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

Unnat Sampatraj Bhansali; Husam N. Alshareef

doi:10.1016/j.orgel.2012.04.026

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

Unnat Sampatraj Bhansali, Husam N. Alshareef

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1541-1545
Number of pages	5
Journal	Organic Electronics
Volume	13
Issue number	9
DOIs	https://doi.org/10.1016/j.orgel.2012.04.026
State	Published - Sep 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

ASJC Scopus subject areas

Materials Chemistry
Biomaterials
General Chemistry
Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering
Condensed Matter Physics

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10.1016/j.orgel.2012.04.026

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title = "Electrical performance of polymer ferroelectric capacitors fabricated on plastic substrate using transparent electrodes",

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. {\textcopyright} 2012 Elsevier B.V. All rights reserved.",

author = "Bhansali, {Unnat Sampatraj} and Alshareef, {Husam N.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

year = "2012",

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doi = "10.1016/j.orgel.2012.04.026",

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AU - Bhansali, Unnat Sampatraj

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PY - 2012/9

Y1 - 2012/9

N2 - 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.

AB - 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.

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

Abstract

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