Ultrafast dynamics of excitons in tetracene single crystals

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dc.contributor.authorBirech, Zephaniaen_ZA
dc.contributor.authorSchwoerer, Markusen_ZA
dc.contributor.authorSchmeiler, Teresaen_ZA
dc.contributor.authorPflaum, Jensen_ZA
dc.contributor.authorSchwoerer, Heinrichen_ZA
dc.date.accessioned2016-01-18T10:25:01Z
dc.date.available2016-01-18T10:25:01Z
dc.date.issued2014-03-18
dc.descriptionPlease cite as follows: Birech, Z., Schwoerer, M., Schmeiler, T., Pflaum, J. & Schwoerer, H. 2014. Ultrafast dynamics of excitons in tetracene single crystals. Journal of Chemical Physics, 140, 114501, doi:10.1063/1.4867696.en_ZA
dc.descriptionThe original publication is available at http://scitation.aip.org/content/aip/journal/jcpen_ZA
dc.description.abstractUltrafast exciton dynamics in free standing 200 nm thin tetracene single crystals were studied at room temperature by femtosecond transient absorption spectroscopy in the visible spectral range. The complex spectrally overlapping transient absorption traces of single crystals were systematically deconvoluted. From this, the ultrafast dynamics of the ground, excited, and transition states were identified including singlet exciton fission into two triplet excitons. Fission is generated through both, direct fission of higher singlet states S n on a sub-picosecond timescale, and thermally activated fission of the singlet exciton S 1 on a 40 ps timescale. The high energy Davydov component of the S 1 exciton is proposed to undergo fission on a sub-picoseconds timescale. At high density of triplet excitons their mutual annihilation (triplet-triplet annihilation) occurs on a <10 ps timescale.en_ZA
dc.description.urihttp://scitation.aip.org/content/aip/journal/jcp/140/11/10.1063/1.4867696en_ZA
dc.description.versionPublisher's versionen_ZA
dc.format.extent9 pagesen_ZA
dc.identifier.citationBirech, Z., Schwoerer, M., Schmeiler, T., Pflaum, J. & Schwoerer, H. 2014. Ultrafast dynamics of excitons in tetracene single crystals. Journal of Chemical Physics, 140, 114501, doi:10.1063/1.4867696.en_ZA
dc.identifier.issn1089-7690 (online)
dc.identifier.issn0021-9606 (print)
dc.identifier.otherdoi:10.1063/1.4867696
dc.identifier.urihttp://hdl.handle.net/10019.1/98181
dc.language.isoen_ZAen_ZA
dc.publisherAIP Publishing LLCen_ZA
dc.rights.holderAIP Publishing LLCen_ZA
dc.subjectTetracene single crystalsen_ZA
dc.subjectExciton theoryen_ZA
dc.subjectFemtosecond spectrometryen_ZA
dc.titleUltrafast dynamics of excitons in tetracene single crystalsen_ZA
dc.typeArticleen_ZA
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