Fig. 6
Fully inkjet-printed logic. a Optical microscopy image (dark field) of an integrated circuit demonstrating an all inkjet-printed complementary graphene inverter as shown in the schematic. b The measured resistances of the top (R p) and bottom (R n) GFET as a function of the input voltage. Segments of the curves displaying n-type (p-type) behaviour are drawn in red (blue). c The measured static voltage transfer characteristic of the printed inverter. The inverter is capable of signal inversion between the maximum and minimum of the transfer characteristic. d, e Digital V IN black) and V OUT(red) waveforms measured on one of the fabricated inverters at V DD = 1 V under ambient conditions. f Circuit diagram of a multifunctional printed logic gate with two inputs (A and B) and one output (OUT) with truth table of an OR logic gate. g Digital waveforms measured in an OR logic gate. The gate voltage V GS takes three discrete levels labelled by the values of the corresponding Boolean variables A and B
