THE EFFECT OF SOLUTION COMPOSITION AND Mg DOPING ON STRUCTURAL AND OPTICAL PROPERTIES OF SOL – GEL DERIVED ZnO THIN FILMS

Zn1-xMgxO (x=0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) solutions were prepared by sol-gel synthesis using acetate precursors which were dissolved into different solvents of ethanol, methaol, 2methoxyethanol and chelating agents of monoethanolamine, diethanolamine and triethanolamine . Syntehsized particles were then annealed at various temperatures and times and were observed for effect of doping ratio and temperatures on particle structure. Zn1-xMgxO thin films with different thickness were produced on glass substrate using sol-gel dip coating system and annealed same as the annealing of nanoparticles. The particle size and crystal structure of nanoparticles and thin films were characterized by X-Ray diffraction (XRD) and Scanning Electron Microscope (SEM). The surface morphologies and microstructure of thin films were investigated by SEM and XRD. The surface morphology of the Zn1-xMgxO films depend on substrate nature and sol-gel parameters such as withdrawal speed, drying, heat treatment, deep number (film thickness) and annealing condition. Surface morphologies of Zn1-xMgxO thin films are dense, without porosity, uniform, crack and pinhole free. The particle size, surface morphology, film thickness of nanoparticles and the thin films with different solvents and chelating agents, doping ratio, thickness, temperature and time of annealing process are presented.