An investigation towards the influence of grain size crystals in the thin layers of Organic FETs

Organic semiconductor industry is gaining much attention from the electronic circuits' communities by exploring the charge transport characteristics in high-performance Organic Field Effect Transistors (OFETs). The work focuses on the fabrication by the process of spin coating of poly(3-hexylthiophene) (P3HT) films, synthesis and properties of its thin film layers. Layers with (Al)/P3HT/Alq3/Sn/(Al) were prepared. The investigations manifested the presence of nano fiber like particles or dreg like structures affected the charge transport characteristics in high-performance OFETs. The size of the crystals and its interdependence in the thin film layers play an important role in the mobility of the transistor. The main objective is to prove that the morphological characteristics, if controlled, can lead to an enhanced device level performance in Organic Field Effect Transistors.