Abstract
Luminescent one-dimensional Lu2O2S:Eu3+ fibers were successfully prepared via an electrospinning method followed by a subsequent two-step calcination process for the first time. Scanning electron microscopy (SEM) showed that the as-obtained samples present a fiber-like morphology with uniform size and the diameters of the fibers changed from microscale to nanoscale with the increase of Eu3+ concentration. The emission spectra indicated that the obtained Lu2O2S:Eu3+ fibers exhibited typical Eu3+ (5D0–7FJ) red emission under ultraviolet excitation and the concentration quenching effects occurred in the fibers composed of 3 mol% Eu3+. The decay kinetics behaviors of the Lu2O2S:Eu3+ fibers were investigated, which showed that the fibers composed of 3 mol% Eu3+ also had the longest lifetime. The spectral characteristics and Eu–O ligand behavior were discussed through Judd–Ofelt parameters such as intensity parameters (Ω2, Ω4), radiative transition probability (ARAD), radiative lifetime (τrad), and branching ratio (β0J). In addition, the energy-dispersive X-ray spectra (EDS), thermogravimetry-differential thermal analysis (TG-DTA) and the formation mechanism were also displayed in order to better understand the work.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
