Lateral protonic/electronic hybrid oxide thin-film transistor gated by SiO2 nanogranular films

Ionic/electronic interaction offers an additional dimension in the recent advancements of condensed materials. Here, lateral gate control of conductivities of indium-zinc-oxide (IZO) films is reported. An electric-double-layer (EDL) transistor configuration was utilized with a phosphorous-doped SiO2 nanogranular film to provide a strong lateral electric field. Due to the strong lateral protonic/electronic interfacial coupling effect, the IZO EDL transistor could operate at a low-voltage of 1V. A resistor-loaded inverter is built, showing a high voltage gain of similar to 8 at a low supply voltage of 1V. The lateral ionic/electronic coupling effects are interesting for bioelectronics and portable electronics. (C) 2014 AIP Publishing LLC.