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Conduction Mechanisms and Structure–Property Relationships in High Energy Density Aromatic Polythiourea Dielectric Films
Author(s) -
Burlingame Quinn,
Wu Shan,
Lin Minren,
Zhang Q. M.
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201201110
Subject(s) - materials science , dielectric , thermal conduction , amorphous solid , electric field , electrical conduction , work (physics) , phase (matter) , condensed matter physics , polymer , chemical physics , composite material , optoelectronics , thermodynamics , crystallography , organic chemistry , physics , chemistry , quantum mechanics
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/cm 3 ). 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.