Space-charge-mediated anomalous ferroelectric switching in P(VDF-TrEE) polymer films

Type
Article
Authors
Hu, Weijin cc
Wang, Zhihong
Du, Yuanmin
Zhang, Xixiang cc
Wu, Tao cc
KAUST Department
Physical Sciences and Engineering (PSE) Division
Advanced Nanofabrication and Thin Film Core Lab
Advanced Nanofabrication, Imaging and Characterization Core Lab
Materials Science and Engineering Program
KAUST Solar Center (KSC)
Core Labs
Laboratory of Nano Oxides for Sustainable Energy
Date
2014-11-12

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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.
Sponsors
This work is supported by KAUST.
Publisher
American Chemical Society (ACS)
Journal
ACS Applied Materials & Interfaces
ISSN
19448244
DOI
10.1021/am5050136
PubMed ID
25285508
Handle URI
http://hdl.handle.net/10754/563857
Collections
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; KAUST Solar Center (KSC)