Hall-effect Measurement of Organic Semiconductor Layers Using Micro-scale Electrode Chips

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/09/01

タイトル(英語): Hall-effect Measurement of Organic Semiconductor Layers Using Micro-scale Electrode Chips

著者名: Kei Noda (Department of Electronic Science and Engineering, Kyoto University), Akira Sugawara (Bio-Nano Electronics Research Center, Toyo University), Tsutomu Watahiki (Wako Pure Chemical Industries, Ltd.), Kuniaki Okamoto (Wako Pure Chemical Industries,

著者名(英語): Kei Noda (Department of Electronic Science and Engineering, Kyoto University), Akira Sugawara (Bio-Nano Electronics Research Center, Toyo University), Tsutomu Watahiki (Wako Pure Chemical Industries, Ltd.), Kuniaki Okamoto (Wako Pure Chemical Industries, Ltd.), Takahiro Kiyosu (Wako Pure Chemical Industries, Ltd.), Kazumi Matsushige (Department of Electronic Science and Engineering, Kyoto University), Yasuo Wada (Bio-Nano Electronics Research Center, Toyo University)

キーワード: Hall-effect measurement，micro-scale gap electrode，organic semiconductor，carrier concentration，PEDOT

要約(英語): A new micro-electrode structure for Hall-effect measurements of organic semiconductor layers was proposed. The equations for the Hall-effect measurements based on the van der Pauw method indicate that narrower electrode gaps can decrease the resistance between contact points and enable Hall-effect measurement even for higher resistance materials such as organic semiconductors. According to this “scaling rule”, we fabricated a new electrode chip which consists of four small finger electrodes with a gap of micrometer-scale between diagonally opposite electrodes. In order to demonstrate the validity of this concept, Hall-effect measurements for FeCl3-doped poly(3,4-ethylenedioxythiophene) (PEDOT) was performed using this new electrode structure, revealing that a 10-μm-gap electrode chip is effective for evaluating carrier concentration of down to around 1019cm-3. These Hall electrode chips are quite useful for quantitative analysis of carrier concentration and carrier mobility in organic semiconductor materials.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.9 （2012） 特集：有機半導体－材料・デバイス・評価技術

本誌掲載ページ: 1398-1401 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/132/9/132_1398/_article/-char/ja/