Understanding of electrical conduction mechanism in conductive polymer: Observation of low-temperature resistivity and nanoscale electronic state

• Project/Area Number: 25400352
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyushu Sangyo University
• Principal Investigator: NISHIZAKI Terukazu 九州産業大学, 工学部, 准教授 (90261510)
• Co-Investigator(Kenkyū-buntansha): SASAKI Takahiko 東北大学, 金属材料研究所, 教授 (20241565)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 導電性高分子 / 電気伝導 / 走査トンネル顕微鏡 / ナノ構造 / 低温 / 高分子構造・物性 / 低温物性 / 走査プローブ顕微鏡 / 電気抵抗 / 強磁場

Outline of Final Research Achievements

In order to study a mechanism of electrical conductivity in the conductive polymer poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT/PSS), measurements of low-temperature electrical resistivity and scanning tunneling microscopy (STM) have been performed in ethylene glycol added PEDOT/PSS film. The edge-casting PEDOT/PSS film shows the low resistivity ～1 mΩcm and the orientation effect with the anisotropy ～2.2. STM results indicate that the film consists of fibril microstructures (width: ～3 nm) and the conductivity increases along the fibril. On the other hand, the drop-casting film and spin-coated film show randomly oriented grain structure (20-40 nm) without any orientation effect.

