Nd:YAG laser synthesis of nanostructural V 2 O 5 from vanadium oxide sols: Morphological and structural characterizations

S. Beke, L. Korösi, S. Papp, L. Nánai, A. Oszkó, J. G. Kiss, V. Safarov

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22 Citations (Scopus)

Abstract

Vanadium oxide thin films were prepared by sol-gel method, then subjected to Nd:YAG laser (CW, 1064 nm) radiation. The characteristics of the films were changed by varying the intensity of the laser radiation. The nanocrystalline films were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). XRD revealed that above 102 W/cm 2 the original xerogel structure disappears and above 129 W/cm 2 the films become totally polycrystalline with an orthorhombic structure. From TEM observations, we can see that due to laser radiation, the originally fibrillar-like particles disappear and irregular shaped, layer structured V 2 O 5 particles are created. From XPS spectra we can conclude that due to laser radiation the O/V ratio increased with higher intensities.

Original languageEnglish
Pages (from-to)1363-1368
Number of pages6
JournalApplied Surface Science
Volume254
Issue number5
DOIs
Publication statusPublished - Dec 30 2007

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Keywords

  • Laser radiation
  • SEM
  • Sol-gel process
  • TEM
  • Vanadium oxide thin films
  • X-ray diffraction
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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