Synthesis and Thin-film Transistor Characterization of Narrow-gap n-Type Semiconducting Polymers Based on Benzobis(thiadiazole)

• DOI: 10.1246/cl.131025
• Publication Date: 2013-11-22T23:14:09Z
• Authors: Taisuke Uemura; Masashi Mamada; Ryo Teraoka; Daisuke Kumaki; Shizuo Tokito
• Keywords: HOMO/LUMO; Thiazole; Polythiophene; Acceptor; Organic semiconductor; Electron acceptor; Electron Mobility

Solution-processable polymers based on strong acceptor benzobis(thiadiazole) (BBT) units were synthesized to form unipolar n-type organic thin-film transistors (OTFTs) that electronically characterized. These exhibited a narrow band-gap and low LUMO level, resulting in distinct semiconducting properties within the OTFT devices. The BBT–thiazole polymer material showed better electron transport than BBT–thiophene polymers. use of electron-deficient was found be suitable for realization