Title :
Charge transport in polyethylene nano dielectrics
Author_Institution :
Sch. of Electron., Bangor Univ., Bangor, UK
Abstract :
It is emphasized that polyethylene prepared from the melt is a natural nano-dielectric having contrasting conductive crystallites and resistive amorphous regions of nanometric dimensions. The conductive properties when extrinsic holes are introduced are briefly explored. It is predicted that long-range quantum mechanical tunneling through the amorphous regions occurs and is responsible for a field-dependent hole mobility and consequent packet phenomena. It is predicted that nano particles can be naturally accommodated in the amorphous regions and can severely change hole tunneling with a consequent dramatic reduction in the conductivity and related spacecharge phenomena in agreement with published experiments.
Keywords :
amorphous state; electrical conductivity; hole mobility; nanocomposites; nanoparticles; polymers; space charge; tunnelling; charge transport; conductive crystallites; conductive properties; extrinsic holes; field-dependent hole mobility; long-range quantum mechanical tunneling; packet phenomena; polyethylene nano dielectrics; resistive amorphous regions; space-charge phenomena; Conductivity; Dielectrics; Nanoparticles; Polyethylene; Space charge; Tunneling; Polyethylene; charge packets; electrical conduction; nano composite; tunneling;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2013.004173