Graphene is a 2-dimensional flat sheet of carbon species confined into a honeycomb structure exhibits unique optical, electrical, thermal and mechanical properties. Graphene due to its fascinating properties finds application in the area of flexible electronics, nano-devices, health care, defence, photovoltaics and many others. In this work, graphene is grown on a copper foil using thermal chemical vapor deposition (CVD) at 1000 °C. Methane is used as a carbon source and hydrogen is supplied for the reduction of copper catalyst.Raman spectroscopy along with surface morphology and surface topology confirms the formation of graphene layer. Further, the fabricated graphene is directly transferred toglass substrate without any support layer. SEM and Raman confirms the defect-free transfer of graphene. Moreover, transferred graphene sheet shows high transparency along with hydrophobic nature with a contact angle of 93°.

中文翻译：

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无支撑层的大面积石墨烯的合成与转移

石墨烯是局限在蜂窝结构中的二维碳素平板，具有独特的光学，电，热和机械性能。石墨烯因其引人入胜的性能而在柔性电子，纳米器件，医疗保健，国防，光伏等领域得到了广泛的应用。在这项工作中，使用热化学气相沉积（CVD）在1000°C的条件下在铜箔上生长石墨烯。甲烷用作碳源，氢气用于还原铜催化剂。拉曼光谱以及表面形态和表面拓扑结构证实了石墨烯层的形成。此外，将制造的石墨烯直接转移到玻璃基板上，而无需任何支撑层。SEM和Raman证实了石墨烯的无缺陷转移。而且，