In Situ Imaging of Ferroelastic Domain Dynamics in CsPbBr₃ Perovskite Nanowires by Nanofocused Scanning X-ray Diffraction.

ABSTRACT: The interest in metal halide perovskites has grown as impressive results have been shown in solar cells, light emitting devices, and scintillators, but this class of materials have a complex crystal structure that is only partially understood. In particular, the dynamics of the nanoscale ferroelastic domains in metal halide perovskites remains difficult to study. An ideal in situ imaging method for ferroelastic domains requires a challenging combination of high spatial resolution and long penetration depth. Here, we demonstrate in situ temperature-dependent imaging of ferroelastic domains in a single nanowire of metal halide perovskite, CsPbBr₃. Scanning X-ray diffraction with a 60 nm beam was used to retrieve local structural properties for temperatures up to 140

SUBMITTER: Marcal LAB 

PROVIDER: S-EPMC7690043 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature