无机材料学报2013，Vol.28Issue(8)：885-890,6.DOI:10.3724/SP.J.1077.2013.12654
静电纺丝制备La3Si8O4N11∶Ln(Ln=Ce3+、Sm3+)纳米纤维及其发光性能研究
Synthesis and Luminescence Properties of La3Si8O4N11∶Ln (Ln =Ce3+, Sm3+)Nanofibers via Electrospinning
摘要
Abstract
Ce3+-doped and Sm3+-doped La3Si8O4N11 nanofibers and microbelts were prepared by the electrospinning.The obtained samples were characterized by XRD,FE-SEM,EDS and PL.XRD patterns of sample nitrided at 1400℃for 9h were crystallized well and assigned to JCPDF card of the monoclinic La3Si8O4N11 crystal and the sample maintained La3Si8O4N11 phase after doping Ce3+ or Sm3+ ions.The obtained sample not only keeps the morphology of nanofiber but also assembles as film.Under ultraviolet excitation (343 nm),the emission spectra of Ce3+-doped La3Si8O4N11sample consists a board peak near 430 nm and a shoulder at 460 nm,it results from Ce3+ 5d-4f transition.The dacay curve of Ce3+-doped La3Si8O4N11 nanofibers exhibits double-exponential decay curve.The fast and slow decay lifetimes of Ce3+-doped La3Si8O4N11 nanofibers are about 8.27 and 32.72 ns.The emission spectra of Sm3+-doped La3Si8OaN11 shows four sharp peaks situated at 575,600,610 and 650 nm when excited at 409 nm results from Sm3+ 4f-4f transition.关键词
静电纺丝/荧光/氧氮化物Key words
electrospinning/ luminescence/ oxynitride分类
通用工业技术引用本文复制引用
丁狄,王宏志,李耀刚,张青红..静电纺丝制备La3Si8O4N11∶Ln(Ln=Ce3+、Sm3+)纳米纤维及其发光性能研究[J].无机材料学报,2013,28(8):885-890,6.基金项目
国家自然科学基金(51072034) （51072034）
高等学校博士点基金(20110075130001) （20110075130001）
上海市科委纳米科技专项(12nm0503900) （12nm0503900）
National Natural Science Foundation of China (51072034) （51072034）
Specialized Research Fund for the Doctoral Program of Higher Education of China (20110075130001) （20110075130001）
Specialized Research Fund for Nano Technology of Shanghai Science and Technology Committee (12nm0503900) （12nm0503900）
