Study of the effect of non-thermal plasma on the structural properties of pure Cadmium Oxide thin Films (CdO) prepared by Pulsed laser Deposition Technique ( PLD )

Abstract

In this research, the preparation of pure ( CdO ) films on a glass substrate was conducted using pulsed laser deposition method (PLD) .The deposition of the films was done at different times ( 5 , 10 , 15 , 20 ) minutes at room temperature . The effect of non-thermal plasma on these prepared films in two exposure times of (30, 60) minutes was studied. The results of X-ray diffraction (XRD) of the prepared pure ( CdO) films showed that the films have polycrystalline structure of cubic phase with preferred orientation (111) . It was noted that the increasing of deposition time of (Nd : YAG) laser , reduces the intensity of diffraction peaks at (111 ) , (200) , (220) . The results of (XRD) have also showed that when the prepared pure ( CdO ) films are exposed to non-thermal plasma , their crystalline structure was not affected . The tests also showed that the increasing of the exposure time to non-thermal plasma causes a decrease in the intensity of the diffraction peaks. The (AFM) tests also demonstrated that the changing in ( RMS ) of the surface roughness is irregular and it was found that the ( RMS ) increases by increasing the deposition time.