The effect of reduced graphene oxide (RGO) addition on the dielectric and piezoelectric behavior of the polyvinylidene fluoride (PVDF) films was studied. Dielectric constant increased by four times and piezoelectric coefficient also increased twice by the addition of RGO in the PVDF films. Based on capacitance–voltage and ellipsometry measurements and the Kramers–Kronig transformation, it is concluded that the enhanced dielectric and piezoelectric properties of the PVDF/RGO films resulted from the increased orientational polarization due to a phase transition from nonpolar crystalline α phase to polar crystalline β phase in the PVDF structure.
Bibliographical noteFunding Information:
This research was supported by the Priority Research Centers Program (2009-0093823) and the Basic Science Research Program (NRF-2016R1D1A1B03936347) through the National Research Foundation of Korea funded by the Ministry of Education.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)