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. 2020 May 15;11:2405. doi: 10.1038/s41467-020-16268-8

Fig. 2. IGZO FN-based TFTs and gas sensors.

Fig. 2

a Diagram of a rigid TFT array. b Typical transfer curve of an IGZO FN-based TFT. c Square-root of drain current vs. gate voltage plots of an IGZO fiber-based TFT at the indicated NO2 concentrations. d Relative change of saturated current as a function of NO2 concentration. e Real-time source–drain current (VD = VG = 50 V) response to dynamic switching between NO2 concentrations (20 ppb–20 ppm). f Plot of source–drain current vs. time with exposure to 20 ppm NO2 or air. g Enlarged panel in f, showing detailed shape of sensing curves and definition of response/recovery time. h Schematic representation of ion-gel gated flexible IGZO NF-based TFT on 1.5-μm-thick polyimide substrate. i Mobility and threshold voltage variations under the indicated bending radii. j Mobility variation over 1000 bending cycles at a radius of 5 mm.