查看文章

Developing highly piezoelectric nanoparticles (NPs) with inherent mechanical-electrical coupling effect is critically important for energy harvesters, self-powered sensors and actuators. Over the past decades, the NPs with a high longitudinal piezoelectric coefficient (d₃₃) were developed for piezoelectric nanogenerators (PENGs) that operate under periodic vertical compression mode. As an alternative, high-performance PENGs can be developed by taking advantage of materials with a superior transverse piezoelectric coefficient (d₃₁). In this work, we successfully synthesized an organic-inorganic hybrid perovskite (OIHP) nanorods (NRs) of (4-aminotetrahydropyran)₂ PbBr₂Cl₂ [(ATHP)₂PbBr₂Cl₂] that exhibits a large d₃₁ of 64.2 pC/N, which is 3 times higher than the well-known poly (vinylidene fluoride) (PVDF) polymer (21 pC/N). A saturated polarization of 5.4 μC/cm² and a piezoelectric voltage coefficient (g₃₃ …