Electrical performance of polymer ferroelectric capacitors fabricated on plastic substrate using transparent electrodes

Handle URI:
http://hdl.handle.net/10754/562286
Title:
Electrical performance of polymer ferroelectric capacitors fabricated on plastic substrate using transparent electrodes
Authors:
Bhansali, Unnat Sampatraj; Khan, Mohammad A.; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
Polymer-based flexible ferroelectric capacitors have been fabricated using a transparent conducting oxide (ITO) and a transparent conducting polymer (PEDOT:PSS). It is found that the polarization fatigue performance with transparent oxide electrodes exhibits a significant improvement over the polymer electrodes (20% vs 70% drop in polarization after 10 6 cycles). This result can be explained based on a charge injection model that is controlled by interfacial band-offsets, and subsequent pinning of ferroelectric domain walls by the injected carriers. Furthermore, the coercive field (E c) of devices with our polymer electrodes is nearly 40% lower than reported values with similar polymer electrodes. Surprisingly, this difference was found to be related to the dry etching process used to define the top electrodes, which is reported for the first time by this group. The temperature dependence of relative permittivity of both devices shows a typical first order ferroelectric-to-paraelectric phase transition, but with a reduced Curie temperature compared to reference devices fabricated on Pt. © 2012 Elsevier B.V. All rights reserved.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials and Devices Research Group
Publisher:
Elsevier BV
Journal:
Organic Electronics
Issue Date:
Sep-2012
DOI:
10.1016/j.orgel.2012.04.026
Type:
Article
ISSN:
15661199
Sponsors:
The authors would like to thank Mr. Ahad Syed (Nano-Fab, KAUST) for his help with optimizing the oxygen plasma dry etch recipe, Dr. Dongkyu Cha and M. Almadhoun for characterization and analysis. The authors also acknowledge the generous financial support from the KAUST baseline fund and Saudi Basic Industries (SABIC) Grant No. 2000000015.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorBhansali, Unnat Sampatrajen
dc.contributor.authorKhan, Mohammad A.en
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-03T09:59:27Zen
dc.date.available2015-08-03T09:59:27Zen
dc.date.issued2012-09en
dc.identifier.issn15661199en
dc.identifier.doi10.1016/j.orgel.2012.04.026en
dc.identifier.urihttp://hdl.handle.net/10754/562286en
dc.description.abstractPolymer-based flexible ferroelectric capacitors have been fabricated using a transparent conducting oxide (ITO) and a transparent conducting polymer (PEDOT:PSS). It is found that the polarization fatigue performance with transparent oxide electrodes exhibits a significant improvement over the polymer electrodes (20% vs 70% drop in polarization after 10 6 cycles). This result can be explained based on a charge injection model that is controlled by interfacial band-offsets, and subsequent pinning of ferroelectric domain walls by the injected carriers. Furthermore, the coercive field (E c) of devices with our polymer electrodes is nearly 40% lower than reported values with similar polymer electrodes. Surprisingly, this difference was found to be related to the dry etching process used to define the top electrodes, which is reported for the first time by this group. The temperature dependence of relative permittivity of both devices shows a typical first order ferroelectric-to-paraelectric phase transition, but with a reduced Curie temperature compared to reference devices fabricated on Pt. © 2012 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThe authors would like to thank Mr. Ahad Syed (Nano-Fab, KAUST) for his help with optimizing the oxygen plasma dry etch recipe, Dr. Dongkyu Cha and M. Almadhoun for characterization and analysis. The authors also acknowledge the generous financial support from the KAUST baseline fund and Saudi Basic Industries (SABIC) Grant No. 2000000015.en
dc.publisherElsevier BVen
dc.subjectCurie transitionen
dc.subjectFatigueen
dc.subjectFlexible substratesen
dc.subjectP(VDF-TrFE) 70/30en
dc.subjectPEDOT:PSS patterningen
dc.subjectTransparent electrodesen
dc.titleElectrical performance of polymer ferroelectric capacitors fabricated on plastic substrate using transparent electrodesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalOrganic Electronicsen
kaust.authorBhansali, Unnat Sampatrajen
kaust.authorAlshareef, Husam N.en
kaust.authorKhan, Mohammad A.en
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