Abstract
In this communication, the authors have synthesized two rare nanostructures of V2O5 using facile plasma assisted sublimation process (PASP). V2O5 nanoflakes and nanoplates assembled in microspheres (NPMSs) was obtained on large area over nickel coated glass substrate using simple precursor of V2O5 pellets as source of oxide. The temperature of growth is varied along with time duration of deposition in order to obtain the different kinds of nanostructure as well as to understand the role of Ni-seed layer playing in controlling the overall morphology of nanostructures. The morphological, structural, and vibrational properties of V2O5 nanostructured thin films are systematically investigated as a function of time and deposition temperatures. Structural analysis carried out using the XRD shows the pure orthorhombic phase of V2O5 and revealed the dependence of crystallinity on the temperature and duration of growth. The Raman study of vanadium and oxygen atoms in nanostructured thin films (NTFs) is carried out by micro-Raman, which evidences the presence of single orthorhombic phase of V2O5 and accorded with XRD results. HRTEM analysis with SAED confirms that NFs and NPMSs are polycrystalline in nature. The stoichiometry ratio obtained from XPS analysis is ∼2.4, shows the compositional purity and stoichiometric nature of V2O5 NTFs. Based on the observed results a three steps growth mechanism is proposed.
Published Version
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