Fig. 5: Stretchability of oxide TFTs in serpentine strings. | Nature Communications

Fig. 5: Stretchability of oxide TFTs in serpentine strings.

From: High density integration of stretchable inorganic thin film transistors with excellent performance and reliability

Fig. 5

a Optical microscope images of 25 unit-devices in serpentine string stretched up to 100% strain. Scale bars, 50 μm. b Transfer characteristics of 25 transistors in parallel connection upon the strain from 0 to 100%. c Field effect mobility and turn-on voltage of TFTs during the stretching test. Error bar represents standard deviation. d, e Optical microscope image of stretchable inverter and its voltage transfer curves under strain up to 100%. Scale bar, 50 μm. f, g Schematic and photograph of two LED pixels driven by stretchable oxide TFTs, embedded in the serpentine bridge. Scale bar, 2 mm. h Current–voltage curves of LED-connected TFTs measured before and after the stretching. i, j Red lights from two LED pixels as the gate voltages swept to the positive side at 0% and 100% strains. Scale bars, 2 mm for both (i, j).

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