Aqueous Proton Conducting Polymer Electrolytes as Gate Dielectrics for Organic Field-effect Transistors
Author | : Kevin Ton |
Publisher | : |
Total Pages | : 0 |
Release | : 2021 |
Genre | : |
ISBN | : |
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The vast majority of solid electrolyte-gated field-effect transistors (EGFETs) use ionic liquid or lithium ion conducting electrolytes. However, other classes of solid electrolytes have seen little attention for use in EGFETs despite their promising properties. In particular, proton conducting polymer electrolytes have great potential due to their high ionic conductivity, specific capacitance, and environmental stability. In this work, strong acid based proton conducting polymer electrolytes comprised of either phosphoric acid (H3PO4) or sulphuric acid (H2SO4) in a polyvinyl alcohol (PVA) polymer host were investigated as potential gate dielectrics. The resulting proton conducting polymer electrolyte gated EGFET devices exhibited promising performance with sub 1 V operation, a high ON/OFF ratio >105 and a low subthreshold swing of 90 mV/decade, which demonstrates the viability of using proton conducting polymer electrolytes as gate dielectrics in organic thin-film transistors (OTFTs).