ArticleProceedings of the National Academy of Sciences of the United States of America2021
Decoding ultrafast polarization responses in lead halide perovskites by the two-dimensional optical Kerr effect.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed.
- Bridging Molecular and Bulk Nonlinearities: Kerr Effect Phenomena in Transparent Ceramic Systems.International journal of molecular sciences · 2026Review
- Enhanced Lattice Coherences and Improved Structural Stability in Quadruple A-Site Substituted Lead Bromide Perovskites.Small (Weinheim an der Bergstrasse, Germany) · 2025Article
- Article
- Discovery of enhanced lattice dynamics in a single-layered hybrid perovskite.Science advances · 2023Article
- Carriers, Quasi-particles, and Collective Excitations in Halide Perovskites.Chemical reviews · 2023Review
- Nonlinear terahertz control of the lead halide perovskite lattice.Science advances · 2023Article
- Phonon-driven intra-exciton Rabi oscillations in CsPbBrNature communications · 2023Article
- Highly mobile hot holes in CsScience advances · 2021Article
- Spin-orbit-coupled exciton-polariton condensates in lead halide perovskites.Science advances · 2021Article
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11 authors.
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Abstract
The ultrafast polarization response to incident light and ensuing exciton/carrier generation are essential to outstanding optoelectronic properties of lead halide perovskites (LHPs). A large number of mechanistic studies in the LHP field to date have focused on contributions to polarizability from organic cations and the highly polarizable inorganic lattice. For a comprehensive understanding of the ultrafast polarization response, we must additionally account for the nearly instantaneous hyperpolarizability response to the propagating light field itself. While light propagation is pivotal to optoelectronics and photonics, little is known about this in LHPs in the vicinity of the bandgap where stimulated emission, polariton condensation, superfluorescence, and photon recycling may take place. Here we develop two-dimensional optical Kerr effect (2D-OKE) spectroscopy to energetically dissect broadband light propagation and dispersive nonlinear polarization responses in LHPs. In contrast to earlier interpretations, the below-bandgap OKE responses in both hybrid CH
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