Synthesis of well oil-dispersible BaYF5:Yb3+/Er3+ nanocrystals with green upconversion fluorescence

被引：1
|
作者：
孙家跃 [1 ]
先建波 [1 ]
夏志国 [2 ]
杜海燕 [2 ]
机构：
[1] College of Chemistry and Environmental Engineering,Beijing Technology and Business University
[2] School of Materials Sciences and Technology,China University of Geosciences
来源：
Journal of Rare Earths | 2010年 / 28(S1)卷 / S1期
关键词：
oil-dispersible; nanocrystals; upconversion; rare earths;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
Nearly monodisperse,regular-shaped and well oil-dispersible tetragonal BaYF5:0.2Yb3+/0.02Er3+ nanocrystals(NCs) were synthesized in water-ethanol-oleic acid-sodium oleate system.The as-obtained NCs exhibited bright upconversion(UC) fluorescence under the 980 nm excitation.Blue(2H9/2-4I15/2),green((2H11/2,4S3/2)-4I15/2) and red(4F9/2-4I15/2) transitions were observed.The results indicated that the relative intensity of green to red increased gradually with increasing power density,which were seldom in the previous work.Therefore,the UC properties and mechanism were studied in detail.
引用
收藏
页码：219 / 221
页数：3
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