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Tuning the Ferroelectric Properties of Trialkylbenzene-1,3,5-tricarboxamide (BTA)
Linköping University, Department of Physics, Chemistry and Biology, Complex Materials and Devices. Linköping University, Faculty of Science & Engineering.
Eindhoven University of Technology, Netherlands.
Linköping University, Department of Physics, Chemistry and Biology, Complex Materials and Devices. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-4728-8446
Eindhoven University of Technology, Netherlands.
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2017 (English)In: ADVANCED ELECTRONIC MATERIALS, ISSN 2199-160X, Vol. 3, no 7, article id 1600530Article in journal (Refereed) Published
Abstract [en]

This study demonstrates how simple structural modification of a prototypical organic ferroelectric molecule can be used to tune its key ferroelectric properties. In particular, it is found that shortening the alkyl chain length of trialkylbenzene-1,3,5-tricarboxamide (BTA) from C18H37 to C6H13 causes an increase in depolarization activation energy (approximate to 1.1-1.55 eV), coercive field (approximate to 25-40 V mu m(-1)), and remnant polarization (approximate to 20-70 mC m(-2)). As the polarization enhancement far exceeds the geometrically expected factor, these observations are attributed to an increase in the intercolumnar interaction. The combination of the mentioned characteristics results in a record polarization retention time of close to three months at room temperature for capacitor devices of the material having the shortest alkyl chain. The long retention and the remnant polarization that is as high as that of P(VDF:TrFE) distinguish the BTA-C6 material from other small molecular organic ferroelectrics and make it a perspective choice for applications that require cheap, flexible, and lightweight ferroelectrics.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 3, no 7, article id 1600530
Keywords [en]
alkyl chains; benzene-1, 3, 5-tricarboxamide; ferroelectric memories; organic ferroelectrics; polarization retention
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-139615DOI: 10.1002/aelm.201600530ISI: 000405205300005OAI: oai:DiVA.org:liu-139615DiVA, id: diva2:1133744
Note

Funding Agencies|NWO Nano program; Vetenskapsradet; Swedish Government Strategic Research Area in Materials Science on Functional Materials at the Linkping University (Faculty Grant SFO Mat LiU) [2009 00971]

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2018-03-08

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Cornelissen, Tim

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