title: Organic transistors with high thermal stability for medical applications.
abstract: The excellent mechanical flexibility of organic electronic devices is expected to open up a range of new application opportunities in electronics, such as flexible displays, robotic sensors, and biological and medical electronic applications. However, one of the major remaining issues for organic devices is their instability, especially their thermal instability, because low melting temperatures and large thermal expansion coefficients of organic materials cause thermal degradation. Here we demonstrate the fabrication of flexible thin-film transistors with excellent thermal stability and their viability for biomedical sterilization processes. The organic thin-film transistors comprise a high-mobility organic semiconductor, dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene, and thin gate dielectrics comprising a 2-nm-thick self-assembled monolayer and a 4-nm-thick aluminium oxide layer. The transistors exhibit a mobility of 1.2 cm(2) V(-1)s(-1) within a 2 V operation and are stable even after exposure to conditions typically used for medical sterilization.
authors.affiliation: Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Kuribara
authors.forename: He
authors.initials: H
authors.lastname: Wang
authors.forename: Naoya
authors.initials: N
authors.lastname: Uchiyama
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Fukuda
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Yokota
authors.forename: Ute
authors.initials: U
authors.lastname: Zschieschang
authors.forename: Cherno
authors.initials: C
authors.lastname: Jaye
authors.forename: Daniel
authors.initials: D
authors.lastname: Fischer
authors.forename: Hagen
authors.initials: H
authors.lastname: Klauk
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya
authors.forename: Masaaki
authors.initials: M
authors.lastname: Ikeda
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Kuwabara
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Sekitani
authors.forename: Yueh-Lin
authors.initials: YL
authors.lastname: Loo
authors.forename: Takao
authors.initials: T
authors.lastname: Someya
mesh_terms: D004582:Electronics, Medical / Q000295:instrumentation*; D012666:Semiconductors; D013242:Sterilization; D013696:Temperature; D014173:Transistors, Electronic