Synthesis and Characterization of a Copolymer Based on Thiazolothiazole and Dithienosilole for Polymer Solar Cells

Authors

  • Maojie Zhang,

    1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
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  • Xia Guo,

    1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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  • Yongfang Li

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    • Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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Abstract

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A new D–A copolymer,PDTSTTz, has been synthesized based on a dithienosilole donor unit and a thiazolothiazole acceptor unit for application as a donor material in polymer solar cells (PSCs). The power conversion efficiency of the PSC based on PDTSTTz/PC70BM (1:1, w/w) with thermal annealing at 100 °C for 15 min reached 5.59% with JSC = 11.9 mA cm−2, VOC = 0.77 V, and FF = 0.61, under the illumination of AM1.5, 100 mW cm−2.

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