초록 |
Exploiting the long-range polarizability of an electrolyte, electric double-layer transistors (EDLTs) can be constructed in an unconventional configuration. For example, the current density of a transistor channel can be modulated using a gate electrode that is not located directly on top/below the channel but placed apart from the channel as long as the electrode is bridged with the channel through the electrolyte. In this paper, we demonstrate the influence of the distance factors of the electrolyte layer on the operation of EDLTs with a coplanar gate. As the promptness of the EDL formation depends on the distance between the channel/gate, the dynamic characteristics of transistor degrade with long distance. To suppress this degradation, we suggest using multiple short ionic bridges. Unlike EDLTs that utilizes a single extended electrolyte layer, the devices with multiple segmented electrolyte layers operate effectively even when they are gated from a distance longer than 1 mm. |