TY  - GEN
A1  - Nguyen, Quyet Doan
A1  - Wang, Jingwen
A1  - Rychkov, Dmitry
A1  - Gerhard, Reimund
T1  - Depth Profile and Transport of Positive and Negative Charge in Surface (2-D) and Bulk (3-D) Nanocomposite Films
T2  - 2nd International Conference on Electrical Materials and Power Equipment (ICEMPE 2019)
N2  - In the present study, the charge distribution and the charge transport across the thickness of 2- and 3-dimensional polymer nanodielectrics was investigated. Chemically surface-treated polypropylene (PP) films and low-density polyethylene nanocomposite films with 3 wt % of magnesium oxide (LDPE/MgO) served as examples of 2-D and 3-D nanodielectrics, respectively. Surface charges were deposited onto the non-metallized surfaces of the one-side metallized polymer films and found to broaden and to thus enter the bulk of the films upon thermal stimulation at suitable elevated temperatures. The resulting space-charge profiles in the thickness direction were probed by means of Piezoelectrically-generated Pressure Steps (PPSs). It was observed that the chemical surface treatment of PP which led to the formation of nano-structures or the use of bulk nanoparticles from LDPE/MgO nanocomposites enhance charge trapping on or in the respective polymer films and also reduce charge transport inside the respective samples.
KW  - LDPE nanocomposites
KW  - MgO nanoparticles
KW  - Space charge
KW  - Charge transport
KW  - Charge stability
KW  - Acoustic probing of electric-field profiles
KW  - Piezoelectrically generated Pressure Steps (PPSs)
Y1  - 2019
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/50587
SN  - 978-1-5386-8434-4
SN  - 978-1-5386-8435-1
SP  - 298
EP  - 300
PB  - IEEE
CY  - New York
ER  -