Study the Structural Properties and Surface Morphology of CdO thin films prepared by Chemical Spray pyrolysis

Karrar Mahdi Saleh

Abstract


CdO films were prepared using a chemical spray paralysis (CSP) method on the glass substrate at a temperature of 350 ° C and thickness (260 ± 15 nm), and study the effect time of annealing (0, 1, 1.5, 2, 2.5) h at a 450 °C annealing temperature On structural properties.

from X-ray diffraction pattern the results showed that all CdO thin films have a polycrystalline crystalline structure and a prevalent growth in the direction (111), and the average grain size (G) in this direction ranges (29.80 - 33.23) nm. It generally increases in value while the agitation values, extraction density, number of crystals decrease by increasing the time of annealing (1-2) h of thin films.
And from resulted of Atomic Force Microscope (AFM) the surface roughness , root mean square ( RMS ) and average grain size increase with increasing of annealing time, Expect for melting thin films at temperatures 450 ̊C and for the time of annealing 2.5h note decrease slightly may be the possibility of an occurrence the cracks- free of the thin films component.


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