Electrolyte-Gated Indium Oxide Based Transistor on PET Substrate Enabled by Hybrid Process

Abstract

Printed electronics have demonstrated compatibility with flexible or non-conformal surfaces. Capillary-printed In2O3 nanoparticle-based transistors have great potential for flexible electronics since these devices exhibit highcarrier densities and mobility values. Another interesting advancement is the use of an electrolyte as a gate-insulator, which allows to reduce the voltage requirements of transistors down to 1 V. Herein, we present a methodology for electrolytegated transistors (EGTs) on polyethylene terephthalate (PET) substrates by incorporating inkjet-printing, capillary-based deposition, and laser ablation processes. These hybrid-printed EGTs show an Ion/Ioff ratio of up to 105, which is comparable to their counterparts on rigid substrates, creates routes for integrated printed electronics on flexible substrates.