Effect Of Thin Layer Thickness Of Iron Oxide Prepared By Sol-gel On The Opto-electronic Properties Of The Material

Thin Hematite iron oxide layers (a Fe2O3) were synthesized successfully using FeCl3 as precursor, ethanol as solvent and acetic acid as catalyst according to the sol-gel process and spin-coating technique. The structural properties of the films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy, and optical properties by the UV-Vis spectroscopy. This study shows a singular behavior of optical transmission characterized by two bearings and a clear dependence of optoelectronic parameters with film thikness.