AFM characterization of Multilayered Graphene film used as Hydrogen Sensor
نویسنده
چکیده
Graphene, the crystalline allotrope of Carbon has phenomenal electrical properties and hence a number of application prospects. Multi-Layered Graphene (MLG) has tremendous application prospects as gas sensors. Thermal CVD performed at atmospheric pressure is a very simple and affordable synthesis technique for growing MLG. In this project we characterized Thermal-CVD grown MLG films with the Atomic Force Microscope (AFM) to determine the optimal growth condition by measuring surface roughness and thickness. The results were verified by both contact and close-contact mode of imaging. It was also determined that increased surface roughness creates additional sites for Hydrogen adsorption. The results agree with other Hydrogen sensor data. Keywords—AFM, CVD, Graphene, SiO2
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