Design of particle swarm optimization for the measurement of Contact resistance and cut-off frequency

OTFTs, or organic thin-film transistors, are very flexible, low-cost semiconductors used in printing, detecting, and displaying application. OTFTs have certain disadvantages despite these advantages, including low cutoff frequency or velocity, high contact resistance, An objective function trained by particle swarm optimization (PSO) has been developed to tackle these problems. The overall performance will be assessed at various channel lengths (length of source and drain electrode) by increasing the contact length. Moreover, scaling the contact length shows that PSO provided the highest cut-off frequency and lowest contact resistance value compared toother methods. Moreover, a drop in contact resistance and an increase in cut-off frequency persist for longer contact length scaling in the about 80 nm range.