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FEI BI1,* , JIAQI LI2, GUANGQING GAI1,* , XIANGTING DONG2,*
- Laboratory of Building Energy-Saving Technology Engineering, College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, China
La 2 O 2 S:Eu 3+ hollow nanofibers were successfully fabricated by sulfurization of the relevant La 2 O 3 Eu 3+ hollow nanofibers via double crucible method. The morphology and properties of the products were investigated in detail by X ray diffraction (XRD), scanning electron micro scope (SEM) and fluorescence spectrometer. La 2 O 2 S:Eu 3+ hollow nanofibers were pure hexagonal phase with space group P 3m1 and were hollow centered structure with the mean diameter of 100.87 ±12.89 nm. Emission spectra analysis manifested that La 2 O 2 S:Eu 3+ ho llow nanofibers emitted red emission at 624 nm attributed to 5D0→7F2 energy levels transition of Eu3+ ions. CIE analysis demonstrated that the emitting colors of La 2 O 2 S:Eu 3+ hollow nanofibers were located in the yellow and red regions and color tuned lumin escence can be obtained by changing doping concentration of Eu 3+ ions, which could be applied in the field of optical telecommunication and optoelectronic devices. The possible formation mechanism of La 2 O 2 S:Eu 3+ hollow nanofibers were also proposed..
Lanthanum oxysulfide, Luminescence, Hollow nanofibers, Electrospinning.
Submitted at: July 3, 2019
Accepted at: June 16, 2020
FEI BI, JIAQI LI, GUANGQING GAI, XIANGTING DONG, Synthesis and luminescence properties of La 2 O 2 S:Eu 3+ hollow nanofibers derived from La 2 O 3 :E u 3+ hollow nanofibers, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 5-6, pp. 272-279 (2020)
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