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Two-Dimensional Layered Perovskite Ferroelectric with Giant Piezoelectric Voltage Coefficient
- Source :
- Journal of the American Chemical Society. 142:1077-1082
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Piezoelectric sensors that can work under various conditions with superior performance are highly desirable with the arrival of the Internet of Things. For practical applications, a large piezoelectric voltage coefficient g and a high Curie temperature Tc are critical to the performance of piezoelectric sensors. Here, we report a two-dimensional perovskite ferroelectric (4-aminotetrahydropyran)2PbBr4 [(ATHP)2PbBr4] with a saturated polarization of 5.6 μC cm-2, high Tc of 503 K [above that of BaTiO3 (BTO, 393 K)], and extremely large g33 of 660.3 × 10-3 V m N-1 [much beyond that of Pb(Zr,Ti)O3 (PZT) ceramics (20 to 40 × 10-3 V m N-1), more than 2 times higher than that of poly(vinylidene fluoride) (PVDF, about 286.7 × 10-3 V m N-1)]. Combined with the advantages of molecular ferroelectrics, such as light weight, easy and environmentally friendly processing, and mechanical flexibility, (ATHP)2PbBr4 would be a competitive candidate for next-generation smart piezoelectric sensors in flexible devices, soft robotics, and biomedical devices.
- Subjects :
- business.industry
Piezoelectric sensor
Chemistry
Soft robotics
General Chemistry
010402 general chemistry
01 natural sciences
Biochemistry
Ferroelectricity
Catalysis
Piezoelectric voltage
0104 chemical sciences
Colloid and Surface Chemistry
visual_art
visual_art.visual_art_medium
Optoelectronics
Curie temperature
Ceramic
business
Polarization (electrochemistry)
Perovskite (structure)
Subjects
Details
- ISSN :
- 15205126 and 00027863
- Volume :
- 142
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi.dedup.....7da38855b8e2e00c9e7f224d0635b239