Organic field effect transistors from ambient solution processed poly(triarylamine)–insulator blends

Two-component blends of amorphous poly(triarylamines) with selected amorphous and semi-crystalline polymeric binders are investigated as the semiconducting layer in organic field effect transistors (OFET). The blends can be deposited at room temperature from a good solvent and allow the fabrication of devices based on environmentally stable, low-cost organic semiconductors whose solution and solid state properties can be fine-tuned by careful binder selection making them suitable as the active layer in OFET based electronic nose arrays. A preliminary comparison of devices fabricated using drop casting and inkjet printing shows that the thin film morphology and the electronic properties of these blends are strongly dependent on the deposition method.