论文标题
使用石墨烯电极调整聚合物场效应晶体管中的双极性
Tuning Ambipolarity in a Polymer Field Effect Transistor using Graphene electrodes
论文作者
论文摘要
带有2D石墨烯电极的聚合物场效应晶体管是融合了两个世界中最好的设备：一方面，有机材料的低成本和加工性，另一方面，化学鲁棒性，石墨烯的极致薄和灵活性。在这里，我们通过将石墨烯电极掺入晶体管几何形状中，演示了Polyera ActiveInk的半导体聚合物N2200的双极性质。我们的设备显示出平衡的双极行为，高电流的开关比率和电荷载体迁移率。这些影响是由有效的能屏障调制和石墨烯聚合物界面处的电场筛选效应引起的。我们的结果提供了一种在双极晶体管中整合2D石墨烯电极的策略，以改善和调节其特性，为设计新颖的有机电子设备设计铺平道路。
Polymer field-effect transistors with 2D graphene electrodes are devices that merge the best of two worlds: on the one hand, the low-cost and processability of organic materials and, on the other hand, the chemical robustness, extreme thinness and flexibility of graphene. Here, we demonstrate the tuning of the ambipolar nature of the semiconductor polymer N2200 from Polyera ActiveInk by incorporating graphene electrodes in a transistor geometry. Our devices show a balanced ambipolar behavior with high current ON-OFF ratio and charge carrier mobilities. These effects are caused by both the effective energy barrier modulation and by the weak electric field screening effect at the graphene-polymer interface. Our results provide a strategy to integrate 2D graphene electrodes in ambipolar transistors in order to improve and modulate their characteristics, paving the way for the design of novel organic electronic devices.
