Fig. 4: Single-OECT Schmitt trigger.
From: Bistable organic electrochemical transistors: enthalpy vs. entropy
a The bistable OECT functions as a Schmitt trigger, allowing for noise suppression and analog-to-digital conversion. b Transfer curve of an OECT (VDS = −0.2 V) with offset-shifted white noise input signal (Gaussian noise with f = 400 Hz, Vpp = 10 V). Insets: Four distinct regimes of output noise. c Input vs. output noise as extracted from b against an analytical reference (Fig. S11). d The device functions as an ADC despite severe input noise. e Fourier transformation of a first-order Butterworth filter revealing higher harmonics in the output.
