Preparation and luminescence properties of Lu₂O₃:Eu³⁺ nanofibers by sol–gel/electrospinning process

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• 作者：Xue Li ; Min Yu ; Zhiyao Hou ; Wenxin Wang ; Guogang Li ; Ziyong Cheng ; Ruitao Chai ; Jun Lin
• 关键词：Electrospinning ; Lu₂O₃ ; Europium ; Luminescence ; Nanofibers
• 刊名：Journal of Colloid and Interface Science
• 出版年：2010
• 出版时间：1 September 2010
• 年：2010
• 卷：349
• 期：1
• 页码：166-172
• 全文大小：1142 K

文摘

One-dimensional Lu₂O₃:Eu³⁺ nanofibers have been prepared by a combination method of sol–gel process and electrospinning technology. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric and differential thermal analysis (TG–DTA), scanning electron microscopy (SEM), energy-dispersive X-ray spectrum (EDS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL), and cathodoluminescence (CL) spectra were used to characterize the samples. The XRD, FT-IR and TG–DTA results show that Lu₂O₃:Eu³⁺ samples crystallize at 900 °C. SEM images indicate that as prepared precursor samples and those annealed at 900 °C present uniform fiberlike morphology. After being heated at 900 °C, the diameters of fibers decrease greatly, ranging from 90 to 180 nm. TEM image further manifests that the as-formed Lu₂O₃:Eu³⁺ nanofibers consist of nanoparticles (the crystallite size is about 16.5 nm). Under the short wavelength ultraviolet irradiation and the low-voltage electron beam excitation, Lu₂O₃:Eu³⁺ nanofibers all exhibit typical red (⁵D₀–⁷F_J) emission. The optimum doping concentration of Eu³⁺ in the Lu₂O₃ nanofibers also has been investigated.