Iranian Journal of Materials Science and Engineering

en Annealing Effects on Structure, Surface Morphology, and Optical Properties of Cu-Doped CdOₓ Thin Films Grown by Spray Pyrolysis گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper This work reports the influence of Cu dopant and annealing temperature on CdOx thin films deposited on glass substrates by spray-pyrolysis method. The Cu doping concentrations were 0, 0.46, and 1.51 at% with respect to the CdOx undoped material. Then, the fabricated films were subjected to annealing process at temperature of 450°C. X-ray diffraction (XRD) examination confirms that the as-deposited films show a cubic crystallographic structure with high purity of CdO in the annealed films. It was found that the (111) peak is the most predominant diffraction orientation in the surveyed samples. At the microscopic scale, AFM machine was operated to quantify the three important parameters of the mean roughness (Ra), rms value (Rq), and z scale. These parameters hold highest values for the sample with 0.46 at% of Cu. Finally, reflectance, absorbance, transmittance and other optical parameters dielectric measurements were comprehensively analyzed. Our evaluation of optical band gaps for the studied samples reveals that the synthesized films have direct band gap character with the fact that the rise in the Cu contents in the as-deposited films lead to lessen the band gap values. In contrast, annealing process results in raising the band gap.   spray pyrolysis,surface morphology,band gap,absorption 156 168 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-4748-4&slc_lang=en&sid=1 Noor alhuda Hassan nooralhuda.h.a@ihcoedu.uobaghdad.edu.iq 1800319475328460021157 1800319475328460021157 No Department of Physics, College of Education for Pure Science - Ibn Al-Haitham, University of Baghdad, 10071 Baghdad, Iraq Zainab Jaf Zainab.n.a@ihcoedu.uobaghdad.edu.iq 1800319475328460021158 1800319475328460021158 No Department of Physics, College of Education for Pure Science - Ibn Al-Haitham, University of Baghdad, 10071 Baghdad, Iraq Hanaa Ibrahem hanaa.i.m@ihcoedu.uobaghdad.edu.iq 1800319475328460021159 1800319475328460021159 No Department of Physics, College of Education for Pure Science - Ibn Al-Haitham, University of Baghdad, 10071 Baghdad, Iraq Mohammed Hamid mohammed.h.m@ihcoedu.uobaghdad.edu.iq 1800319475328460021160 1800319475328460021160 No Department of Physics, College of Education for Pure Science - Ibn Al-Haitham, University of Baghdad, 10071 Baghdad, Iraq Hussein Miran hussein.a.j@ihcoedu.uobaghdad.edu.iq 1800319475328460021161 1800319475328460021161 Yes Department of Physics, College of Education for Pure Science - Ibn Al-Haitham, University of Baghdad, 10071 Baghdad, Iraq