Poly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators.

ABSTRACT: Halide perovskite materials have been recently recognized as promising materials for piezoelectric nanogenerators (PENGs) due to their potentially strong ferroelectricity and piezoelectricity. Here, we report a new method using a poly(vinylidene fluoride) (PVDF) polymer to achieve excellent long-term stable black γ-phase CsPbI₃ and explore the piezoelectric performance on a CsPbI₃@PVDF composite film. The PVDF-stabilized black-phase CsPbI₃ perovskite composite film can be stable under ambient conditions for more than 60 days and over 24 h while heated at 80 °C. Piezoresponse force spectroscopy measurements revealed that the black CsPbI₃/PVDF composite contains well-developed ferroelectric properties with a high piezoelectric charge coefficient (<

SUBMITTER: Zhu W 

PROVIDER: S-EPMC8973101 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature