Synthesis and Characterization of Indium-doped CdO Nanostructured Thin Films: a Study on Optical, Morphological, and Structural Properties

In this study, the doping impact of indium (In) on the actual properties of CdO at different content of (1, 2, and 3 wt% In) was discussed. The samples were prepared utilizing the spray pyrolysis method. The structural, topographical, and optical properties were characterized X-ray diffraction (XRD) analysis, UV-Vis, and atomic force microscope (AFM). The surface topography was discussed by utilizing AFM analysis. Results display that the average diameter appears to be dependent on the indium content. The particle size was decreased from 78.05 to 65.77 nm when In content was increased from 0% to 3%. It is found that the roughness of the film was decreased to 3.03 nm via increasing In content to 3%. Also, the band gap of prepared samples were studied and compared. Results revealed that the value of band gap is decreasing via doping indium. The band gap of bare CdO, 1%In-CdO, and 3%In-CdO were determined 2.63, 2.54, and 2.46 respectively.