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Manipulating the Crystallization of Methanofullerene Thin Films with Polymer Additives

Authors

  • Lidong Zheng,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Graduate University of the Chinese Academy of Sciences, Changchun 130022, PR China
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  • Jiangang Liu,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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  • Yue Sun,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Graduate University of the Chinese Academy of Sciences, Changchun 130022, PR China
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  • Yan Ding,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Graduate University of the Chinese Academy of Sciences, Changchun 130022, PR China
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  • Yanchun Han

    Corresponding author
    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
    • State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
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Abstract

Trace amount (1% to 5%) of polymers [polystyrene (PS), poly(methyl methacrylate) (PMMA), and poly(3-hexylthiophene) (P3HT)] are utilized as additives to manipulate the cold crystallization of [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) thin films. Highly crystalline PCBM films made up of well-connected domains and isolated spherulites with tunable size are produced by adjusting the type, molecular weight, and amount of polymer additives. In the nucleation stage, the polymer additives are demonstrated to have a depressing effect on PCBM nucleation. In the growth stage, we suggest that the PCBM growth rate is determined by PCBM molecular diffusion, which is demonstrated to have close correlations with the molecular mobility and crystallinity of the polymer.

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