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Photon-induced tunable and reversible wettability of pulsed laser deposited W-doped ZnO nanorods

  • B.D. Ngom (a1) (a2), O. Sakho (a1), S. Ndiaye (a1), R. Bartali (a3), A. Diallo (a1), M.B. Gaye (a1), S. Bady (a1), N. Manyala (a4), M. Maaza (a2) and A.C. Beye (a1)...
Abstract

ZnO nanorods arrays were prepared on soda lime glass substrate by pulsed laser deposition method. Hexagonal rod-like ZnO rods were obtained under different conditions. Well-defined ZnO nanorods arrays were selected among different samples having various morphologies and sizes already studied by X-ray diffraction (XRD) and atomic force microscopy (AFM). Here, we report on the contact angle measurement (CAM) of one of these samples. A systematic change of the surface wettability is observed in W-doped ZnO nanostructures. The water contact angle (WCA) of a 1 wt.% of WO3 target content was found to be the transition doping level from hydrophilic surface to a hydrophobic surface. We attributed the transition in surface wettability of the film with the doping to incorporation increase of tungsten into the film. Such characteristic surface wettability can play a key role in the adhesion of various layers on W-ZnO nanorods arrays for optoelectronic device applications.

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Corresponding author
ae-mail: ngom@emt.inrs.ca; bdngom@gmail.com
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The European Physical Journal - Applied Physics
  • ISSN: 1286-0042
  • EISSN: 1286-0050
  • URL: /core/journals/the-european-physical-journal-applied-physics
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