Fig. 5.

Comparison of the circuit performance and complexity of various flexible TFT circuits. a Comparison of mono-type, complementary, ambipolar, and hybrid CNT-based flexible circuits^7,10,39–44. The inverter speed is defined as 1/(stage delay) and the number of transistors represents the achieved circuit complexity. b Comparison of state-of-the-art metal oxide, organic and nanocrystal-based flexible circuits^33,45–49. c Comparison of stage delay among representative flexible ring oscillators^7,10,40–49. To enable fair comparisons, we compared our flexible circuits with recent published results on flexible substrates not including those nanometer scale devices on rigid substrates. See Supplementary Table 3 for our CNT circuits’ typical dimensions