Preparation and the luminescent properties of Tb3+-doped Gd2O3 fluorescent nanofibers via electrospinning

被引：61

作者：

Du, Pingfan ^{[1
,2
]}

Song, Lixin ^{[1
]}

Xiong, Jie ^{[1
]}

Xi, Zhenqiang ^{[2
]}

Jin, Dalai ^{[2
]}

Wang, Longcheng ^{[2
]}

机构：

[1] Zhejiang Sci Tech Univ, Minist Educ, Key Lab Adv Text Mat & Mfg Technol, Hangzhou 310018, Peoples R China

[2] Zhejiang Sci Tech Univ, Ctr Mat Engn, Hangzhou 310018, Peoples R China

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 03期

关键词：

OXIDE NANOTUBES; HYDROTHERMAL SYNTHESIS; NANOCRYSTALS; NANORODS;

D O I：

10.1088/0957-4484/22/3/035602

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tb3+-doped Gd2O3 (Gd2O3:Tb3+) nanofibers were prepared via a simple electrospinning technique using poly(ethylene oxide) (PEO) and rare-earth acetate tetrahydrates (Ln(CH3COO)(3)center dot 4H(2)O (Ln = Gd, Tb)) as precursors. The obtained nanofibers have an average diameter of about 80 nm and are composed of pure cubic Gd2O3 phase. A possible formation mechanism for the nanofibers is proposed on the basis of the experimental results, which reveals that PEO acts as the structure directing template during the whole electrospinning and subsequent calcination process. The luminescent properties of the nanofibers were investigated in detail. The nanofibers exhibit a favorable fluorescent property symbolized by the characteristic green emission (545 nm) resulting from the D-5(4) -> F-7(5) transition of Tb3+. Concentration quenching occurs when the Tb3+ concentration is 3 at.%, indicating that the Gd2O3: Tb3+ nanofibers have an optimum luminescent intensity under such a doping concentration.

引用

页数：5

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