[20p-PA3-1~42] 12.3 Functional Materials and Novel Devices

[20p-PA3-30] Secondary doping for freeze-dried PEDOT:PSS with supercritical CO2 and its thermoelectricity

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:thermoelectricity, conductive polymer, PEDOT:PSS

Conductive polymer PEDOT:PSS is known as an organic material with high thermoelectricity.
Thermoelectric devices are almost researched in the state of thin film, but we used freeze-dried PEDOT:PSS in order to maintain temperature gradient and to reduce the cost of materials. Furthermore, we achieved enhancement of conductivity and ZT of freeze-dried PEDOT:PSS with little shrinkage by impregnating supercritical CO₂ with methanol as secondary dopant.