Studies on the thermoelectric properties of PEDOT:PSS

• Project/Area Number: 25888025
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Device related chemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: WEI Qingshuo 独立行政法人産業技術総合研究所, 材料・化学領域 ナノ材料研究部門, 研究員 (30709564)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 有機半導体 / 熱電変換 / 異方性 / Conducting Polymer / Anisotropicity / Thermoelectric / Anisotropic / Organic Semiconductors / Thermal Conductivity / Seebeck Coefficient / Electrical Conductivity

Outline of Final Research Achievements

In this study, we reported general methods for studying the thermoelectric properties of a polymer film in both the in-plane and through-plane directions. The bench-mark PEDOT:PSS films have highly anisotropic carrier transport properties and thermal conductivity. The anisotropic carrier transport properties and thermal conductivity can be explained by the lamellar structure of the PEDOT:PSS films where the PEDOT nanocrystals could be isolated by the insulating PSS in the through-plane direction. This study highlights the parameters for figure-of-merit calculation in organic thermoelectric materials must be obtained on the same direction.

Research Products

• [Journal Article] Synthesis and thermopower of poly(3-methoxythiophene-2,5-diylco-3,4-ethylenedioxythiophene-2,5-diyl)/tosylate (2015)
  • Author(s): Qingshuo Wei, Yoshinori Sugihara, Taro Tanabe, Masakazu Mukaida, Kazuhiro Kirihara, Yasuhisa Naitoh, Takao Ishida
  • Journal Title: Polymer Volume: 66 Pages: 38-42
  • DOI: 10.1016/j.polymer.2015.04.001
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Recent Progress on PEDOT-Based Thermoelectric Materials (2015)
  • Author(s): Qingshuo Wei, Masakazu Mukaida, Kazuhiro Kirihara, Yasuhisa Naitoh and Takao Ishida
  • Journal Title: Materials Volume: 8 Issue: 2 Pages: 732-750
  • DOI: 10.3390/ma8020732
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Thermoelectric power enhancement of PEDOT:PSS in high-humidity conditions (2014)
  • Author(s): Qingshuo Wei, Masakazu Mukaida, Kazuhiro Kirihara, Yasuhisa Naitoh, and Takao Ishida
  • Journal Title: Applied Physics Express Volume: 7 Issue: 3 Pages: 031601-031601
  • DOI: 10.7567/apex.7.031601
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Experimental Studies on the Anisotropic Thermoelectric Properties of Conducting Polymer Films (2014)
  • Author(s): Qingshuo Wei , Masakazu Mukaida , Kazuhiro Kirihara , and Takao Ishida
  • Journal Title: ACS Macro Letters Volume: 3 Issue: 9 Pages: 948-952
  • DOI: 10.1021/mz500446z
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Studies on the Anisotropic Thermoelectric Properties of PEDOT:PSS films (2014)
  • Author(s): Qingshuo Wei , Masakazu Mukaida , Kazuhiro Kirihara , and Takao Ishida
  • Organizer: The 20th China-Japan Bilateral Symposium on Intelligent Electrophotonic Materials and Molecular Electronics 2014
  • Place of Presentation: Chengdu, China
  • Year and Date: 2014-09-22
• [Presentation] Morphology, Composition and Thermoelectric Properties of PEDOT:PSS films (2013)
  • Author(s): Qingshuo Wei, Masakazu Mukaida, Kazuhiro Kirihara and Takao Ishida
  • Organizer: The CEMS International Symposium on Supramolecular Chemistry & Functional Materials 2013
  • Place of Presentation: The University of Tokyo (Hongo, Tokyo)
• [Presentation] Studies on the Thermoelectric Properties of PEDOT:PSS (2013)
  • Author(s): Qingshuo Wei, Masakazu Mukaida, Kazuhiro Kirihara, Yasuhisa Naitoh and Takao Ishida
  • Organizer: 2013 MRS Fall Meeting & Exhibit
  • Place of Presentation: Boston, US