Thin films of nanocomposite of zinc oxide−reduced graphene oxide (ZnO-rGO) deposited on soda-lime glass substrates were prepared using ultrasonic spray pyrolysis (USP) at 460 °C. The preparation process does not use harsh acids and is environmentally friendly. The deposition period of 2. 3. https://www.paulynramirez.com/product-category/cartoon-art/