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Advanced Materials

Morphological Change and Mobility Enhancement in PEDOT:PSS by Adding Co-solvents

Authors

  • Qingshuo Wei,

    Corresponding author
    1. Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
    • Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan.
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  • Masakazu Mukaida,

    Corresponding author
    1. Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
    • Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan.
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  • Yasuhisa Naitoh,

    1. Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
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  • Takao Ishida

    1. Nanosystem Research Institute, National Institute of Advanced Industrial, Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
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Abstract

Adding ethylene glycol (EG) to a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) solution improves the crystallinity of the PEDOT and the ordering of the PEDOT nanocrystals in solid films. The carrier-mobility enhancement is confirmed by using ion-gel transistors combined with in situ UV–vis–NIR spectroscopy.

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