Metal-free ferroelectric halide perovskite exhibits visible photoluminescence correlated with local ferroelectricity.

ABSTRACT: Perovskite materials with tunable electronic and structural characteristics can realize various physical properties including electrical/ionic conduction, ferroelectricity, and luminescence. Integrating and coupling these properties in a single perovskite material offer new possibilities for fundamental research and applications. In particular, coupling ferroelectricity and luminescence would enable novel applications. Here, we report that the metal-free ferroelectric perovskite MDABCO (N-methyl-N'-diazabicyclo[2.2.2]octonium)-ammonium triiodide exhibits coupled superior ferroelectricity and visible photoluminescence (PL). Besides strong second-harmonic generation (SHG) associated with its ferroelectricity, MDABCO-ammonium triiodide shows long-lifetime PL at room temperature.

SUBMITTER: Handa T 

PROVIDER: S-EPMC9217093 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature