Design of a Quinoidal Thieno[3, 4‐b]thiophene‐Diketopyrrolopyrrole‐Based Small Molecule as n‐Type Semiconductor. Issue 10 (16th January 2019)

• Record Type: Journal Article
• Authors: Ren, Longbin; Yuan, Dafei; Zhu, Xiaozhang
• Is Part Of: Chemistry, an Asian journal. Volume 14:Issue 10(2019)
• Page Start: 1717
• Page End: 1722
• Publication Date: 2019-01-16
• Subjects: ambient stability -- electron mobility -- organic thin-film transistors -- semiconductors -- thermal annealing; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201801737
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: A quinoidal small‐molecule semiconductorQDPPBTT was synthesized. Organic thin‐film transistor (OTFT) devices based onQDPPBTT showed an electron mobility as high as 0.13 cm 2 V −1 s −1 and I on / I off ratio of 10 6 under ambient conditions. We suggested that 2D extended π‐conjugation and quinoid‐enhancing effect had an important role in electron mobility and stability of n‐type FET devices, which might be a good strategy in designing new material systems. Abstract : FET devices on a diet : A quinoidal semiconductorQDPPBTT with low‐lying LUMO energy level and 2D π‐expanded conjugation was designed and synthesized. Solution‐processed organic thin‐film transistor (OTFT) devices fabricated byQDPPBTT showed an electron mobility as high as 0.13 cm 2 V −1 s −1 and I on / I off ratio of 10 6 under ambient conditions. HD=hexyldecyl.