Conduction Mechanisms and Structure–Property Relationships in High Energy Density Aromatic Polythiourea Dielectric Films

Authors

  • Quinn Burlingame,

    1. The Department of Electrical Engineering & The Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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  • Shan Wu,

    Corresponding author
    1. The Department of Electrical Engineering & The Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
    • The Department of Electrical Engineering & The Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA.
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  • Minren Lin,

    1. The Department of Electrical Engineering & The Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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  • Q. M. Zhang

    1. The Department of Electrical Engineering & The Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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Abstract

Aromatic polythiourea (ArPTU) is an amorphous, polar, glass-phase dielectric polymer which features extremely high dielectric breakdown strength (>1.1 GV/m), low loss at high electric fields (10% at 1.1 GV/m), and a high maximum electrical energy density (>24 J/cm3). This work presents a study of the structure–property relationships and electrical conduction in ArPTU, and offers a phenomenological explanation for the experimentally observed high-field loss characteristics which facilitate the excellent energy storage properties.

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