Reduction of contact resistance between conducting polymer PEDOT and metal-electrode toward the development of organic Peltier device

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14105
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Device related chemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Kirihara Kazuhiro 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (70392610)
• Co-Investigator(Kenkyū-buntansha): 石田 敬雄 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究グループ長 (40281646)
• Co-Investigator(Renkei-kenkyūsha): MUKAIDA Masakazu 産業技術総合研究所, ナノ材料研究部門, 主任研究員 (70358141) ; WEI Qingshuo 産業技術総合研究所, ナノ材料研究部門, 主任研究員 (30709564)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 導電性高分子 / 接触抵抗 / 熱電変換

Outline of Final Research Achievements

Power output of an organic thermoelectric module using conducting polymer PEDOT:PSS is significantly reduced by a high contact resistance between the PEDOT:PSS and metal electrode. By chemical treatment of a surface of the PEDOT:PSS film, We successfully decreased the specific contact resistance (rc) between PEDOT:PSS and Ag paste to 1/1000 of typical value of rc before this project. In addition, we tried to control the work function of PEDOT by using a self-assembled monolayer on the metal-electrode surface. The rc between PEDOT:PSS and atomically flat surfaces of Au metal such as a single-crystal or laser-assisted fabrication of deposited film were also measured.

Free Research Field

ナノ材料科学