ArticleScience advances2022
Strain propagation in layered two-dimensional halide perovskites.
Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- π‑Conjugated Indole-Based 2D Perovskite Microcavities for Self-Powered Ultraviolet Photodetection.Chemistry of materials : a publication of the American Chemical Society · 2026Article
- Charge-Acoustic Phonon Coupling Determined Carrier Transport Properties in FAAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Structure-Emission Property Relationship of Bilayer 2D Hybrid Perovskites.Journal of the American Chemical Society · 2025Article
- Giant deformation potential induced small polaron effect in Dion-Jacobson two-dimensional lead halide perovskites.National science review · 2025Article
- Application of Strain Engineering in Solar Cells.Molecules (Basel, Switzerland) · 2024Review
- Organic and inorganic sublattice coupling in two-dimensional lead halide perovskites.Nature communications · 2024Article
- Carriers, Quasi-particles, and Collective Excitations in Halide Perovskites.Chemical reviews · 2023Review
- Metal transducer-assisted acoustic deformation potential characterization via coherent acoustic phonon dynamics.Photoacoustics · 2023Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Impulsive light excitation presents a powerful tool for investigating the interdependent structural and electronic responses in layered two-dimensional (2D) halide perovskites. However, detailed understanding of the nonlinear lattice dynamics in these soft hybrid materials remains limited. Here, we explicate the intrinsic strain propagation mechanisms in 2D perovskite single crystals using transient reflection spectroscopy. Ultrafast photoexcitation leads to the generation of strain pulses via thermoelastic (TE) stress and deformation potential (DP) interaction whence their detection proceed via Brillouin scattering. Using a two-temperature model together with strain wave propagation, we discern the TE and DP contributions in strain generation. Hot carrier cooling plays a dominant role in effecting the weak modulation amplitude. Out-of-plane lattice stiffness is reduced by the weak van der Waals bond between organic layers, resulting in a slow strain propagation velocity. Our findings inject fresh insights into the basic strain properties of layered perovskites critical for manipulating their functional properties for new applications.
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