Skip to main content

Room-temperature exciton coherence and dephasing in two-dimensional nanostructures

Author(s): Cassette, Elsa; Scholes, Gregory D.; Mahler, Benoît; Pensack, Ryan D.; Cassette, Elsa; et al

Download
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr12r7n
Full metadata record
DC FieldValueLanguage
dc.contributor.authorCassette, Elsa-
dc.contributor.authorScholes, Gregory D.-
dc.contributor.authorMahler, Benoît-
dc.contributor.authorPensack, Ryan D.-
dc.contributor.authorCassette, Elsa-
dc.contributor.authorCassette, Elsa-
dc.contributor.authorCassette, Elsa-
dc.date.accessioned2020-11-12T18:51:38Z-
dc.date.available2020-11-12T18:51:38Z-
dc.date.issued2015-12en_US
dc.identifier.citationCassette, Elsa, Pensack, Ryan D, Mahler, Benoît, Scholes, Gregory D. (2015). Room-temperature exciton coherence and dephasing in two-dimensional nanostructures. Nature Communications, 6 (1), 10.1038/ncomms7086.en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr12r7n-
dc.descriptionNature Communications. Volume 6, January 2015, Article number 6086.en_US
dc.description.abstractElectronic coherence has attracted considerable attention for its possible role in dynamical processes in molecular systems. However, its detection is challenged by inhomogeneous line broadening and interference with vibrational coherences. In particular, reports of 'persistent' coherent exciton superpositions at room temperature remain controversial, as the related transitions give typically shorter optical dephasing times of about 10-20 fs. To rationalize these reported long-lived coherences, several models have been proposed, involving strong correlation in the mechanisms of decoherence or that electronic coherences may be sustained by resonant vibrational modes. Here we report a decisive example of electronic coherence occurring in a chemical system in a 'warm and wet' (room-temperature solution) environment, colloidal semiconductor nanoplatelets, where details are not obscured by vibrational coherences nor ensemble dephasing. Comparing the exciton and optical coherence times evidences a partial correlation of fluctuations underlying dephasing and allows us to elucidate decoherence mechanisms occurring in these samples.en_US
dc.format.extent6:6086-1 - 6086-7en_US
dc.language.isoenen_US
dc.relation.ispartofNature Communicationsen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleRoom-temperature exciton coherence and dephasing in two-dimensional nanostructuresen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1038/ncomms7086-
dc.date.eissued2015-01-19en_US
dc.identifier.eissn2041-1723-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

Files in This Item:
File Description SizeFormat 
ncomms7086.pdf1.8 MBAdobe PDFView/Download


Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.