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Layer number dependent ferroelasticity in 2D Ruddlesden–Popper organic-inorganic hybrid perovskites

Author

Listed:
  • Xun Xiao

    (University of North Carolina)

  • Jian Zhou

    (Massachusetts Institute of Technology)

  • Kepeng Song

    (King Abdullah University of Science and Technology (KAUST))

  • Jingjing Zhao

    (University of North Carolina)

  • Yu Zhou

    (University of North Carolina)

  • Peter Neil Rudd

    (University of North Carolina)

  • Yu Han

    (King Abdullah University of Science and Technology (KAUST))

  • Ju Li

    (Massachusetts Institute of Technology)

  • Jinsong Huang

    (University of North Carolina)

Abstract

Ferroelasticity represents material domains possessing spontaneous strain that can be switched by external stress. Three-dimensional perovskites like methylammonium lead iodide are determined to be ferroelastic. Layered perovskites have been applied in optoelectronic devices with outstanding performance. However, the understanding of lattice strain and ferroelasticity in layered perovskites is still lacking. Here, using the in-situ observation of switching domains in layered perovskite single crystals under external strain, we discover the evidence of ferroelasticity in layered perovskites with layer number more than one, while the perovskites with single octahedra layer do not show ferroelasticity. Density functional theory calculation shows that ferroelasticity in layered perovskites originates from the distortion of inorganic octahedra resulting from the rotation of aspherical methylammonium cations. The absence of methylammonium cations in single layer perovskite accounts for the lack of ferroelasticity. These ferroelastic domains do not induce non-radiative recombination or reduce the photoluminescence quantum yield.

Suggested Citation

  • Xun Xiao & Jian Zhou & Kepeng Song & Jingjing Zhao & Yu Zhou & Peter Neil Rudd & Yu Han & Ju Li & Jinsong Huang, 2021. "Layer number dependent ferroelasticity in 2D Ruddlesden–Popper organic-inorganic hybrid perovskites," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21493-w
    DOI: 10.1038/s41467-021-21493-w
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    Cited by:

    1. Chuanzhao Li & Mykola Telychko & Yue Zheng & Shurong Yuan & Zhenyue Wu & Walter P. D. Wong & Yixin Li & Yuanyuan Jin & Weng Fu Io & Xinyun Wang & Junhao Lin & Jianhua Hao & Cheng Han & Kai Leng, 2024. "Switchable planar chirality and spin texture in highly ordered ferroelectric hybrid perovskite domains," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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