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An efficient route to fabricate fatigue-free P(VDF-TrFE) capacitors with enhanced piezoelectric and ferroelectric properties and excellent thermal stability for sensing and memory applications
- Source :
- Physical Chemistry Chemical Physics. 19:7743-7750
- Publication Year :
- 2017
- Publisher :
- Royal Society of Chemistry (RSC), 2017.
-
Abstract
- P(VDF-TrFE), the best known ferroelectric polymer, suffers from a rather low piezoelectric response as well as poor electrical fatigue life, hampering its application potential. Herein, we report the fabrication of fatigue free poly(vinylidenedifluoride-trifluoroethylene) P(VDF-TrFE)-based capacitors with record piezoelectric coefficients and excellent thermal stability. We proposed a cost-effective and simple solution-based process to fabricate P(VDF-TrFE)-based memory capacitors with large polarization (8.9 μC cm-2), low voltage operation (15 V), and excellent fatigue endurance with 100% polarization retention up to 108 electrical switching cycles. The thin film capacitors fabricated using methyl ethyl ketone (MEK) and dimethyl sulfoxide (DMSO) as co-solvents also show a much higher piezoelectric coefficient (d33 = -60 pm V-1) than the previously reported capacitors and are also thermally stable up to 380 K, making them ideal candidates for ferro-, piezo-, and pyro-electric applications, even in devices operating above room temperature. The observed results are well supported by first principles calculations, FTIR, XPS, and evaluation of cohesion energy for crystallization by DSC.
- Subjects :
- Fabrication
Piezoelectric coefficient
Materials science
business.industry
General Physics and Astronomy
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Ferroelectricity
Piezoelectricity
0104 chemical sciences
law.invention
Capacitor
law
Optoelectronics
Thermal stability
Physical and Theoretical Chemistry
Thin film
0210 nano-technology
business
Low voltage
Subjects
Details
- ISSN :
- 14639084 and 14639076
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Physical Chemistry Chemical Physics
- Accession number :
- edsair.doi.dedup.....c4960c1c83a257f8297f725429e51b44