Effects of technological parameters onto OTFTs' electrical performance

The paper aims to asses and describe the optimal fabrication of organic thin film transistors (OTFTs) with commercially available materials. Several types of thermal treatments and substrate treatments are discussed. The speed and direction of the thermal treatment for solvent evaporation and polymerization of the dielectric and the semiconductor influences the final electrical parameters of the devices. Also, substrate treatments have an effect onto the uniformity and alignment of the coated materials. Transistors with various channel lengths are fabricated and their electrical parameters are assessed taking into account the effect of the processing steps and their geometry.