Design and characteristics of two-dimensional piezoelectric nanogenerators

Abstract

In the last decades, increasing interest in piezoelectric material has opened new horizons in electronic industries and alternative energy fields. In this study, a piezoelectric (ZnO NSs–Na2Ti6O13) were prepared from Zinc Oxid Nanosheets (ZnO NSs) and Disodium Hexa titanate (NTO). The dielectric, harvester performance, and the pyroelectric effect of ZnO NSs – NTO explored experimentally. Under different experimental conditions and mechanisms, the generated voltages had been measured where a quasi-static pressing force was applied at the harvester. In addition, the derived voltage has been rectified when the harvester was mounted over a cantilever beam, where the power density was 0.10 ± 0.1 mW/cm3. Finally, there was further investigation of the pyroelectric property which yielded a maximum pyroelectric coefficient of 30.51 µC/m2 °C at low temperature.

Keywords

• energy harvesting
• heterojunction
• piezoelectric
• zno
• pyroelectric
• sodium titanate