Vertical Electrolyte Transistor

What it this? Vertical electrolyte transistor…

 

https://ars.els-cdn.com/content/image/1-s2.0-S1567173920301607-fx1_lrg.jpgFigure from: https://www.sciencedirect.com/science/article/abs/pii/S1567173920301607

 

Vertical Electrolyte Transistor presents similar architecture to Vertical Organic Field Effect Transistors (VOFETs) but with different structure. The gate dielectric layer is composed also by ionic species and it has already been widely applied in EGOFETs and/or OECTs.

This electrolyte layer brings great advances for the transistor, e.g, like to be able to operate with very low voltage range (up to 0.5V) together with a good on-off current ratio. Beyond that, electrolyte dielectric layers can be formed
by a liquid electrolyte layer as water, for example, improving its bio-compatibility with (opto-)electronic devices. The high efficiency obtained in electrolyte transistors is a consequence of the ultra-high capacitance of the electrolyte
dielectric layer due to the electrolyte/semiconductor polarization that produces an electronic double layer with ionic and electric charges. This electrolyte dielectric layer has been recently used also in vertical transistor architecture developing Vertical Electrolyte Transistors (VETs).

Vertical Electrolyte Transistor can be able to operate as an Electrolyte-Gated VOFET (transconductance created by field effect only) or to operate as VOECT (transconductance created by ionic and electric current), where VOECT is the acronyms to Vertical Organic Electrochemical Transistor.

You can find more details in the next reference…

Author: Keli F. Seidel. Fabrication and electrical characterization of vertical electrolyte transistor. Current Applied Physics, Volume 20, Issue 11, November 2020, Pages 1288-1294.

https://doi.org/10.1016/j.cap.2020.07.012

 

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