋ is 5mol% in the LaPO4： Eu3＋ micro-nanofibers.The luminescence decay curve of LaPO4： Eu3＋ micro-nanofibers shows single exponential behavior,and the lifetime（τ） of Eu3＋ is about 3.7 ms.

关 键 词：静电纺丝 LaPO4:Eu3+微纳米纤维 荧光 

分 类 号：O061[理学]