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Indexed by:期刊论文

Date of Publication:2014-02-01

Journal:SOLID STATE COMMUNICATIONS

Included Journals:SCIE、EI、Scopus

Volume:180

Page Number:24-27

ISSN No.:0038-1098

Key Words:Nanostructures; VO2(M); Optical properties; Phase transitions

Abstract:W-doped monoclinic vanadium dioxide VO2(M) nanobelts have been transformed from VO2(B) nanobelts in the presence of tungstic acid by a facile one-step hydrothermal route for the first time The as prepared samples were characterized by X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and variable temperature infrared spectroscopy (IR). The results show that W atoms are doped into the crystal lattice of VO2( M) matrix, and the morphology and size of the as obtained VO2(M) nanobelts are dependent on that of the precursor VO2(B). The phase transition temperature (T-c) of W-cloped VO2(M) can be tuned by W doping. The variable temperature IR reveals that the as synthesized W-cloped VO2(M) nanobelts have outstanding thermochromic characters and optical switching properties. (C) 2013 Elsevier Ltd. All rights reserved.