In this work we report on fully operational sub-micrometric low voltage OFETs by using graphene as the source-drain electrodes pair and a high-$\kappa$ ultra-thin dielectric in a local gate architecture. The impact of the graphene electrodes on the miniaturization of the organic devices has been assessed, with particular attention to the influence of the contact resistances as well as the parasitic overlap gate capacitance on the device bandwidth. By the use of a modified Transmission-Line-Method, contact resistances have been analyzed as function of the applied voltages, revealing characteristic functional trends that follow the doping state of graphene electrodes. Through impedance spectroscopy of the electrodes, cut-off frequencies as high as 10⁵ Hz have been estimated, highlighting the peculiar role of quantum capacitance of graphene in such architectures.

在这项工作中，我们报告了使用石墨烯作为源漏电极对以及使用$\kappa$本地栅极架构中的超薄电介质。已经评估了石墨烯电极对有机器件小型化的影响，尤其要注意接触电阻以及寄生重叠栅电容对器件带宽的影响。通过使用改进的传输线方法，已分析了接触电阻与施加电压的关系，揭示了遵循石墨烯电极掺杂状态的特征功能趋势。通过电极的阻抗谱，估计截止频率高达10 ⁵ Hz，这突显了石墨烯量子电容在此类架构中的独特作用。