Optical and Structural Properties of Nio Thin Films
A simple and inexpensive spray pyrolysis technique (SPT) was employed to deposit nickel oxide NiO thin films from hydrated nickel chloride salt solution on to glass substrate. The effect of thickness and molari- ties of sprayed solution on structural, optical and electrical properties was studies using X-ray diffraction (XRD) , optical absorption and hall effect .it is found that increase in film thickness crystalline of the film, consequently the band gap energy increase from 3.1 to 3.4 eV , electrical properties of NiO films show that the films thickness 100 nm have con- ductivity of n-type, while the films have 300 nm thickness have conductivity of p-type.