biostudies-literatureUnknown7(12)Zhu WNatural Sciences and Engineering Research Council of CanadaUniversity of WaterlooHalide 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 (<ACS omega10559-10567https://www.ebi.ac.uk/biostudies/studies/S-EPMC8973101biostudies-literaturePoly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators.PMC8973101Rana MMKhan AAGautheron-Bernard RTanguy NRYan NAbabou-Girard STurban PZhu WBan DfalsePoly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators.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 (<2022-01-01T00:00:00Z2022 Mar2025-04-05T16:00:16.082Z2025-04-05T16:00:16.082ZS-EPMC89731013538230110.1021/acsomega.2c00091