Eco Friendly Synthesis of Zinc Oxide Nanoparticles and Printing onto Electrically Conductive Substrate Using Electrostatic Spray Deposition

The study presents the efficient synthesis of hexagonal wurtzite zinc oxide (ZnO) nanoparticles and a stable nano colloid by a one-pot thermolysis synthesis method. In this investigation, the average particle size for the synthesized ZnO was about 60 nm, condensed and adhesive zinc oxide thin films were productively sprayed onto fluorine doped tin oxide glass at room temperatures using a controllable electrostatic spray deposition method. This technique is useful method to deposit a facile, non-vacuum, and inexpensive layer. The synthesized nanoparticles were characterized by X-ray diffraction, dynamic light scattering, Fourier-transform infrared spectroscopy, and purity and surface morphology of thin film was confirmed by scanning electron microscope. Thermogravimetric analysis of the ZnO nanoparticles showed that weight loss continued until 450 ˚C. Results revealed optimized deposition conditions at the voltage of 26 kV, the flow rate of 3 μl/min, and nozzle to substrate distance of 8 cm. In the wavelength ranging between 300-900 nm, the optical absorbance and transmittance measurements were recorded and the UV–Visible spectrum of the ZnO thin film showed maximum absorbance at around 350 nm.