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High-Temperature Antiferroelectric of Lead Iodide Hybrid Perovskites
- Source :
- Journal of the American Chemical Society; August 2019, Vol. 141 Issue: 32 p12470-12474, 5p
- Publication Year :
- 2019
-
Abstract
- Antiferroelectrics, characterized by the natural polarization-electric field (P–E) double hysteresis loops, has been developed as a promising branch for energy storage. Here, we present the first antiferroelectric in the booming family of lead iodide hybrid perovskites, (BA)2(EA)2Pb3I10(1, where BA = n-butylammonium and EA = ethylammonium), which exhibits one of the highest Curie temperatures (∼363 K) for the majority of known molecular systems. Strikingly, its high-temperature antiferroelectricity, triggered by an antipolar alignment of adjacent dipoles, is confirmed by the characteristic double P–Ehysteresis loops, thus enabling remarkable energy storage efficiencies in the range of 65%–83%. This merit is almost comparable to those of many inorganic counterparts, suggesting the great potential of 1for energy storage. Another fascinating attribute is that 1also acts as a room-temperature biaxial ferroelectric with spontaneous polarization of 5.6 μC·cm–2. As far as we know, this study on the high-temperature antiferroelectric, along with room-temperature biaxial ferroelectricity, is unprecedented for the versatile lead iodide hybrid perovskites, which sheds light on the design of new electric-ordered materials and facilitates their application of high-performance devices.
Details
- Language :
- English
- ISSN :
- 00027863 and 15205126
- Volume :
- 141
- Issue :
- 32
- Database :
- Supplemental Index
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Periodical
- Accession number :
- ejs50699326
- Full Text :
- https://doi.org/10.1021/jacs.9b05124