In:
Applied Physics Letters, AIP Publishing, Vol. 90, No. 9 ( 2007-02-26)
Abstract:
Thin polypyrrole-poly(styrene sulfonate) acid film is employed as interface layers between both bottom and top metal electrodes of a ferroelectric polymer, poly(vinylidene fluoride-trifluoroethylene) copolymer capacitor. The sandwiched structure Titanium∕polypyrrole-poly(styrene sulfonate)∕poly(vinylidene fluoride-trifluoroethylene)∕polypyrrole-poly(styrene sulfonate)∕titanium shows prominent ferroelectric properties even as the thickness of P(VDF-TrFE) film is down to 500Å. The coercive voltage as low as 2.6V is obtained with a remanent polarization of 86mC∕m2 and a switching time of 30μs. The cell remains good ferroelectric properties at 60°C, which is the operating temperature for many electronics. Moreover, the sandwiched structure shows excellent data retention, after more than 1×107 of switching cycles, the remanent polarization remains as high as 69mC∕m2. The soft conductive polymer electrodes not only increase the crystallinity but also enhance the crystal dipole orientation comparing with the conventionally used metal electrodes.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2007
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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