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    Flexible and stretchable organic materials and devices for application in emerging optoelectronics

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    Emilie Dauzon - Dissertation - Final Draft.pdf
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    Emilie Dauzon - Dissertation - Final Draft
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    Type
    Dissertation
    Authors
    Dauzon, Emilie cc
    Advisors
    Anthopoulos, Thomas D. cc
    Committee members
    De Wolf, Stefaan cc
    Ratier, Bernard
    Vignau, Laurence
    You, Wei
    Goubard, Fabrice
    Amassian, Aram cc
    Plesse, Cédric
    Program
    Material Science and Engineering
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2020-07-02
    Permanent link to this record
    http://hdl.handle.net/10754/666230
    
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    Abstract
    New technologies will require more and more compliant materials capable of conforming to curved surfaces, i.e., able to stretch and mechanically resist body motions for wearable and on-skin applications. In this regard, this work discusses strategies to induce stretchability in materials. We focused our attention on improving the elasticity of transparent conducting electrodes (TCE) based on PEDOT:PSS and semiconductors (active layer) for organic solar cells. Firstly, the introduction of DMSO and Zonyl as additives into PEDOT:PSS was shown to produce highly transparent conducting electrodes (FoM > 35) with low Young’s modulus and high carrier density. We investigated the relationship between the transport properties of PEDOT:PSS and the morphology and microstructure of its films. The combination of the two additives enhances the fibrillary nature and the aggregations of both PEDOT and PSS components of the films. Secondly, stretchable TCEs based on PEDOT:PSS were fabricated using an innovative approach that combines an interpenetrated polymer network-based on polyethylene oxide and Zonyl. The presence of three-dimensional matrix provided high electrical conductivity, elasticity, and mechanical recoverability. The potential of this electrode was demonstrated with indium-tin-oxide (ITO)-free solar cells with a power conversion efficiency similar to ITO. Finally, the research was completed by integrating a cross-linker or an elastomer into the active layer to enhance its stretchability while maintaining excellent photovoltaic performance. In particular, SEBS elastomer exhibited a tailored elasticity with various fullerene and non-fullerene blends: P3HT:PC61BM, PCE10:PC71BM and PCE13:IT-4F. This versatile approach highlights the ease of manufacturing and scalability achieved by the solution casting processes along with a high compatibility of acceptor and donor blends.
    Citation
    Dauzon, E. (2020). Flexible and stretchable organic materials and devices for application in emerging optoelectronics. KAUST Research Repository. https://doi.org/10.25781/KAUST-L27W1
    DOI
    10.25781/KAUST-L27W1
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-L27W1
    Scopus Count
    Collections
    Dissertations; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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