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Conjugated Zwitterionic Polyelectrolytes and Their Neutral Precursor as Electron Injection Layer for High-Performance Polymer Light-Emitting Diodes

Authors

  • Chunhui Duan,

    1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China
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  • Lei Wang,

    1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China
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  • Kai Zhang,

    1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China
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  • Xing Guan,

    1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China
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  • Fei Huang

    Corresponding author
    1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China
    • Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, P. R. China.
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Abstract

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Conjugated zwitterionic polyelectrolytes with free mobile ions, good alcohol solubility, and excellent electron injection ability are developed. PLEDs based on a Al cathode with a conjugated zwitterionic polyelectrolytes electron injection layer showed more than 70 times higher efficiency than that of bare Al cathode devices.

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