Synthèse et caractérisation du CuO les effet de concentration : Influence de la concentration sur la composition chimique, la morphologie, les propriétés électriques ,optoélectroniques

Abstract

In this work, we studied the synthesis and characterization of copper oxide (CuO) thin films prepared using the spray pyrolysis technique. The main objective was to investigate the influence of precursor solution concentration on the structural, morphological, optical, and electrical properties of the deposited films. CuO, as a p-type semiconductor, exhibits promising characteristics for various applications in optoelectronics, energy conversion, and catalysis. Spray pyrolysis proved to be a simple, cost-effective, and efficient method for producing homogeneous thin films. Several characterization techniques were employed, including X-ray diffraction (XRD), atomic force microscopy (AFM), photoluminescence spectroscopy (PL), Fourier-transform infrared spectroscopy (FTIR), as well as electrical measurements using the four-point probe method and Hall effect. The results showed that varying the precursor concentration significantly affects the crystallinity, surface roughness, electrical conductivity, and optical absorption of the films. This study highlights the potential of CuO as a functional material for optoelectronic devices and emphasizes the importance of optimizing deposition conditions to achieve enhanced performance. It also opens up further research opportunities into CuO doping and its integration into more complex structures.