Physical Properties of the Nano-Crystaline Spin-Coated Zinc Oxide Thin Film

Abstract

Abstract In this study, Zinc oxide thin films have been synthesized using dehydration from various precursors. In ethanol and mono-ethanolamine, zinc acetate (I) and zinc nitrate (II) were dissolved. Following that, glass substrates were coated with this solution using the sol-gel spin coating method (3000 rpm for 10 s), and for making zinc oxide thin films were heated at 250°C. This process was done five times to make the films thicker (and allow them to form five layers on the substrate), and then they were annealed at 450°C. zinc oxide thin films derived from zinc acetates (I) are almost transparent in visible light in comparison zinc nitrates (II) product. The highest energy gap (3.3ev) and crystal size (74nm) were also achieved in zinc acetates (I) products. The presence of various vibration modes in the prepared samples was also revealed by Raman spectroscopy (RS) of the annealed films. The presence of concentrated stresses within the coated films is also determined using RS, and verify the scanning electron microscopy results the Raman peaks of E2 is confirmed by FE-SEM images.