Impact of gate geometry on ionic liquid gated ionotronic systems

Ionic liquid electrolytes are gaining widespread application as a gate dielectric used to control ion transport in functional materials. This letter systematically examines the important influence that device geometry in standard “side gate” 3-terminal geometries plays in device performance of a wel...

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Bibliographic Details
Published in:APL materials 2017-04, Vol.5 (4), p.042501-042501-7
Main Authors: Wong, A. T., Noh, J. H., Pudasaini, P. R., Wolf, B., Balke, N., Herklotz, A., Sharma, Y., Haglund, A. V., Dai, S., Mandrus, D., Rack, P. D., Ward, T. Z.
Format: Article
Language:English
Subjects:
electric measurements
electrodes
materials properties
MATERIALS SCIENCE
photoresistors
superconductors
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Summary:Ionic liquid electrolytes are gaining widespread application as a gate dielectric used to control ion transport in functional materials. This letter systematically examines the important influence that device geometry in standard “side gate” 3-terminal geometries plays in device performance of a well-known oxygen ion conductor. We show that the most influential component of device design is the ratio between the area of the gate electrode and the active channel, while the spacing between these components and their individual shapes has a negligible contribution. These findings provide much needed guidance in device design intended for ionotronic gating with ionic liquids.
ISSN:2166-532X
2166-532X
DOI:10.1063/1.4974485