Cube shaped FAPbBr3 for piezoelectric energy harvesting devices

Abstract In order to meet the ever-increasing call for alternative energy, a plethora of novel materials have been explored to harvest energies. Amongst them, organic–inorganic halide perovskites belong to a relatively new class of compounds. In this work, we have prepared FAPbBr3 cubes via solution process and explored its candidature in energy harvesting. Piezoelectric nanogenerator (PNG) based on the composite of FAPbBr3 and poly (vinylidene fluoride) (PVDF) showed noticeable output performance. To get benchmark level output response, concertation of perovskite was optimized in composites. PNG fabricated with 3.0 wt% FAPbBr3 in PVDF exhibited an instantaneous output voltage of ~200 V and current of ~650nA. It also showed long cycle stability (10,000 cycles) and durability under robust conditions. Energy generated from the PNG was further utilized to charge a capacitor and light up commercial LEDs. As obtained results are of great importance and open the feasibility of novel smart device using this kind of perovskites.