Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites
Abstract Understanding the performance of perovskite solar cells is critical for advancing sustainable energy solutions. Hot-drop casted quasi-2D Ruddlesden-Popper perovskites (RPPs) exhibit remarkable efficiency and stability, making them promising for commercial applications. However, the ultrafas...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-025-01995-5 |
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| author | Xuanchao Zhang Junhua Zhou Fei Zheng Biao Yang Ajay Jha Hong-Guang Duan |
| author_facet | Xuanchao Zhang Junhua Zhou Fei Zheng Biao Yang Ajay Jha Hong-Guang Duan |
| author_sort | Xuanchao Zhang |
| collection | DOAJ |
| description | Abstract Understanding the performance of perovskite solar cells is critical for advancing sustainable energy solutions. Hot-drop casted quasi-2D Ruddlesden-Popper perovskites (RPPs) exhibit remarkable efficiency and stability, making them promising for commercial applications. However, the ultrafast energy transfer and exciton-phonon interactions in these materials remain unclear. Here, we show that using advanced techniques like two-dimensional electronic spectroscopy (2DES) and transient grating (TG), we can unravel energy dynamics in hot-drop casted RPP films. Our study reveals rapid energy transfer between perovskite layers occurring within 100–220 femtoseconds and highlights how exciton-phonon coupling drives structural changes in the material. Coherent vibrational signals identify key lattice and organic cation modes, providing insights into their role in energy dissipation. These findings deepen our understanding of how 2D perovskites work and pave the way for improving the efficiency and stability of next-generation optoelectronic devices. |
| format | Article |
| id | doaj-art-347aaa5562754e2488f99bb7e6506659 |
| institution | OA Journals |
| issn | 2399-3650 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj-art-347aaa5562754e2488f99bb7e65066592025-08-20T02:15:06ZengNature PortfolioCommunications Physics2399-36502025-02-018111010.1038/s42005-025-01995-5Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskitesXuanchao Zhang0Junhua Zhou1Fei Zheng2Biao Yang3Ajay Jha4Hong-Guang Duan5Department of Physics, School of Physical Science and Technology, Ningbo UniversityDepartment of Physics, School of Physical Science and Technology, Ningbo UniversityDepartment of Physics, School of Physical Science and Technology, Ningbo UniversityDepartment of Physics, School of Physical Science and Technology, Ningbo UniversityRosalind Franklin Institute, HarwellDepartment of Physics, School of Physical Science and Technology, Ningbo UniversityAbstract Understanding the performance of perovskite solar cells is critical for advancing sustainable energy solutions. Hot-drop casted quasi-2D Ruddlesden-Popper perovskites (RPPs) exhibit remarkable efficiency and stability, making them promising for commercial applications. However, the ultrafast energy transfer and exciton-phonon interactions in these materials remain unclear. Here, we show that using advanced techniques like two-dimensional electronic spectroscopy (2DES) and transient grating (TG), we can unravel energy dynamics in hot-drop casted RPP films. Our study reveals rapid energy transfer between perovskite layers occurring within 100–220 femtoseconds and highlights how exciton-phonon coupling drives structural changes in the material. Coherent vibrational signals identify key lattice and organic cation modes, providing insights into their role in energy dissipation. These findings deepen our understanding of how 2D perovskites work and pave the way for improving the efficiency and stability of next-generation optoelectronic devices.https://doi.org/10.1038/s42005-025-01995-5 |
| spellingShingle | Xuanchao Zhang Junhua Zhou Fei Zheng Biao Yang Ajay Jha Hong-Guang Duan Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites Communications Physics |
| title | Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites |
| title_full | Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites |
| title_fullStr | Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites |
| title_full_unstemmed | Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites |
| title_short | Ultrafast exciton-phonon coupling and energy transfer dynamics in quasi-2D layered Ruddlesden-Popper perovskites |
| title_sort | ultrafast exciton phonon coupling and energy transfer dynamics in quasi 2d layered ruddlesden popper perovskites |
| url | https://doi.org/10.1038/s42005-025-01995-5 |
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