Research Products

• [Journal Article] Orientation of Conductive Polymer PEDOT:PSS Films Prepared Under Magnetic Field (2014)
  • Author(s): M.A. Guziak, Y. Honma, K. Hashimoto, T. Nishizaki, K. Watanabe, T. Sasaki
  • Journal Title: JPS Conf. Proc. Volume: 1 Pages: 0120511-4
  • Peer Reviewed
• [Journal Article] Electrical Conductivity of PEDOT:PSS Film Prepared through Organic Compound Addition (2013)
  • Author(s): M.A. Guziak, T. Nishizaki, Y. Honma, K. Watanabe, and T. Sasaki
  • Journal Title: Trans. Mat. Res. Soc. Japan Volume: 38 Pages: 363-367
  • Peer Reviewed
• [Presentation] 導電性高分子PEDOT/PSS膜の走査トンネル顕微鏡観測 (2016)
  • Author(s): 内田翔悟，西嵜照和，阿久根忠博，本間優太，佐々木孝彦
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学泉キャンパス (仙台市)
  • Year and Date: 2016-03-19
• [Presentation] Electrical Conduction Properties in Oriented Films of Conductive Polymer PEDOT/PSS (2015)
  • Author(s): Y. Honma, N. Asano, Y. Kato, K. Itoh, M. Guziak, T. Nishizaki, H. Masunaga, A. Fujiwara, and T. Sasaki
  • Organizer: The International Chemical Congress of Pasific Basin Societies 2015 (Pasifichem 2015)
  • Place of Presentation: Honolulu, Hawaii, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] 導電性高分子PEDOT/PSS配向膜の構造・電気伝導特性 (2015)
  • Author(s): 本間優太，浅野奈月，加藤悦久，伊藤桂介，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 第25回日本MRS年次大会 －技術革新を先導する先進材料研究－
  • Place of Presentation: 横浜市開港記念会館 (横浜市)
  • Year and Date: 2015-12-10
• [Presentation] 導電性高分子PEDOT/PSSのSTM観測 (2015)
  • Author(s): 内田翔悟，西嵜照和，阿久根忠博，本間優太，佐々木孝彦
  • Organizer: 九州産業大学総合機器センター第6回研究発表会
  • Place of Presentation: 九州産業大学 (福岡市)
  • Year and Date: 2015-11-02
• [Presentation] Control of PEDOT Orientation in Conductive Polymer PEDOT:PSS Film through the Magnetic Effects on Oxygen and Nitrogen Gas (2015)
  • Author(s): M.A. Guziak, K. Hashimoto, T. Nishizaki, Y. Honma, K. Watanabe, and T. Sasaki
  • Organizer: The 20th International Conference on Magnetism (ICM2015)
  • Place of Presentation: Barcelona, Spain
  • Year and Date: 2015-07-05
  • Int'l Joint Research
• [Presentation] 導電性高分子PEDOT/PSS厚膜の成膜条件と配向特性の相関 (2015)
  • Author(s): 本間優太，浅野奈月，加藤悦久，伊藤桂介，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 第129回金属材料研究所講演会
  • Place of Presentation: 東北大学金属材料研究所 (仙台市)
  • Year and Date: 2015-05-29
• [Presentation] 導電性高分子PEDOT/PSSの成膜条件と配向特性の相関 (2015)
  • Author(s): 本間優太，浅野奈月，加藤悦久，伊藤桂介，Milena A. Guziak，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 日本物理学会 第70回年次大会
  • Place of Presentation: 早稲田大学早稲田キャンパス (東京都新宿区)
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Development of Small-Sized STM Head for Low-T$ and High-H Measurements (2015)
  • Author(s): T. Nishizaki
  • Organizer: International Workshop on Scanning Tunneling Microscopy for PPMS
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2015-01-09
  • Invited
• [Presentation] 導電性高分子PEDOT/PSS配向膜の構造解析 (2014)
  • Author(s): 本間優太，浅野奈月，加藤悦久，伊藤桂介，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 第128回東北大学金属材料研究所講演会
  • Place of Presentation: 東北大学金属材料研究所 (宮城県仙台市)
  • Year and Date: 2014-11-27 – 2014-11-28
• [Presentation] 配向制御を行った導電性高分子PEDOT/PSS膜の構造解析 (2014)
  • Author(s): 本間優太，Milena A. Guziak，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 日本物理学会 2014年秋季大会
  • Place of Presentation: 中部大学春日井キャンパス (愛知県春日井市)
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Oriented Film Preparation of Highly Conductive Polymer PEDOT/PSS (2014)
  • Author(s): Y. Honma，M.A. Guziak, H. Masunaga, A. Fujiwara, T. Nishizaki, K. Watanabe, T. Sasaki
  • Organizer: 22nd International Conference for Science and Technology of Synthetic Metals (ICSM2014)
  • Place of Presentation: Turku, Finland
  • Year and Date: 2014-06-30 – 2014-07-05
• [Presentation] 配向制御による導電性高分子PEDOT/PSS膜の高電気伝導化 (2014)
  • Author(s): 本間優太，Milena A. Guziak，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 第127回東北大学金属材料研究所講演会
  • Place of Presentation: 東北大学金属材料研究所 (宮城県仙台市)
  • Year and Date: 2014-05-27 – 2014-05-28
• [Presentation] 配向制御を行った導電性高分子PEDOT/PSS膜の電気伝導特性 (2014)
  • Author(s): 本間優太，Milena A. Guziak，西嵜照和，増永啓康，藤原明比古，佐々木孝彦
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] Preparation of Highly Conductive PEDOT:PSS Film under Magnetic Field (2013)
  • Author(s): M. A. Guziak, T. Nishizaki, Y. Honma, K. Hashimoto, H. Masunaga, A. Fujiwara, K. Watanabe, and T. Sasaki
  • Organizer: The 12th Asia Pasific Physics Conference of AAPPS (APPC12) and The third Asia-Europe Physics Summit (ASEPS3)
  • Place of Presentation: Chiba, Japan
• [Presentation] 導電性高分子PEDOT/PSS膜の強磁場下電気伝導特性 (2013)
  • Author(s): 本間優太，西嵜照和，M. A. Guziak，佐々木孝彦
  • Organizer: 第126回金属材料研究所講演会
  • Place of Presentation: 東北大学金属材料研究所
• [Presentation] 導電性高分子PEDOT/PSS膜の低温磁場中電気伝導特性 (2013)
  • Author(s): 本間優太，西嵜照和，M.A. Guziak，佐々木孝彦
  • Organizer: 日本物理学会 2013年秋季大会
  • Place of Presentation: 徳島大学常三島キャンパス
• [Presentation] 導電性高分子PEDOT/PSS厚膜の低温電気伝導特性 (2013)
  • Author(s): 本間優太，西嵜照和，M. A. Guziak，佐々木孝彦
  • Organizer: 第125回金属材料研究所講演会
  • Place of Presentation: 東北大学金属材料研究所
• [Remarks] 九州産業大学 教員紹介 (西嵜照和)
  • URL: http://ras.kyusan-u.ac.jp/professor/0000749/profile.html
• [Remarks] 九州産業大学 教員紹介 (西嵜照和)
  • URL: http://ras.kyusan-u.ac.jp/professor/0000749/profile.html