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Hydrophilicity variation of WO3 thin films with annealing temperature

Azimirad, R ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1088/0022-3727/40/4/034
  3. Publisher: 2007
  4. Abstract:
  5. The influence of annealing temperature on the hydrophilic property of WO3 thin films deposited by thermal evaporation and sol-gel dip-coating methods was studied and compared for the first time. The thermal evaporated WO3 thin films annealed at 400 °C showed a nearly super-hydrophilic property without UV and visible illumination. By analysing the O(1s) core level peak of XPS spectra, the amount of oxygen contributed at various bonds (including O2-, OH- and H2O) on the surface of the annealed samples at different temperatures were measured. In addition, a correlation between the hydrophilicity and the concentration of chemisorbed water on the film surface was suggested, independent of the thin film deposition method. © 2007 IOP Publishing Ltd
  6. Keywords:
  7. Deposition ; Rapid thermal annealing ; Sol-gel process ; Surface morphology ; Thermal evaporation ; Thin films ; Tungsten compounds ; X ray photoelectron spectroscopy ; Annealing temperature ; Hydrophilic property ; Sol-gel dip-coating methods ; Hydrophilicity
  8. Source: Journal of Physics D: Applied Physics ; Volume 40, Issue 4 , 2007 , Pages 1134-1137 ; 00223727 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0022-3727/40/4/034/pdf