Characterization of current transport in ferroelectric polymer devices

Handle URI:
http://hdl.handle.net/10754/563292
Title:
Characterization of current transport in ferroelectric polymer devices
Authors:
Hanna, Amir ( 0000-0003-4679-366X ) ; Bhansali, Unnat Sampatraj; Khan, Yasser; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
We report the charge injection characteristics in poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), as a function of electrode material in metal/ferroelectric/metal device structures. Symmetric and asymmetric devices with Al, Ag, Au and Pt electrodes were fabricated to determine the dominant carrier type, injection current density, and to propose transport mechanisms in the ferroelectric polymer. Higher work function metals such as Pt are found to inject less charges compared to lower work function metals, implying n-type conduction behavior for P(VDF-TrFE) with electrons as the dominant injected carrier. Two distinct charge transport regimes were identified in the P(VDF-TrFE) devices; a Schottky-limited conduction regime for low to intermediate fields (E < 20 MV/m), and a space-charge limited conduction (SCLC) regime for high fields (20 < E < 120 MV/m). Implication of these results for degradation in P(VDF-TrFE) memory performance are discussed. © 2013 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:
Jan-2014
DOI:
10.1016/j.orgel.2013.10.009
Type:
Article
ISSN:
15661199
Sponsors:
The authors would like to acknowledge M.N. Al-Madhoun for his help in device fabrication and valuable discussions. 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.authorHanna, Amiren
dc.contributor.authorBhansali, Unnat Sampatrajen
dc.contributor.authorKhan, Yasseren
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-03T11:45:02Zen
dc.date.available2015-08-03T11:45:02Zen
dc.date.issued2014-01en
dc.identifier.issn15661199en
dc.identifier.doi10.1016/j.orgel.2013.10.009en
dc.identifier.urihttp://hdl.handle.net/10754/563292en
dc.description.abstractWe report the charge injection characteristics in poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), as a function of electrode material in metal/ferroelectric/metal device structures. Symmetric and asymmetric devices with Al, Ag, Au and Pt electrodes were fabricated to determine the dominant carrier type, injection current density, and to propose transport mechanisms in the ferroelectric polymer. Higher work function metals such as Pt are found to inject less charges compared to lower work function metals, implying n-type conduction behavior for P(VDF-TrFE) with electrons as the dominant injected carrier. Two distinct charge transport regimes were identified in the P(VDF-TrFE) devices; a Schottky-limited conduction regime for low to intermediate fields (E < 20 MV/m), and a space-charge limited conduction (SCLC) regime for high fields (20 < E < 120 MV/m). Implication of these results for degradation in P(VDF-TrFE) memory performance are discussed. © 2013 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThe authors would like to acknowledge M.N. Al-Madhoun for his help in device fabrication and valuable discussions. 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.subjectCharge injectionen
dc.subjectCharge-transport mechanismsen
dc.subjectI-V analysisen
dc.subjectP(VDF-TrFE) capacitorsen
dc.titleCharacterization of current transport in ferroelectric polymer devicesen
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.authorHanna, Amiren
kaust.authorBhansali, Unnat Sampatrajen
kaust.authorAlshareef, Husam N.en
kaust.authorKhan, Yasseren
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