Carrier transport of conducting polymer PEDOT:PSS investigated by temperature dependence of THz and IR spectra

Yusuke Yamada, Masatsugu Yamashita, Takahiko Sasaki, Hidenori Okuzaki, Chiko Otani

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

In this study, we have investigated the temperature dependence of the optical conductivity of poly(3,4-ethylenedioxythiophene): poly(styrene-sulfonate) (PEDOT:PSS) films measured by the combination of THz and infrared-visible spectroscopy to understand the effect of the ethylene glycol (EG) on the carrier transport. The addition of EG to the PEDOT:PSS colloidal dispersion significantly improve the dc conductivity of PEDOT:PSS film due to the increase of the crystallinity and the change of the morphology in PEDOT:PSS films. The temperature dependences of THz conductivities was discussed using the localization modified Drude (LD) model describing the weakly localized carrier behavior and the series sequence of free and hopping carrier (SSFHC) model. LD model analysis suggests that the carrier delocalization by the addition of EG improve the carrier mobility and DC conductivity. On the other hand, SSFHC model revealed that the macroscopic carrier transport of PEDOT:PSS was dominated by the hopping conduction between PEDOT nano-crystals where the metallic transport were realized.

本文言語English
ホスト出版物のタイトル2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2014
出版社IEEE Computer Society
ISBN(電子版)9781479938773
DOI
出版ステータスPublished - 2014 11 13
イベント39th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2014 - Tucson, United States
継続期間: 2014 9 142014 9 19

出版物シリーズ

名前International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
ISSN(印刷版)2162-2027
ISSN(電子版)2162-2035

Other

Other39th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2014
国/地域United States
CityTucson
Period14/9/1414/9/19

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 電子工学および電気工学

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