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

Abstract

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 WO 3 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.

Green synthesis of ZnO nanoparticles by Aspalathus linearis: Structural & optical properties

“…Likewise, several studies on their photonics, gas sensing and optoelectronicv properties will be performed and compared to previous literature results [45][46][47][48][49][50][51][52][53][54][55][56]. -Aspalathus Linearis's natural extract was used as an effective reduction/oxidizing agent.…”

Understanding W Doping in Wurtzite ZnO

“…Here, we focus the study to very small quantities of W, as they are the most commonly encountered situation in experiments. ,,,,, To this end, only (2 × 2 × 2) and (3 × 3 × 3) supercells are further considered. Note also that at these low W doping concentrations, W Zn is energetically preferred over W i ; see Figure .…”