Figure 4
From: Sub-0.5 V Highly Stable Aqueous Salt Gated Metal Oxide Electronics
Resistor-loaded EGTFT inverters operated under aqueous salt conditions.
(a) Static behaviours of resistor (50 kΩ) loaded IGZO EGTFT (W/L = 200 μm/20 μm) inverters with different aqueous KCl concentrations (from 0.1 to 2.0 M) with VDD set to 0.5 V. (b) Dynamic output characteristics of EGTFT inverters in response to the square wave input (10 Hz) depending on different salt concentrations. (c) Semi-log plots of [−(VOUT/VDD – 1)] versus time drawn as a validity proof of exponential rise behaviour. (d) Extracted time constant as a function of KCl concentration. Represented data sets are labelled as follows; black: D.I. water, red: 0.1 M, green: 0.5 M, blue: 1.0 M, violet: 2.0 M of KCl solution.
