Perovskite methylammonium lead bromide incorporated poly (vinylidene fluoride) composite for flexible cantilever based self-powered vibration sensor

The development of a new kind of self-powered vibration sensor (SPVS) with cantilever structure made with polymeric piezoelectric material for low frequency vibrations detection is demonstrated. Methylammonium lead bromide (MAPB) particles incorporated poly(vinylidene fluoride) (PVDF) composite film exhibiting significant yield of piezoelectric beta-phase and outstanding flexibility that resulting superior mechanical energy harvesting behaviour. The composite films also possess relatively increased dielectric constant than PVDF film. The resonance frequency and amplitude of damping vibrations have been determined utilizing the output voltage of the SPVS without any power source. Thus, SPVS might be useful in detecting low frequency vibrations in self-powered mode.