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    Systematic Study on Morphological Development of Blade-Coated Conjugated Polymer Thin Films via In Situ Measurements

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    Systemic_Systemic.pdf
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    1.593Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2021-07-07
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    Type
    Article
    Authors
    Kim, Yeon-Ju
    Lee, Sehyun
    Niazi, Muhammad Rizwan cc
    Hwang, Kyoungtae
    Tang, Ming-Chun
    Lim, Dae-Hee
    Kang, Ji-Sue
    Smilgies, Detlef-M.
    Amassian, Aram cc
    Kim, Dong-Yu
    KAUST Department
    Academic Affairs
    KAUST Solar Center (KSC)
    Material Science and Engineering
    Material Science and Engineering Program
    Office of the VP
    Organic Electronics and Photovoltaics Group
    Physical Science and Engineering (PSE) Division
    Date
    2020-07-07
    Online Publication Date
    2020-07-07
    Print Publication Date
    2020-08-12
    Embargo End Date
    2021-07-07
    Permanent link to this record
    http://hdl.handle.net/10754/664161
    
    Metadata
    Show full item record
    Abstract
    The morphology of conjugated polymer thin films, determined by the kinetics of film drying, is closely correlated with their electrical properties. Herein, we focused on dramatic changes in thin film morphology of blade-coated poly{[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)} caused by the effect of solvent and coating temperature. Through in situ measurements the evolution of polymer aggregates and crystallites, which plays a decisive role in the formation of the charge transporting pathway, was observed in real-time. By combining in situ ultraviolet-visible spectroscopy and in situ grazing-incidence wide-angle X-ray scattering analysis, we could identify five distinct stages during the blade-coating process; these stages were observed irrespective of the solvent and coating temperature used. The five stages are described in detail with a proposed model of film formation. This insight is an important step in understanding the relationship between the morphology of thin polymer films and their charge-transport properties as well as optimizing the structural evolution of thin films.
    Citation
    Kim, Y.-J., Lee, S., Niazi, M. R., Hwang, K., Tang, M.-C., Lim, D.-H., … Kim, D.-Y. (2020). Systematic Study on Morphological Development of Blade-Coated Conjugated Polymer Thin Films via In Situ Measurements. ACS Applied Materials & Interfaces. doi:10.1021/acsami.0c07385
    Sponsors
    The authors would like to thank the Korea Basic Science Institute (KBSI) for AFM measurements.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Materials & Interfaces
    DOI
    10.1021/acsami.0c07385
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsami.0c07385
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsami.0c07385
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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