Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/91060
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dc.contributorDepartment of Applied Physics-
dc.creatorBaldwin, A-
dc.creatorDelport, G-
dc.creatorLeng, K-
dc.creatorChahbazian, R-
dc.creatorGalkowski, K-
dc.creatorLoh, KP-
dc.creatorStranks, SD-
dc.date.accessioned2021-09-09T03:39:21Z-
dc.date.available2021-09-09T03:39:21Z-
dc.identifier.urihttp://hdl.handle.net/10397/91060-
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2021 The Authors. Published by American Chemical Societyen_US
dc.rightsThis is an open access article under a Creative Commons Attribution 4.0 International License (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/)en_US
dc.rightsThe following publication Baldwin, Alan, Delport, Géraud, Leng, Kai, Chahbazian, Rosemonde, Galkowski, Krzysztof, Loh, Kian Ping, Stranks, Samuel D., Local Energy Landscape Drives Long-Range Exciton Diffusion in Two-Dimensional Halide Perovskite Semiconductors, 2021/04/29, The Journal of Physical Chemistry Letters, 12(16), 4003-4011 is available at https://doi.org/10.1021/acs.jpclett.1c00823en_US
dc.subjectExcitonsen_US
dc.subjectPhononsen_US
dc.subjectDiffusionen_US
dc.subjectEnergyen_US
dc.subjectPerovskitesen_US
dc.titleLocal energy landscape drives long-range exciton diffusion in two-dimensional Halide Perovskite semiconductorsen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage4003-
dc.identifier.epage4011-
dc.identifier.volume12-
dc.identifier.issue16-
dc.identifier.doi10.1021/acs.jpclett.1c00823-
dcterms.abstractHalide perovskites are versatile semiconductors with applications including photovoltaics and light-emitting devices, having modular optoelectronic properties realizable through composition and dimensionality tuning. Layered Ruddlesden-Popper perovskites are particularly interesting due to their unique 2D character and charge carrier dynamics. However, long-range energy transport through exciton diffusion in these materials is not understood or realized. Here, local time-resolved luminescence mapping techniques are employed to visualize exciton transport in exfoliated flakes of the BA(2)MA(n-1)Pb(n)I(3n+1) perovskite family. Two distinct transport regimes are uncovered, depending on the temperature range. Above 100 K, diffusion is mediated by thermally activated hopping processes between localized states. At lower temperatures, a nonuniform energy landscape emerges in which transport is dominated by downhill energy transfer to lower-energy states, leading to long-range transport over hundreds of nanometers. Efficient, long-range, and switchable downhill transfer offers exciting possibilities for controlled directional long-range transport in these 2D materials for new applications.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of physical chemistry letters, 2021, v. 12, no. 16, p. 4003-4011-
dcterms.isPartOfJournal of physical chemistry letters-
dcterms.issued2021-
dc.identifier.isiWOS:000647271500019-
dc.identifier.pmid33877840-
dc.identifier.eissn1948-7185-
dc.description.validate202109 bchy-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_Scopus/WOSen_US
dc.description.pubStatusPublisheden_US
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