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High uniformity and stability of graphene transparent conducting electrodes by dual-side dopingoa mark
  • Ji Im, Min ;
  • Hyeong, Seok Ki ;
  • Lee, Jae Hyun ;
  • Kim, Tae Wook ;
  • Lee, Seoung Ki ;
  • Young Jung, Gun ;
  • Bae, Sukang
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Publication Year
2022-12-15
Journal
Applied Surface Science
Publisher
Elsevier B.V.
Citation
Applied Surface Science, Vol.605
Keyword
Chemical stabilityDual-side dopingFigure of MeritNafionp-dopingSheet resistanceThermal stability
Mesh Keyword
Chemical dopingChemically dopedDual-side dopingFigure of meritHigh conductivityHigh uniformityNafionsP-dopingTransparent conducting electrodesTransparent conductive electrodes
All Science Classification Codes (ASJC)
Condensed Matter PhysicsSurfaces and InterfacesSurfaces, Coatings and Films
Abstract
Chemical doping is an efficient method to tailor the electrical properties of graphene transparent conductive electrodes. In general, chemically doped graphene by single-side exhibits a drawback of high conductivity but inferior uniformity and stability after exposure to chemical solvent or annealing process. Here, we report a highly uniform and stable graphene transparent conducting electrodes doped by dual-side with macro- and small molecular organic dopants such as Nafion on the top and benzimidazole (BI) at the bottom. The electrical properties, optical properties, and stability were compared depending on the top-side dopants. Dual-side doping showed a higher work function (>5 eV), and a uniform low sheet resistance (less than 200 Ω sq−1) compared to the single-side doping. The Dual-N exhibited a relatively higher figure of merit (FoM, σDC/σop ∼ 62.38), a smoother surface (Rrms ∼ 0.54 nm), and a superior thermal/chemical stability than the Dual-A, showing the potential possibility as alternative electrodes for next-generation flexible electronic devices.
ISSN
0169-4332
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/32938
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85138442229&origin=inward
DOI
https://doi.org/2-s2.0-85138442229
Journal URL
http://www.journals.elsevier.com/applied-surface-science/
Type
Article
Funding
G.Y. Jung was partially supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) [NRF- 2022R1A2B5B01002038 ]. S. Bae was financially supported by the Korea Institute of Science and Technology (KIST) Institutional Program, the Ministry of Trade, Industry & Energy of Korea ( 20011317 ), and the National Research Council of Science & Technology (NST) grant [ CRC-20-01-NFRI ].
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