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Three-dimensional coherent x-ray diffraction imaging of ferroelastic domains in single CsPbBr3 perovskite nanoparticles

Dzhigaev, D LU orcid ; Zhang, Z LU ; Marçal, L A B LU ; Sala, S LU ; Björling, A LU ; Mikkelsen, A LU and Wallentin, J LU (2021) In New Journal of Physics 23(6).
Abstract

Metal halide perovskites attract significant interest due to their remarkable performance in optoelectronic devices. However, the gap in understanding the relationship between their nanoscale structure and properties limits their application towards novel devices. In this work, twinned ferroelastic domains in single 500 nm CsPbBr3 particles are studied with 3D Bragg coherent x-ray diffraction imaging. A preferential double-domain structure is revealed in four identical particles, with one domain oriented along the [110] and the other along the [002] direction. The particles exhibit similar scattering volume ratios of 0.12 0.026 between twin phases, suggesting the possibility of a deterministic formation process. The domains exhibit a... (More)

Metal halide perovskites attract significant interest due to their remarkable performance in optoelectronic devices. However, the gap in understanding the relationship between their nanoscale structure and properties limits their application towards novel devices. In this work, twinned ferroelastic domains in single 500 nm CsPbBr3 particles are studied with 3D Bragg coherent x-ray diffraction imaging. A preferential double-domain structure is revealed in four identical particles, with one domain oriented along the [110] and the other along the [002] direction. The particles exhibit similar scattering volume ratios of 0.12 0.026 between twin phases, suggesting the possibility of a deterministic formation process. The domains exhibit a difference in lattice tilt of 0.59 degrees, in excellent agreement with calculations of the lattice mismatch at the (112) twin boundary. These results provide important insights both for the fundamental understanding of ferroelastic nanoscale materials and for the performance improvement of perovskite-based devices. Moreover, this work paves the way towards real-time imaging of the domain dynamics in ferroic systems.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
BCDI, coherent x-ray imaging, domains, ferroelastic, perovskites, synchrotron, twinning
in
New Journal of Physics
volume
23
issue
6
article number
063035
pages
11 pages
publisher
IOP Publishing
external identifiers
  • scopus:85108857366
ISSN
1367-2630
DOI
10.1088/1367-2630/ac02e0
language
English
LU publication?
yes
id
2d66ba32-4517-4849-9de9-090e4de6fb67
date added to LUP
2021-07-08 10:20:53
date last changed
2023-11-08 16:13:29
@article{2d66ba32-4517-4849-9de9-090e4de6fb67,
  abstract     = {{<p>Metal halide perovskites attract significant interest due to their remarkable performance in optoelectronic devices. However, the gap in understanding the relationship between their nanoscale structure and properties limits their application towards novel devices. In this work, twinned ferroelastic domains in single 500 nm CsPbBr3 particles are studied with 3D Bragg coherent x-ray diffraction imaging. A preferential double-domain structure is revealed in four identical particles, with one domain oriented along the [110] and the other along the [002] direction. The particles exhibit similar scattering volume ratios of 0.12 0.026 between twin phases, suggesting the possibility of a deterministic formation process. The domains exhibit a difference in lattice tilt of 0.59 degrees, in excellent agreement with calculations of the lattice mismatch at the (112) twin boundary. These results provide important insights both for the fundamental understanding of ferroelastic nanoscale materials and for the performance improvement of perovskite-based devices. Moreover, this work paves the way towards real-time imaging of the domain dynamics in ferroic systems.</p>}},
  author       = {{Dzhigaev, D and Zhang, Z and Marçal, L A B and Sala, S and Björling, A and Mikkelsen, A and Wallentin, J}},
  issn         = {{1367-2630}},
  keywords     = {{BCDI; coherent x-ray imaging; domains; ferroelastic; perovskites; synchrotron; twinning}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{IOP Publishing}},
  series       = {{New Journal of Physics}},
  title        = {{Three-dimensional coherent x-ray diffraction imaging of ferroelastic domains in single CsPbBr<sub>3</sub> perovskite nanoparticles}},
  url          = {{http://dx.doi.org/10.1088/1367-2630/ac02e0}},
  doi          = {{10.1088/1367-2630/ac02e0}},
  volume       = {{23}},
  year         = {{2021}},
}