Fabrication and Characterization of LaOBr:Eu³⁺ Luminescent Nanofibers

Abstract:

LaOBr:Eu³⁺ nanofibers have been successfully fabricated by electrospinning combined with a double-crucible bromination technique using cetyltrimethylammonium bromide (CTAB) powers as bromine source. The products were characterized in detail by X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS) and fluorescence spectroscopy. The results indicate that LaOBr:Eu³⁺ luminescent nanofibers are tetragonal in structure with space group P4/nmm. The diameter of LaOBr:Eu³⁺ luminescent nanofibers is ca. 150 nm. Fluorescence spectra analysis shows that under the excitation of 302-nm ultraviolet light, the LaOBr:Eu³⁺ nanofibers exhibit red emission centering at 620 nm, which is attributed to the ⁵D₀→⁷F₂ energy levels transitions of Eu³⁺ ions.

• Periodical: Advanced Materials Research (Volume 1118)
• Pages: 92-96
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1118.92
• Online since: July 2015
• Authors: Wen Sheng Yu, Chun Song Zhu, Qian Li Ma, Wen Wen Ma, Jin Xian Wang, Xiang Ting Dong*
• Keywords: Electrospinning, LaOBr, Luminescence, Nanofiber, Phosphor, Rare Earth

References

[1] D Brown, Halides of the lanthanides and actinides, Wiley-Interscience, London, (1968).

[2] P Hagenmuller, Inorganic solid fluorides-chemistry and physics, Academic Press, London, (1985).

[3] J Holsa, E Sailynoja, P Ylha, P Porcher, P Deren, W Stek, Analysis of the crystal structure and optical spectra of stoichiometric SmOF, Journal of Physical Chemistry 100 (1996) 14736-14744.

DOI: 10.1021/jp960348+

[4] J Holsa, M Leskela, L Niinisto, Concentration quenching of Tb3+ luminescence in LaOBr and Gs2O2S phosphors, Materials Research Bulletin 14 (1979) 1403-1409.

DOI: 10.1016/0025-5408(79)90082-5

[5] J Yang, J Gong, H Fan, L Yang, The structure and luminescence characteristics of LaOBr: Tb3+(Dy3+), Journal of Materials Science 40 (2005) 3725-3728.

DOI: 10.1007/s10853-005-3313-9

[6] D Y Wang, W P Zhang, M Yin, Fluorescence spectroscopy of Er3+: LaOBr prepared by NH4Br solid state reaction, Optical Materials 27 (2004) 605-608.

DOI: 10.1016/j.optmat.2004.07.011

[7] W P Zhang, Q D Su, Q L Mao, The study of energy transfer between Ce3+-Tb3+ and Er3+-Tm3+ in LaOBr by photoacoustic and photoluminescent spectra, Chinese Journal of Luminescence 17 (1996) 293-298.

[8] J Lee, Q W Zhang, F Saito, Mechanochemical synthesis of LaOX(X = Cl, Br) and their solid state solutions, Journal of Solid State Chemistry 160 (2001) 469-473.

DOI: 10.1006/jssc.2001.9276

[9] N Imanaka, K Okamoto, G Y Adachi, A chlorine gas sensor based on the combination of Mg2+ cation conducting and O2- anion conducting solid electmlytes with lanthanum oxychloride as an auxiliary electrode, Electrochemistry Communications 3 (2001).

DOI: 10.1016/s1388-2481(00)00147-8

[10] Z M Huang, Y Z Zhang, M Kotaki, S Ramakrishna, A review on polymer nanofibers by electrospinning and their applications in nanocomposites, Composites Science and Technology 63 (2003) 2223-2253.

DOI: 10.1016/s0266-3538(03)00178-7

[11] Q L Ma, W S Yu, X T Dong, J X Wang, G X Liu, Janus nanobelts: fabrication, structure and enhanced magnetic-fluorescent bifunctional performance, Nanoscale 6 (2014) 2945-2952.

DOI: 10.1039/c3nr05472a

[12] Q L Ma, J X Wang, X T Dong, W S Yu, G X Liu, Fabrication of magnetic-fluorescent bifunctional flexible coaxial nanobelts by electrospinning using a modified coaxial spinneret, ChemPlusChem 79 (2014) 290-297.

DOI: 10.1002/cplu.201300262

[13] W W Ma, W S Yu, X T Dong, J X Wang, G X Liu, Electrospinning preparation and up-conversion luminescence properties of LaOBr: Er3+ nanofibers and nanoribbons, Chemical Engineering Journal 244 (2014) 531-539.

DOI: 10.1016/j.cej.2014.02.005

[14] W S Yu, Q L Kong, J X Wang, X T Dong, G X Liu, Fabrication of Er3+-doped LaOCl nanostructures with upconversion and near-infrared luminescence performances, Journal of Materials Science: Materials in Electronics 25 (2014) 46-56.

DOI: 10.1007/s10854-013-1547-x