A high performance flexible two dimensional vertically aligned ZnO nanodisc based piezoelectric nanogenerator surface passivation.

Herein, we present the growth of pristine vertically aligned flexible two dimensional (2D) pure ZnO nanodiscs a simple seed assisted solution route and their use in the fabrication of a piezoelectric nanogenerator. The preferred growth direction and morphology of wurtzite ZnO nanodiscs were investigated using X-ray diffraction and field emission scanning electron microscopy (FESEM) studies. A flexible piezoelectric nanogenerator was fabricated using the vertically aligned ZnO nanodiscs as the active piezoelectric material and a carbon nanotube-polydimethylsiloxane (CNT : PDMS) film as the top electrode.