Fig. 5: Synaptic array for image recognition and memorization.
From: An optoelectrochemical synapse based on a single-component n-type mixed conductor
a The photograph of the synaptic array (left) with its magnified optical microscopy image (middle) and a single transistor channel (right). b Transfer characteristics of 64 p(C2F-z) OECTs (W/L = 100 μm/10 μm). c Transconductance distribution in the 8\(\times\)8 synaptic array. d Statistical distribution histogram of the threshold voltage for 64 devices (all operational). e Schematic illustration of synaptic active-matrix arrays with a photomask patterning the letters ‘KA’. Illustration of (f) the image adaptive perception and (g) the memorization of letters. The current change of the array was mapped (f) immediately and (g) 30 s after light (200 mW cm–2) was switched off.
