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The construction of a two-dimensional organic-inorganic hybrid double perovskite ferroelastic with a high T c and narrow band gap.
- Source :
-
Chemical science [Chem Sci] 2022 Mar 30; Vol. 13 (17), pp. 4794-4800. Date of Electronic Publication: 2022 Mar 30 (Print Publication: 2022). - Publication Year :
- 2022
-
Abstract
- Two-dimensional (2D) hybrid double perovskites have attracted extensive research interest for their fascinating physical properties, such as ferroelectricity, X-ray detection, light response and so on. In addition, ferroelastics, as an important branch of ferroic materials, exhibits wide prospects in mechanical switches, shape memory and templating electronic nanostructures. Here, we designed a 2D phase-transition double perovskite ferroelastic through a structurally progressive strategy. This evolution is core to our construction process from 0D to 1D and AgBi-based 2D. In this way, we successfully synthesized 2D lead-free ferroelastic (DPA) <subscript>4</subscript> AgBiBr <subscript>8</subscript> (DPA = 2,2-dimethylpropan-1-aminium) with a high Curie temperature ( T <subscript>c</subscript> ), which shows a narrower band gap than 0D (DPA) <subscript>4</subscript> Bi <subscript>2</subscript> Br <subscript>10</subscript> and 1D (DPA) <subscript>5</subscript> Pb <subscript>2</subscript> Br <subscript>9</subscript> . Moreover, the mechanism of structural phase transition and molecular motion are fully characterized by temperature dependent solid-state NMR and single crystal XRD. (DPA) <subscript>4</subscript> AgBiBr <subscript>8</subscript> injects power into the discovery of new ferroelastics or the construction and dimensional adjustment in new hybrid double perovskites.<br />Competing Interests: The authors declare no conflict of interest.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2041-6520
- Volume :
- 13
- Issue :
- 17
- Database :
- MEDLINE
- Journal :
- Chemical science
- Publication Type :
- Academic Journal
- Accession number :
- 35655872
- Full Text :
- https://doi.org/10.1039/d1sc07045b