title: Space-charge-mediated anomalous ferroelectric switching in P(VDF-TrEE) polymer films.
abstract: We report on the switching dynamics of P(VDF-TrEE) copolymer devices and the realization of additional substable ferroelectric states via modulation of the coupling between polarizations and space charges. The space-charge-limited current is revealed to be the dominant leakage mechanism in such organic ferroelectric devices, and electrostatic interactions due to space charges lead to the emergence of anomalous ferroelectric loops. The reliable control of ferroelectric switching in P(VDF-TrEE) copolymers opens doors toward engineering advanced organic memories with tailored switching characteristics.
authors.affiliation: Physical Sciences and Engineering Division and ‡Advanced Nanofabrication Core Lab, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia.
authors.forename: Weijin
authors.initials: W
authors.lastname: Hu
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Wang
authors.forename: Yuanmin
authors.initials: Y
authors.lastname: Du
authors.forename: Xi-Xiang
authors.initials: XX
authors.lastname: Zhang
authors.forename: Tom
authors.initials: T
authors.lastname: Wu
keywords: PVDF; defect; ferroelectric switching; space charge