Fabrication and characterization of all-polymer, transparent ferroelectric capacitors on flexible substrates
KAUST DepartmentMaterials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
Functional Nanomaterials and Devices Research Group
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AbstractAll-polymer, transparent ferroelectric devices, based on the functional polymer poly(vinylidene fluoride trifluoroethylene) [P(VDF-TrFE)], have been fabricated on flexible substrates. The performance of the all-polymer devices was studied and compared to devices with metal electrodes. Specifically, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) [PEDOT:PSS] and platinum (Pt) electrode effects on the morphology, crystallinity and orientation of P(VDF-TrFE) films were investigated. The devices with PEDOT:PSS electrodes showed similar hysteresis and switching current response compared to Pt electrodes but with tremendously improved fatigue performance. Further, the devices with PEDOT:PSS electrodes showed lower coercive field and better fatigue performance than values reported for other polymer electrodes used with P(VDF-TrFE) on flexible substrates. © 2011 Elsevier B.V. All rights reserved.
SponsorsThe authors would like to thank Mr. Ahad Syed from the Advanced Nanofabrication Core Facility and Dr. Dongkyu Cha from the Imaging and Characterization Core facility at KAUST for their support. H.N.A. acknowledges the financial support from the KAUST baseline fund.