SYNTHESIS AND CHARACTERISATION OF Ni-DOPED ZnO THIN FILMS PREPARED BY CHEMICAL BATH DEPOSITION

Abstract

The experimental investigations of the optical and structural properties of Ni-doped ZnO thin films produced by chemical bath depositions were carried out. While producing ZnO, ZnCl2, EDTA and NH3 were used. In this production method, Ni doping was made for the first time. The XRD results verified the formation of the Ni doped ZnO thin films with a hexagonal wurtzite structure. The increment of the Ni doping amount allowed a decrease in the average crystallite size. It was observed that the transmittance of the films increased significantly as the amount of additive increased. It was observed that the band gap increased significantly after the additive amount passed 0.6 mM. The surface roughness was calculated from the SEM images analyses of the Ni doped ZnO films by using Image J software. It was observed that the surface roughness increased as the amount of Ni increased.