Abstract
This study proposes a novel approach to fabricate self-assembled ultrathin β-PVDF nano lamellae (PVDF-NL) directly over a sp2 hybridized van der Waals (vdW) carbon lattice support with a remarkable thickness of 8 nm. Needle shaped PVDF-NL were successfully crystallized on thermally reduced graphene oxide sheets (rGO) via a simple melting and recrystallization method. Subsequently, switchable polarization is demonstrated in PVDF using piezoresponse force microscopy (PFM) resulting in a large piezoelectric coefficient (d33) of −28.08 ± 2.26 pm/V. This work delivers an exceptional technique to fabricate and tailor the crystal phases of PVDF using two-dimensional (2D) reduced graphene oxide lattice with a large piezoresponse, opening new avenues in 2D ferroelectric polymers for the usage in nanoelectronic devices.
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