Optical Constants and Dispersion Parameters of (NiO)1-x(Co3O4)x Nano Composite Thin Films Prepared by Chemical Spray Pyrolysis
نویسندگان
1 Department of Physics, College of Science, University of Babylon, Iraq
2 Department of Physics, College of Science, University of Babylon, Iraq
3 Department of Physics, College of Science, University of Babylon, Iraq
doi
10.22052/JNS.2026.01.017چکیده
A 0.05 M NiCl2.6H2O and 0.05 M CoCl2.6H2O dissolved in distilled water to make it ready for next step of our preparation were used to produce (NiO)1-x (Co3O4)x nano composite thin films on a glass substrate using a spray pyrolysis process. With increasing Co3O4 concentration, the reflectivity, real and imaginary dielectric constants, and refractive index all increased. This may be due to the homogeneity and surface roughness of the films, a result that is beneficial for gas sensor applications. The energy difference decreased from (3.75 to 2.1) eV. With increasing Co3O4 concentration in the (NiO)1-x(Co3O4)x composite thin films, the dispersion coefficients decreased also. Energy dispersive X-ray spectroscopy (EDX), the analysis revealed the prominent presence of the components Ni, O, and Co. The field emission scanning electron microscopy (FESEM) confirmed our prepared surface it is agglomerate and nanosurface, It can be noted thin films have a common surface shape comprising many randomly placed chunks or aggregates of Co3O4 on the top surface of the films.
