Optical Anisotropy and Momentum-Dependent Excitons in Dibenzopentacene Single Crystals
dc.bibliographicCitation.firstPage | 21183 | |
dc.bibliographicCitation.issue | 24 | |
dc.bibliographicCitation.journalTitle | ACS omega | eng |
dc.bibliographicCitation.lastPage | 21191 | |
dc.bibliographicCitation.volume | 7 | |
dc.contributor.author | Graf, Lukas | |
dc.contributor.author | Liu, Fupin | |
dc.contributor.author | Naumann, Marco | |
dc.contributor.author | Roth, Friedrich | |
dc.contributor.author | Debnath, Bipasha | |
dc.contributor.author | Büchner, Bernd | |
dc.contributor.author | Krupskaya, Yulia | |
dc.contributor.author | Popov, Alexey A. | |
dc.contributor.author | Knupfer, Martin | |
dc.date.accessioned | 2022-07-28T09:30:14Z | |
dc.date.available | 2022-07-28T09:30:14Z | |
dc.date.issued | 2022 | |
dc.description.abstract | High-quality single crystals of the organic semiconductor (1,2;8,9)-dibenzopentacene were grown via physical vapor transport. The crystal structure─unknown before─was determined by single-crystal X-ray diffraction; polarization-dependent optical absorption measurements display a large anisotropy in the ac plane of the crystals. The overall Davydov splitting is ∼110 meV, which is slightly lower than that in the close relative pentacene (120 meV). Momentum-dependent electron energy-loss spectroscopy measurements show a clear exciton dispersion of the Davydov components. An analysis of the dispersion using a simple 1D model indicates smaller electron- and hole-transfer integrals in dibenzopentacene as compared to pentacene. The spectral weight distribution of the excitation spectra is strongly momentum-dependent and demonstrates a strong momentum-dependent admixture of Frenkel excitons, charge-transfer excitons, and vibrational modes. | eng |
dc.description.fonds | Leibniz_Fonds | |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/9799 | |
dc.identifier.uri | http://dx.doi.org/10.34657/8837 | |
dc.language.iso | eng | eng |
dc.publisher | Washington, DC : ACS Publications | |
dc.relation.doi | https://doi.org/10.1021/acsomega.2c01987 | |
dc.relation.essn | 2470-1343 | |
dc.rights.license | CC BY-NC-ND 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject.ddc | 540 | |
dc.subject.ddc | 660 | |
dc.subject.other | electroabsorption spectra | eng |
dc.subject.other | electronic-properties | eng |
dc.subject.other | tetracene | eng |
dc.subject.other | anthracene | eng |
dc.subject.other | pentacene | eng |
dc.subject.other | 1,2:8,9-dibenzopentacene | eng |
dc.subject.other | mobility | eng |
dc.subject.other | photophysics | eng |
dc.subject.other | absorption | eng |
dc.subject.other | transport | eng |
dc.title | Optical Anisotropy and Momentum-Dependent Excitons in Dibenzopentacene Single Crystals | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IFWD | ger |
wgl.subject | Chemie | ger |
wgl.type | Zeitschriftenartikel | ger |
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