Impact of Annealing on Structural and Optical Properties of ZnO Thin Films by SILAR Method and its Antimicrobial Applications
International Journal for Research in Applied Science and Engineering Technology
Preparation of Zinc Oxide (ZnO) thin films by modified Chemical Bath Deposition is known as Successive Ionic Layer Adsorption and Reaction (SILAR) method. The structural , optical properties, antibacterial and antifungal activities were studied for different post annealing temperature. X-Ray Diffraction (XRD) pattern confirms the crystalline nature and it exhibits hexagonal structure along with c-axis orientation. Field Emission Scanning Electron Microscope (FESEM) confirms the occurrence of a
... loral pattern and pinhole-free film. Energy Dispersive X-ray (EDAX) results confirms the existence of zinc and oxygen atoms. Optical properties were examined using UV-Visible spectroscopy. The band gap decreases as the annealing temperature increases from250°C to 450°C. Antibacterial activities against E. coli (Gram-negative) show the maximum zone of inhibition when compared to S.aureus (Gram-positive). Antifungal activities against Aspergillussp were also studied.