Year: 2024
Type: article
Abstract: Recently, sustainable energy sources have become a top concern worldwide to meet the increasing power demand. Simultaneously, micro-sensors, particularly wearable biosensors, environmental monitoring, space monitoring, etc., are becoming integral to our daily lives. Therefore, harvesting low power on a large scale is crucial, given the substantial demand for low-powered sensors in various applications. Piezoelectric energy harvesting can meet the need for consistent, low-power energy by scavenging mechanical energy from the surroundings. The inclusion of sol-gel derived propylammonium lead iodide (C3H7NH3PbI3) in polyvinylidene difluoride (PVDF) significantly enhances the ferroelectric phase content (β phase, approximately 66.7%) of the film. This composite has been used to fabricate a piezoelectric energy harvester (PPEH) that generates ~ 45 V open circuit voltage (VOC) and 17.8 µA/cm² short circuit current (JSC) under free-hand hammering. This performance is substantially higher compared to a PPEH made of neat PVDF. The flexibility of the PPEH offers an added advantage, making it suitable for use as a wearable biosensor. Additionally, the photo-active piezo response of the photodetector made from this composite is remarkable, making it effective as a photodetector.
Source: Emergent Materials
Authors: Payal Sengupta, Dipankar Sahoo, Ashik Ikbal, Ruma Ray
Institution: Jadavpur University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,890
Funder: University Grants Commission
OpenAlex ID: W4404931641