Issue 61, 2024

An above-room-temperature ferroelectric two-dimensional halide double perovskite with direction dependent properties

Abstract

Herein, we introduce a new non-centrosymmetric 2D halide double perovskite Cl0.26Br3.74PA4AgSbBr8 (CPAS) with A-site linker, 3-chloropropylamine. CPAS exhibits above room-temperature ferroelectricity, with spontaneous polarization of 3.4 μC cm−2. The polarization is direction dependent, where ferroelectricity is observed perpendicular to octahedral sheets but mere capacitive phenomena between the sheets. The material shows defect- or phonon-mediated charge conduction. The optical properties reveal a bandgap of 2.48 eV with blue emission.

Graphical abstract: An above-room-temperature ferroelectric two-dimensional halide double perovskite with direction dependent properties

Supplementary files

Article information

Article type
Communication
Submitted
02 Apr 2024
Accepted
21 Jun 2024
First published
24 Jun 2024

Chem. Commun., 2024,60, 7898-7901

An above-room-temperature ferroelectric two-dimensional halide double perovskite with direction dependent properties

S. A. Rajput, S. Antharjanam and A. K. Chandiran, Chem. Commun., 2024, 60, 7898 DOI: 10.1039/D4CC01520G

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