title: Long-term air-stable n-channel organic thin-film transistors using 2,5-difluoro-1,4-phenylene-bis{2-[4-(trifluoromethyl)phenyl]acrylonitrile}.
abstract: A long-term air-stable n-type organic semiconductor, 2,5-difluoro-1,4-phenylene-bis{2-[4-(trifluoromethyl)phenyl]acrylonitrile}, was synthesized by a high-yield simple procedure of Knoevenagel condensation with aldehyde and acetonitrile derivatives. A fabricated organic thin-film transistor (OTFT) using this compound exhibited good n-channel OTFT properties with a high electron mobility of 0.17 cm(2) V(-1) s(-1) and an on/off current ratio of 10(6) under both vacuum and ambient air operation. After storage in ambient air for 1 year, a stored n-channel OTFT still shows good n-channel OTFT performance with little degradation in ambient air operation.
authors.affiliation: Department of Computer Science and Electronics, Kyushu Institute of Technology , 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Nagamatsu
authors.forename: Shinya
authors.initials: S
authors.lastname: Oku
authors.forename: Kouji
authors.initials: K
authors.lastname: Kuramoto
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Moriguchi
authors.forename: Wataru
authors.initials: W
authors.lastname: Takashima
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Okauchi
authors.forename: Shuzi
authors.initials: S
authors.lastname: Hayase