"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

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

FEI BI1,* , 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

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..

Keywords

Lanthanum oxysulfide, Luminescence, Hollow nanofibers, Electrospinning.

Submitted at: July 3, 2019
Accepted at: June 16, 2020

Citation

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)