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Facile electrospinning fabrication and photoluminescence of La2O2S:Tb3+ nanobelts derived from La2O3: Tb3+ nanobelts

FEI BI1, LIYANG WANG1,* , JIAQI LI2, GUANGQING GAI1, XIANGTING DONG2

Affiliation

  1. Laboratory of Building Energy-Saving Technology Engineering, College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
  2. Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, China

Abstract

Novel structures of La2O2S:Tb3+ nanobelts were successfully prepared by electrospinning combined with double-crucible method. X-ray powder diffraction (XRD) analysis indicates that La2O2S:Tb3+ nanobelts were pure hexagonal phase with space group P-3m1. Scanning electron microscope (SEM) analysis reveals that La2O2S:Tb3+ nanobelts have coarse surface with the mean width of 2.86±0.39 μm. Photoluminescence (PL) analysis manifests that La2O2S:Tb3+ nanobelts emitted green emission at 544 nm attributed to 5D4→ 7 F5 energy levels transition of Tb3+ ions. CIE analysis demonstrated that the emitting colors of La2O2S:Tb3+ nanobelts were located in the green region and color-tuned luminescence can be obtained by changing doping concentration of Tb3+ ions, which is considered to be a promising candidate for application in LEDs. The possible formation mechanism of La2O2S:Tb3+ nanobelts was also proposed. More importantly, the design conception and construction technology are of universal significance to fabricate other oxysulfides nanobelts.

Keywords

La2O2S:Tb3+, Luminescence, Nanobelts, Electrospinning.

Citation

FEI BI, LIYANG WANG, JIAQI LI, GUANGQING GAI, XIANGTING DONG, Facile electrospinning fabrication and photoluminescence of La2O2S:Tb3+ nanobelts derived from La2O3: Tb3+ nanobelts, Optoelectronics and Advanced Materials - Rapid Communications, 15, 1-2, January-February 2021, pp.79-85 (2021).

Submitted at: Nov. 12, 2019

Accepted at: Feb. 12, 2021