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White Electroluminescence from a Phosphonate-Functionalized Single-Polymer System with Electron-Trapping Effect

Authors

  • Xin Guo,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Chuanjiang Qin,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Yanxiang Cheng,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Zhiyuan Xie,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Yanhou Geng,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Xiabin Jing,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Fosong Wang,

    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Lixiang Wang

    Corresponding author
    1. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China)
    • State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (P.R. China) and Graduate School of Chinese Academy of Sciences Beijing 100039 (P.R. China).
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Abstract

A novel strategy for obtaining white electroluminescence (EL) is based on the mechanism of electron trapping on host. Phosphonate-functionalized polyfluorene is chosen as host owing to its strong electron affinity. Electrons are confined mostly by host pendants in the EL process, which suppresses charge transfer from host to dopant. White EL with CIE coordinates of (0.34,0.35) is achieved.

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