Solvothermal Synthesis of Gd2O3 : Eu3+ Luminescent Nanowires. (24th May 2010)

• Record Type: Journal Article
• Authors: Liu, Guixia; Zhang, Song; Dong, Xiangting; Wang, Jinxian
• Other Names: Whitby Raymond Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2010(2010)
• Publication Date: 2010-05-24
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2010/365079
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : UniformGd 2 O 3 : Eu 3 + luminescent nanowires were prepared on a large scale by a facile solvothermal method using polyethylene glycol (PEG-2000) as template and ethanol as solvent; the properties and the structure were characterized. X-ray diffraction (XRD) patterns and Fourier transform infrared spectrometry (FTIR) showed that the precursors are hexagonal phaseGd ( OH ) 3 crystals, and the samples calcined at 800C ° are cubic phaseGd 2 O 3 . Transmission Electron Microscopy (TEM) images indicated that the samples are nanowires with a diameter of 30 nm and a length of a few microns. Photoluminescence (PL) spectra showed that the ratio ofD 5 0 → F 7 2 toD 5 0 → F 7 1 transition peak of the calcined samples is stronger than that of the precursors, which confirmed that the color purity of theGd 2 O 3 : Eu 3 + is better than that of the precursors. The as-obtainedGd 2 O 3 : Eu 3 + luminescent nanowires show a strong red emission corresponding toD 5 0 → F 7 2 transition (610 nm) ofEu 3 + under ultraviolet excitation (250 nm), which have potential application in red-emitting phosphors and field emission display devices.