Highly Soluble Dithienothiophene (DTT) and Tetrathienoacene (TTA) Derivatives Development for Organic Thin Film Transistor (OTFT) Application

This research focused on development of highly soluble dithienothiophene ( DTT ) and tetrathienoacene ( TTA ) derivatives for organic thin film transistor ( OTFT ) application. Two new highly soluble thienoacenes derivative, DBT-DTTR2 and DBT-TTAR2 were syn sized. enhancement of π – π molecular conjugation with dibenzo[b,d]thiophene ( DBT) group and increasing its solubility properties with introducing alkyl side chains on both of DTT and TTA core. chemical and physical characterizing results which were included characterizing irs optical, electrochemical and rmal properties shows that DBT-TTAR2 has a better performance than DBT-DTTR2 for OTFT application. DBT-DTTR2 and DBT-TTAR2 were fabricated as a p-type semiconductor of OTFT by solution process at Industrial Technology Research Institute. Both compounds were predicted can bring out a high mobility value which is around 0.1 cm 2 /Vs. It was compared with ano r organic semiconductor based on thienoacene derivatives, DP-DTT (μ = 0.42 cm 2 /Vs) which has a good stability