近年來噻吩衍生物在有機薄電晶體方面受到越來越多的關注，分子如果要有良好的電性表向，本身須具備良好的-作用力和有效共軛長度，因此本研究將SBT分別結合BT和TVT合成出DTVT-SBT及DbT-SBT，兩者電性皆有0.1 cm2/Vs，且有良好的穩定性，適合用在p-type 的OTFT材料。 ;Organic Thin Film Transistors (OTFT) based on thiophene derivative organic semiconductors, has been receiving increasing attention over the last few years. Many researches develop the most important properties which is - molecular conjugation that can achieve a high performance in organic semiconductors. The novel and promising organic semiconductor has been synthesized based on conjugated 3,3’-bis(tetradecylthio)-2,2’-bithiophene (SBT) with addition bithiophene (BT) and thienovinylthiophene (TVT) as thiophene ring to enhance the - molecular conjugation. The chemical and physical properties which were characterizing their optical, electrochemical, and thermal properties show that DTVT-SBT has a higher performance than DbT-SBT. Both of the compounds are predicted can achieve high mobility at least 0.1 cm2/Vs and good stability for p-type semiconductor in OTFT application.
Key words : organic thin film transistor,3 ,3’-bis(tetradecylthio)-2,2’-bithiophene (SBT), bithiophene (BT), thienovinylthiophene (TVT), p-type semiconductor