Coplanar Floating Gates Connected with Ionic Bridges for Remote Gating Graphene Transistors
발표자
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초록
내용
Exploiting the long range polarizability of an electrolyte based on ion migration, electric double layer transistors (EDLTs) can be constructed in an unconventional configuration in which the gate electrode is placed remotely from the device channel with finite distance. The dynamic characteristics of remote-gated EDLTs, however, degrades with this distance, because the formation of EDL relies on the travel distance of ions under gate field. To maintain the dynamic characteristics, we present multiple coplanar floating gates bridged through short ionic dielectric layers. Unlike a remote-gated EDLTs employing a single, extended electrolyte layer, the devices with multiple, short electrolyte layers operate promptly even when they are gated from a distance. The results indicate that the distance-dependence degradation on the dynamic characteristics of the remote-gated EDLTs can be eliminated. The new device architecture provided here shows new opportunities to exploit graphene EDLTs.