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Wafer-Scale Synthesis and Transfer of graphene films
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| ABSTRACT We developed means to produce wafer scale, high-quality graphene films as large as 3 in. wafer size on Ni and Cu films under ambient pressure and transfer them onto arbitrary substrates through instantaneous etching of metal layers. We also demonstrated the applications of the large-area graphene films for the batch fabrication of field-effect transistor (FET) arrays and stretchable strain gauges showing extraordinary performances. Transistors showed the hole and electron mobilities of the device of 1100 ( 70 and 550 ( 50 cm2/(V s) at drain bias of -0.75 V, respectively. The piezo-resistance gauge factor of strain sensor was ～6.1. These methods represent a significant step toward the realization of graphene devices in wafer scale as well as application in optoelectronics, flexible and stretchable electronics. |
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2012-12-12 14:17:34, 1.78 M
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