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Advanced Materials

When Function Follows Form: Effects of Donor Copolymer Side Chains on Film Morphology and BHJ Solar Cell Performance

Authors

  • Jodi M. Szarko,

    1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
    2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
    3. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Jianchang Guo,

    1. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
    2. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
    3. Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, IL 60637 (USA)
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  • Yongye Liang,

    1. Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, IL 60637 (USA)
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  • Byeongdu Lee,

    1. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (USA)
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  • Brian S. Rolczynski,

    1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
    2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
    3. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Joseph Strzalka,

    1. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (USA)
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  • Tao Xu,

    1. Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, IL 60637 (USA)
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  • Stephen Loser,

    1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
    2. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Tobin J. Marks,

    Corresponding author
    1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
    2. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
    • Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
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  • Luping Yu,

    Corresponding author
    1. Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, IL 60637 (USA)
    • Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, IL 60637 (USA).
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  • Lin X. Chen

    Corresponding author
    1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
    2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
    3. Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
    • Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (USA)
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Abstract

Detailed structural organization in organic films are investigated using grazing incidence X-ray scattering (GIXS) methods. The key structural features are revealed and the influence of specific side chain positions and shapes are characterized. A correlation between the fill factor (FF) of the corresponding device and the tightness of the polymer chain stacking inspires a new set of structural parameters for design of materials to optimize device efficiency.

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