Journal Article organic bioelectronics organic electrochemical transistor additive free annealing free antiambipolar conjugated polymer conjugated polymers diluted organic semiconductors electron transport mixed conductors molecular weight n-type semiconductors neural network neural network hardware n‐type small molecules oligomers organic electrochemical synaptic transistors organic electrochemical transistors organic field-effect transistors organic mixed ionic‐electronic conductor organic mixed ionic‐electronic conductors polymer alignment reservoir computing shear coating small‐molecule mixed ionic–electronic conductors solar cells ternary inverter thieno[3,2-b][1]benzothiophene isoindigo