ArticleNature communications2020
Mahan excitons in room-temperature methylammonium lead bromide perovskites.
Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- An exciting Approach to Theoretical Spectroscopy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- Temperature-dependent trapping and polaron annihilation on ultrafast time scales in metal-halide perovskites.The journal of physical chemistry letters · 2025Article
- Dynamic control of electron correlations in photodoped charge-transfer insulators.Science advances · 2025Article
- Keldysh tuning of photoluminescence in a lead halide perovskite crystal.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Article
- Band Gap Renormalization at Different Symmetry Points in Perovskites.ACS photonics · 2024Article
- Excited-State Dynamics of MAPbBrThe journal of physical chemistry. C, Nanomaterials and interfaces · 2024Article
- Disentangling Thermal from Electronic Contributions in the Spectral Response of Photoexcited Perovskite Materials.Journal of the American Chemical Society · 2024Article
- Transient High-Harmonic Spectroscopy in an Inorganic-Organic Lead Halide Perovskite.The journal of physical chemistry letters · 2023Article
- Halide Perovskite Artificial Solids as a New Platform to Simulate Collective Phenomena in Doped Mott Insulators.Nano letters · 2023Article
- Hot-carrier tunable abnormal nonlinear absorption conversion in quasi-2D perovskite.Nature communications · 2022Article
- Exciton Manifolds in Highly Ambipolar Doped WSNanomaterials (Basel, Switzerland) · 2022Article
- Photo-induced enhancement of lattice fluctuations in metal-halide perovskites.Nature communications · 2022Article
- Nanoscale-Resolved Surface-to-Bulk Electron Transport in CsPbBrNano letters · 2022Article
- Spin-orbit-coupled exciton-polariton condensates in lead halide perovskites.Science advances · 2021Article
- Microscopic Picture of Electron-Phonon Interaction in Two-Dimensional Halide Perovskites.The journal of physical chemistry letters · 2020Article
- Solid-State NMR and NQR Spectroscopy of Lead-Halide Perovskite Materials.Journal of the American Chemical Society · 2020Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In a seminal paper, Mahan predicted that excitonic bound states can still exist in a semiconductor at electron-hole densities above the insulator-to-metal Mott transition. However, no clear evidence for this exotic quasiparticle, dubbed Mahan exciton, exists to date at room temperature. In this work, we combine ultrafast broadband optical spectroscopy and advanced many-body calculations to reveal that organic-inorganic lead-bromide perovskites host Mahan excitons at room temperature. Persistence of the Wannier exciton peak and the enhancement of the above-bandgap absorption are observed at all achievable photoexcitation densities, well above the Mott density. This is supported by the solution of the semiconductor Bloch equations, which confirms that no sharp transition between the insulating and conductive phase occurs. Our results demonstrate the robustness of the bound states in a regime where exciton dissociation is otherwise expected, and offer promising perspectives in fundamental physics and in room-temperature applications involving high densities of charge carriers.
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