مقارنة الخواص الفيزيائية والكيميائية لأغشية أكسيد النيكل والزنك محضرة بتقنية كيميائية

Abstract

This study aims to compare the physical and chemical properties of thin films of nickel oxide (NiO) and zinc oxide (ZnO) prepared using the spray pyrolysis technique. These films were deposited on glass substrates under controlled preparation conditions, such as concentration and temperature, in order to investigate the influence of these parameters on the properties of the resulting films. The crystalline structure was analyzed using X-ray diffraction (XRD), and the results showed the formation of characteristic crystalline structures for both NiO and ZnO . From an optical point of view, transmittance and absorption coefficient were studied, and the optical band gap energy was determined. Clear differences were observed between the values obtained for nickel oxide and zinc oxide films . In addition, some chemical properties affecting the stability and performance of these films were analyzed. The results demonstrated that both NiO and ZnO possess distinctive properties that make them suitable for various applications, such as solar cells and electronic devices. Their performance can also be improved by controlling the preparation conditions. It was observed that increasing the concentration had a more pronounced effect on ZnO films compared to NiO films. Furthermore, the sample prepared at a concentration of 0.2 M exhibited the best performance in terms of the investigated properties, making it a good and suitable candidate for future technological applications.