摘要
Molybdenum disulfide (MoS2) has gained attention for its promising gas-sensing capabilities due to its high surface area and tunable electronic properties. In this study, we investigate the time-dependent growth (under constant conditions) of sputtered MoS2 films on ZnO nanorods and their impact on NO2 sensing performance. ZnO nanorods, synthesized via a hydrothermal method, provide a high-surface-area template to enhance charge transport and gas adsorption. Gas-sensing experiments revealed a strong correlation between MoS2 thickness and NO2 response, with the 25-min-sputtered MoS2 film exhibiting the highest response of 20.9%. The synergistic interaction between MoS2 and ZnO nanorods facilitated charge transfer and enhanced adsorption sites for NO2 molecules. These findings emphasize the critical role of time-dependent growth of MoS2 film in modulating gas-sensing performance and provide insights into designing high-sensitivity NO2 sensors at room temperature. This study contributes to the development of hybrid MoS2/ZnO nanostructures for next-generation environmental monitoring applications.