Title
Microstructured organic ferroelectric thin film capacitors by solution micromolding
Author
Lenz, T.
Zhao, D.
Richardson, G.
Katsouras, I.
Asadi, K.
Glasser, G.
Zimmermann, S.T.
Stingelin, N.
Roelofs, W.S.C.
Kemerink, M.
Blom, P.W.M.
de Leeuw, D.M.
Publication year
2015
Abstract
Ferroelectric nanostructures offer a promising route for novel integrated electronic devices such as non-volatile memories. Here we present a facile fabrication route for ferroelectric capacitors comprising a linear array of the ferroelectric random copolymer of vinylidenefluoride and trifluoroethylene (P(VDFTrFE)) interdigitated with the electrically insulating polymer polyvinyl alcohol (PVA). Micrometer size line gratings of both polymers were fabricated over large area by solution micromolding, a soft lithography method. The binary linear arrays were realized by backfilling with the second polymer. We investigated in detail the device physics of the patterned capacitors. The electrical equivalent circuit is a linear capacitor of PVA in parallel with a ferroelectric capacitor of P(VDFTrFE). The binary arrays are electrically characterized by both conventional Sawyer–Tower and shunt measurements. The dependence of the remanent polarization on the array topography is explained by numerical simulation of the electric field distribution.
Subject
Nano Technology
HOL - Holst
TS - Technical Sciences
Chemistry
Ferroelectric materials
P(VDF-TrFE)
Sawyer–Tower
Shunt measurements
Solution micromolding
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http://resolver.tudelft.nl/uuid:00c11c18-4f66-4f80-907e-d617a702e7c8
DOI
https://doi.org/10.1002/pssa.201532267
TNO identifier
533732
Source
Physica Status Solidi A, 212 (10), 2124-2132
Document type
article