期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 540, 期 -, 页码 179-183出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.06.025
关键词
Compound; Nanofibers; Electrospinning; Luminescence
资金
- Zhejiang Provincial Natural Science Foundation of China [LY12E02007]
- Scientific Research Fund of Zhejiang Provincial Education Department [Y201019068]
- Zhejiang Innovation Program for Graduates [YK2010053]
- Emerging Artists Talents Scheme Research Fund of Zhejiang Province [2010R406067]
- Young Researchers Foundation of Key Laboratory of Advanced Textile Materials and Manufacturing Technology (Ministry of Education), Zhejiang Sci-Tech University [2011QN01]
Samarium ions doped strontium molybdate (SrMoO4:Sm3+) nanofibers (NFs) were fabricated by a simple electrospinning process. The obtained SrMoO4:Sm3+ NFs are composed of scheelite-type tetragonal SrMoO4 phase, and the NFs have an average diameter of ca. 90 nm. Under 275 nm ultraviolet (UV) excitation, the NFs show an orange-red fluorescent property symbolized by a characteristic emission (606 nm) resulting from the (4)G(5/2) -> H-6(7/2) energy level transition of Sm3+. And the photoluminescence (PL) emissi on intensity of the SrMoO4:Sm3+ NFs is superior to that of the nanoparticles (NPs) counterpart under the same doping concentrations. The effect of Sm3+ concentrations on the (4)G(5/2) -> H-6(7/2) emission intensity was also investigated. The result reveals that the concentration quenching will occur when the Sm3+ content exceeds 2 at.%. In other words, the SrMoO4:Sm3+ NFs have an optimal luminescent performance under such a doping concentration. (C) 2012 Elsevier B.V. All rights reserved.
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