[8a-Z13-1~9] 12.3 Functional Materials and Novel Devices

[8a-Z13-5] Secondary doping for PEDOT:PSS aerogel with supercritical CO₂ and its thermoelectric properties

〇Naoya Yanagishima¹, Shinji Kanehashi¹, Kenji Ogino², Takeshi Shimomura¹ (1.Grad. Sch. of Eng., Tokyo Univ. of Agri. and Tech., 2.Grad. Sch. of BASE., Tokyo Univ. of Agri. and Tech.)

Keywords:conductive polymer, thermoelectric conversion, PEDOT:PSS

Conductive polymer PEDOT:PSS is known as an organic material with high thermoelectric (TE) properties. Recently, there have been some reports of the thermoelectric properties of aerogel structures of PEDOT:PSS with low thermal conductivity. In this report, we fabricated PEDOT:PSS aerogels by a freeze-drying and applied supercritical CO₂ atmosphere for the secondary doping. This secondary doping caused little shrinkage of PEDOT:PSS aerogels with low thermal conductivity and thick structure, which are the advantage for maintaining temperature. Therefore, we achieved the fabrication method of PEDOT:PSS aerogel with keeping its unique porous structure for TE materials.