MAGNETIC ALIGNMENT OF CO-DOPED ZINC OXIDE NANORODS FOR STRETCHABLE ENERGY HARVESTER

초록

In this paper, we propose a skin attachable piezoelectric energy harvester which was implemented by using magnetic alignment of cobalt (Co)-doped zinc oxide nanorods (ZnO NRs) to enhance the piezoelectric effect. Co-doped ZnO NRs with ferromagnetic property can be easily obtained by hydrothermal process, and their uni-directional alignment can be obtained by applying external magnetic field. In addition, double layers of platinum (Pt) and graphene were deposited on the surface as a flexible and stretchable electrode with high electric conductivity. The maximum open-circuit voltage of 17.4 Vp-p, and short-circuit current of 0.26 mu A was obtained at 4 Hz folding/unfolding operations.

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