This research addresses the imperative to enhance semiconductor materials to meet the escalating demands of modern technological applications. Specifically, it focuses on the efficient preparation of ZnO/GO composites via a hydrothermal method, targeting advancements in semiconductor properties. The study aims to elucidate the synergistic effects of combining ZnO and graphene oxide (GO) and to control their structural and optical properties for applications in optoelectronics, solar cells, sensors, and catalysis. The investigation involves the preparation of ZnO–GO composites with varying amounts of GO, followed by morphological, crystalline, and optical characterization. The process entails the synthesis of ZnO/GO composites through a series of steps, including solution preparation, autoclaving, and drying. Results indicate the potential of ZnO/GO composites to exhibit enhanced semiconductor capabilities, paving the way for future technological advancements. The controllable nature of the hydrothermal process offers scalability and promising avenues for further research and development in Materials Technology. This research contributes significantly to the field of semiconductor materials and lays the groundwork for future innovations in composite materials for diverse technological applications.