SILAR-Deposited CuO Nanostructured Films Doped with Zinc and Sodium for Improved CO Gas Detection.

Gas sensing is of significant importance in a wide range of disciplines, including industrial safety and environmental monitoring. In this work, a low-cost SILAR (Successive Ionic Layer Adsorption and Reaction) technique was employed to fabricate pure CuO, Zn-doped CuO, and Na-doped CuO nanotextured films to efficiently detect CO gas. The structures, morphologies, chemical composition, and optical properties of all films are characterized using different tools.