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Extremely stable graphene electrodes doped with macromolecular acid

Author

Listed:
  • Sung-Joo Kwon

    (Pohang University of Science and Technology (POSTECH))

  • Tae-Hee Han

    (Seoul National University
    University of California)

  • Taeg Yeoung Ko

    (Pohang University of Science and Technology (POSTECH))

  • Nannan Li

    (Ulsan National Institute of Science and Technology (UNIST))

  • Youngsoo Kim

    (Seoul National University)

  • Dong Jin Kim

    (Seoul National University
    Seoul National University)

  • Sang-Hoon Bae

    (University of California)

  • Yang Yang

    (University of California)

  • Byung Hee Hong

    (Seoul National University)

  • Kwang S. Kim

    (Ulsan National Institute of Science and Technology (UNIST))

  • Sunmin Ryu

    (Pohang University of Science and Technology (POSTECH))

  • Tae-Woo Lee

    (Seoul National University
    Seoul National University)

Abstract

Although conventional p-type doping using small molecules on graphene decreases its sheet resistance (Rsh), it increases after exposure to ambient conditions, and this problem has been considered as the biggest impediment to practical application of graphene electrodes. Here, we report an extremely stable graphene electrode doped with macromolecular acid (perfluorinated polymeric sulfonic acid (PFSA)) as a p-type dopant. The PFSA doping on graphene provides not only ultra-high ambient stability for a very long time (> 64 days) but also high chemical/thermal stability, which have been unattainable by doping with conventional small-molecules. PFSA doping also greatly increases the surface potential (~0.8 eV) of graphene, and reduces its Rsh by ~56%, which is very important for practical applications. High-efficiency phosphorescent organic light-emitting diodes are fabricated with the PFSA-doped graphene anode (~98.5 cd A−1 without out-coupling structures). This work lays a solid platform for practical application of thermally-/chemically-/air-stable graphene electrodes in various optoelectronic devices.

Suggested Citation

  • Sung-Joo Kwon & Tae-Hee Han & Taeg Yeoung Ko & Nannan Li & Youngsoo Kim & Dong Jin Kim & Sang-Hoon Bae & Yang Yang & Byung Hee Hong & Kwang S. Kim & Sunmin Ryu & Tae-Woo Lee, 2018. "Extremely stable graphene electrodes doped with macromolecular acid," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04385-4
    DOI: 10.1038/s41467-018-04385-4
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    Cited by:

    1. Kamel, Michael S.A. & Oelgemöller, Michael & Jacob, Mohan V., 2024. "Chemical vapor deposition-grown graphene transparent conducting electrode for organic photovoltaics: Advances towards scalable transfer-free synthesis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 203(C).

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