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Title of Journal: J Mater Sci Mater Electron

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Abbravation: Journal of Materials Science: Materials in Electronics

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Springer US

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DOI

10.1016/j.arr.2005.09.001

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1573-482X

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Fabrication of YSubscript2/SubscriptOSubscrip

Authors: Lei Han Mengmeng Pan Yao Lv Yuting Gu Xiaofei Wang Dan Li Qingling Kong Xiangting Dong
Publish Date: 2014/11/01
Volume: 26, Issue: 2, Pages: 677-684
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Abstract

Y2O3Eu3+ hollow nanofibers were prepared by calcination of the electrospun PVP/YNO33 + EuNO33 composite nanofibers and then Y2O2SEu3+ hollow nanofibers were successfully synthesized by sulfurization of the asobtained Y2O3Eu3+ hollow nanofibers via a doublecrucible method using sulfur powders as sulfur source The samples were investigated in detail by Xray diffractometry XRD scanning electron microscopy SEM energy dispersive Xray spectroscopy and fluorescence spectroscopy XRD analysis shows that the Y2O2SEu3+ hollow nanofibers are pure hexagonal phase with the space group of P bar3 m1 SEM observation indicates that asprepared Y2O2SEu3+ nanofibers are obvious hollowcentered structure with the mean outer diameter of 184 ± 26 nm Under the excitation of 260nm ultraviolet light the Y2O2SEu3+ hollow nanofibers exhibit red emissions of predominant emission peaks at 628 and 618 nm originated from 5D0 → 7F2 energy levels transitions of Eu3+ ions The luminescent intensity of Y2O2SEu3+ hollow nanofibers is remarkably increased with the increase of doping concentration of Eu3+ ions and reaches a maximum at 3 mol  of Eu3+ ions The emitting colors of the samples are located in the red region in CIE chromaticity coordinates diagram The possible formation mechanism of Y2O2SEu3+ hollow nanofibers is also proposed This preparation technique could be applied to prepare other rare earth oxysulfide hollow nanofibersThis work was financially supported by the National Natural Science Foundation of China NSFC 50972020 51072026 Specialized Research Fund for the Doctoral Program of Higher Education 20102216110002 20112216120003 the Science and Technology Development Planning Project of Jilin Province Grant Nos 20130101001JC 20070402 the Science and Technology Research Project of the Education Department of Jilin Province during the eleventh fiveyear plan periodUnder Grant No 2010JYT01 Key Research Project of Science and Technology of Ministry of Education of China Grant No 207026

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