Large scale fabrication of graphene over transparent flexible polymer, Polyethelyne tetrapthalate (PET), and its application in flexible field emission display is reported here. We used Cu foil (～160 mm × 60 mm) to grow graphene by thermal chemical vapor deposition process and transfer the graphene over a polymer using a straightforward hot press lamination technique. The fabrication method is facile as there is no rigorous chemical process involved and the process is also applicable towards the fabrication of large scale graphene over a wide range of transparent flexible substrates for foldable micro-electronics applications. Further, we demonstrate the application of graphene/PET polymer film as anode of transparent flexible field emission display device. The device shows low turn-on voltage ～ 1.75 V/μm and high current density of ～ 65μA/cm~2 with field enhancement factor (β) ～1000.
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机译：本文报道了在透明柔性聚合物聚四氟乙烯（PET）上大规模制备石墨烯及其在柔性场发射显示器中的应用。我们使用铜箔（〜160 mm×60 mm）通过热化学气相沉积工艺来生长石墨烯，并使用直接的热压层压技术将石墨烯转移到聚合物上。由于不涉及严格的化学过程，所以该制造方法容易，并且该方法还适用于在可折叠微电子应用的各种透明柔性基板上制造大规模石墨烯。此外，我们展示了石墨烯/ PET聚合物薄膜作为透明柔性场致发射显示装置阳极的应用。该器件的启动电压较低，约为1.75 V /μm，电流密度较高，约为65μA/ cm〜2，场增强因子（β）约为1000。
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