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International Heat Transfer Conference 15

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

Thermal Transport Property of PEDOT-PSS Thin Films

Harutoshi Hagino
Department of Mechanical and Control Engineering, Kyushu Institute of Technology

Masahiro Hokazono
Department of Electrical Engineering, Tokyo University of Science, Yamaguchi Daigaku-dori, Sanyo-Onoda, Yamaguchi 756-0884 Japan

Hiroaki Anno
Department of Electrical Engineering, Tokyo University of Science, Yamaguchi Daigaku-dori, Sanyo-Onoda, Yamaguchi 756-0884 Japan

Naoki Toshima
Department of Applied Chemistry, Tokyo University of Science, Yamaguchi 1-1-1 Daigaku-dori, Sanyo-Onoda, Yamaguchi 756-0884 Japan

Koji Miyazaki
Department of Mechanical and Control Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan

DOI: 10.1615/IHTC15.tel.009096
pages 7999-8006


KEY WORDS: Thermoelectric devices, Thermophysical properties,

Abstract

In this study, we fabricated PEDOT-PSS thin films mixed with 3 − 5 vol. % of dimethyl sulfoxide (DMSO) or ethylene glycol (EG). We then heated the films using periodic laser heating and measured their in-plane and cross-plane thermal diffusivities. We also measured how their thermal conductivity depended on film thickness, temperature, and dispersion. The in-plane thermal conductivities of the EG-mixed films we measured were higher than those of the DMSO-mixed films. In contrast, the cross-plane thermal conductivities of the EG-mixed and DMSO-mixed films were similar. The in-plane thermal conductivities were higher than the cross-plane thermal conductivities. These results suggest that the thermal transport properties of the PEDOT-PSS film are anisotropic and affected by dispersion.

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