Enhanced dielectric/ferroelectric properties of P(VDF-TrFE) composite films with organic perovskite ferroelectrics. (1st March 2023)

• Record Type: Journal Article
• Authors: Li, Chaoyang; Cai, Yichen; Xie, Yongfa; Sheng, Chenxu; Qin, Yajie; Cong, Chunxiao; Qiu, Zhi-Jun; Liu, Ran; Hu, Laigui
• Is Part Of: Applied physics express. Volume 16:Number 3(2023)
• Publication Date: 2023-03-01
• Subjects: orgainc ferroelectrics -- ferroelectric thin films -- organic ferroelectric composite films -- dielectric properties; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/acc569
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: With excellent stability, flexibility, and piezoelectricity, poly(vinylidene fluoride) (PVDF) and its copolymer [P(VDF-TrFE)] have received much attention. However, the applications for its ferroelectricity still suffer the drawbacks of relative low remanent polarization ( P r ) and high coercive electric field ( E c ). In this work, P(VDF-TrFE) composite films were fabricated with the additive of organic perovskite ferroelectric MDABCO-NH4 I3 . Compared with pure P(VDF-TrFE), the P r increases from 7.17 to 12.7 μ C cm −2, while E c decreases from 516 to 324 kV cm −1 as well as increased permittivity from 15.6 to 37.0. These may provide an alternative way for ferroelectric memory, sensors, and energy storage devices.