Self-Powered Piezoelectric Nanogenerator Based on Wurtzite ZnO Nanoparticles for Energy Harvesting Application

We report the synthesis procedure of hexagonal wurtzite structure of zinc oxide (ZnO) nanoparticles via hydrothermal route to use as a main component of piezoelectric nanogenerator. The ZnO nanoparticles are dispersed into polydimethylsiloxane (PDMS) to fabricate the high performance flexible piezoelectric nanogenerator (FPNG).The output voltage and power generated from the FPNG is around 20 V and 20 μW respectively. It is also capable to charge up the capacitors within very short span of time (for example, about 2V is reached at 96s). It is demonstrated that the output power generated from the FPNG can directly drive several commercial blue light emitting diodes (LEDs)that ensuring the applicability as a self-powered energy harvester.