液晶性有機半導体材料の有機トランジスタへの展開

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/11/01

タイトル(英語): Liquid Crystalline Organic-semiconductors for Organic Transistor Applications

著者名: 飯野　裕明（東京工業大学 像情報工学研究所），半那　純一（東京工業大学 像情報工学研究所）

著者名(英語): Hiroaki Iino (Imaging Science and Engineering Laboratory, Tokyo Institute of Technology), Jun-ichi Hanna (Imaging Science and Engineering Laboratory, Tokyo Institute of Technology)

キーワード: 有機半導体，液晶，有機薄膜トランジスタ，溶液プロセス　　organic semiconductors，liquid crystals，organic thin-film transistors，solution process

要約(英語): Liquid crystals can be used as a quality organic semiconductor material, because their intrinsic charge carrier transport is electronic. They show high solubility in organic solvents and easy control of molecular orientation, which helps to fabricate uniform films with good surface morphology. We have developed a novel liquid crystalline organic-semiconductor, 2-decyl-7-phenyl-benzothienobenzothiophene (Ph-BTBT-10), which exhibits highly ordered liquid crystal phase of Smectic E (SmE) phase, from 142℃ to 210℃. Uniform and flat polycrystalline thin films can be easily fabricated by spin-coating technique at a liquid crystalline temperature and cooling down to room temperature. The bottom-gate top-contact type field effect transistors (FETs) with the polycrystalline thin films exhibited high FET mobility of 16.6 cm2/Vs in the average of 12 devices and 22.4 cm2/Vs in the maximum. The FETs exhibited thermal durability up to 200℃ thanks to solid-like nature of the SmE phase.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.11 （2016） 特集：有機誘電性・機能性材料の作製・物性評価技術の新展開と次世代エレクトロニクスへの応用

本誌掲載ページ: 671-677 p

原稿種別: 解説論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/11/136_671/_article/-char/ja/