Journal of Alloys and Compounds, cilt.1053, 2026 (SCI-Expanded, Scopus)
In recent years, zinc oxide (ZnO) and copper oxide (CuO) based transparent conductive oxide (TCO) materials have attracted considerable attention because they can be fabricated using more straightforward and more cost-effective methods. TCO nanocomposites (NCs) derived from semiconductors represent an essential class of heterogeneous nanostructures. They exhibit superior physical and chemical properties compared to conventional TCO materials composed of a single metal. In this study, the Ultrasonic Spray Pyrolysis (USP) method is utilized to prepare ZnO-CuO films, and their electrical and optical properties are subsequently characterized. The resulting ZnO-0.5CuO and ZnO-1.0CuO composite films exhibited nanodot-on-nanorod structures. XRD analysis confirms the formation of the ZnO–CuO heterostructure and the preservation of the preferred orientation of ZnO (002). Once the samples’ electrical conductivities are measured, it is determined that the CuO sample has the highest conductivity. In the doped samples, ZnO-1.0CuO has the highest conductivity, followed by ZnO-0.5CuO, which has the least. Optical analyses revealed that the band gap energy decreased from 3.23 ± 0.02 eV to 3.11 ± 0.03 eV with increasing CuO doping. These findings demonstrate that ZnO–CuO composites offer significant potential for TCO applications, due to their tunable electronic and optical properties.