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Phonon-Bottleneck E...
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Thompson, J. J.P.Philipps-Universität Marburg,Philipps University Marburg,University Of Cambridge
(author)
Phonon-Bottleneck Enhanced Exciton Emission in 2D Perovskites
- Article/chapterEnglish2024
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2024
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LIBRIS-ID:oai:research.chalmers.se:b19f109d-1842-4892-94a6-5137358f535a
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https://doi.org/10.1002/aenm.202304343DOI
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https://research.chalmers.se/publication/540490URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
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Layered halide perovskites exhibit remarkable optoelectronic properties and technological promise, driven by strongly bound excitons. The interplay of spin-orbit and exchange coupling creates a rich excitonic landscape, determining their optical signatures and exciton dynamics. Despite the dark excitonic ground state, surprisingly efficient emission from higher-energy bright states has puzzled the scientific community, sparking debates on relaxation mechanisms. Combining low-temperature magneto-optical measurements with sophisticated many-particle theory, the origin of the bright exciton emission in perovskites is elucidated by tracking the thermalization of dark and bright excitons under a magnetic field. The unexpectedly high emission is clearly attributed to a pronounced phonon-bottleneck effect, considerably slowing down the relaxation toward the energetically lowest dark states. It is demonstrated that this bottleneck can be tuned by manipulating the bright-dark energy splitting and optical phonon energies, offering valuable insights and strategies for controlling exciton emission in layered perovskite materials that is crucial for optoelectronics applications.
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Dyksik, MateuszPolitechnika Wrocławska,Wrocław University of Science and Technology
(author)
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Peksa, PaulinaPolitechnika Wrocławska,Wrocław University of Science and Technology
(author)
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Posmyk, KatarzynaPolitechnika Wrocławska,Wrocław University of Science and Technology
(author)
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Joki, Ambjörn,1997Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)amborn
(author)
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Perea Causin, Raul,1995Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)causin
(author)
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Erhart, Paul,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)erhart
(author)
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Baranowski, MPolitechnika Wrocławska,Wrocław University of Science and Technology
(author)
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Loi, M. A.Rijksuniversiteit Groningen,University of Groningen
(author)
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Plochocka, PaulinaPolitechnika Wrocławska,Wrocław University of Science and Technology
(author)
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Malic, Ermin,1980Philipps-Universität Marburg,Philipps University Marburg(Swepub:cth)ermin
(author)
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Philipps-Universität MarburgUniversity Of Cambridge
(creator_code:org_t)
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In:Advanced Energy Materials14:201614-68401614-6832
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