SYNTHESIS AND CHARACTERIZATION OF MAGNESIUM AND ALUMINUM-DOPED TITANIUM DIOXIDE (TIO2) THIN FILMS

Abstract

The synthesis and characterization of magnesium and aluminum-doped titanium dioxide (TiO2) thin films through the hydrothermal method had been investigated in this study. These thin films will be prepared through hydrothermal method for potential applications in various optoelectronic devices due to controlled particle size, improved crystallinity, and uniform deposition of thin films. The hydrothermal reaction will be conducted at 120 oC temperatures, which allowed for the successful incorporation of Mg and Al ions into the (TiO2) lattice. These are the following characterization techniques XRD, SEM, EDX and UV visible spectroscopy. The sharp XRD diffraction peaks of obtain TiO2 doped with magnesium/aluminum thin film clearly indicated there is no more difference between pure anatase TiO2 and TiO2 doped with magnesium and aluminum. The average crystallite size was estimated to be 22 nm, according to Scherer equation. SEM was used to study the surface morphology and dimension of as-prepared TiO2 doped with magnesium/aluminum thin film in the present work. SEM show that’s there was porous structure of TiO2 doped with magnesium/aluminum. The SEM result show that when we doped titanium dioxides with magnesium and aluminum then its original structure does not change.it means that dopant does not disturb the original structure of TiO2 Energy-dispersive X-ray spectroscopy (EDX) was utilized to determine the elemental composition of the doped (TiO2) thin films. The EDX analysis provided information about the original elements and when doped the TiO2 with magnesium/aluminum. It is clear from result the peak show that there were dopant elements present. UV-visible spectroscopy is employed to evaluate the optical properties of the doped thin films. The absorption and transmission characteristics are analyzed to understand the bandgap modifications induced by Mg and Al doping, shedding light on the potential applications of these materials in photo catalysis and solar cell technologies etc.