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dc.contributor.authorWang, Mao
dc.contributor.authorGong, Yi
dc.contributor.authorAlzina, Francesc
dc.contributor.authorSotomayor Torres, Clivia M.
dc.contributor.authorLi, Hongxiang
dc.contributor.authorZhang, Zhiliang
dc.contributor.authorHe, Jianying
dc.date.accessioned2019-05-06T12:23:51Z
dc.date.available2019-05-06T12:23:51Z
dc.date.created2017-05-29T14:05:31Z
dc.date.issued2017
dc.identifier.citationJournal of Physical Chemistry C. 2017, 121 (22), 12441-12446.nb_NO
dc.identifier.issn1932-7447
dc.identifier.urihttp://hdl.handle.net/11250/2596618
dc.description.abstractWe report an anomalous anisotropy in photoluminescence (PL) from crystalline nanobelt of an organic small-molecule semiconductor, 6,13-dichloropentacene (DCP). Large-area well-aligned DCP nanobelt arrays are readily formed by self-assembly through solution method utilizing the strong anisotropic interactions between molecules. The absorption spectrum of the arrays suggests the formation of both intramolecular exciton and intermolecular exciton. However, the results of angle-dependent PL spectroscopy indicate that the PL arises only from the relaxation of intramolecular exciton, which has an optical transition dipole moment with an angle of 115° with the long-axis of the nanobelts. The angular dependence of PL signals follows a quartic rule (IPL(θ) ∝ cos4(θ – 115)) and agrees well with the optical selection rule of individual DCP molecules. The measured polarization ratio ρ from the individual nanobelts is on average 0.91 ± 0.02, superior to that of prior-art organic semiconductors. These results provide new insights into exciton behavior in 1D π–π stacking organic semiconductors and demonstrate DCP’s great potential in the photodetectors and optical switches for large-scale organic optoelectronics.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.titleAngle-Dependent Photoluminescence Spectroscopy of Solution-Processed Organic Semiconducting Nanobeltsnb_NO
dc.title.alternativeAngle-Dependent Photoluminescence Spectroscopy of Solution-Processed Organic Semiconducting Nanobeltsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber12441-12446nb_NO
dc.source.volume121nb_NO
dc.source.journalJournal of Physical Chemistry Cnb_NO
dc.source.issue22nb_NO
dc.identifier.doi10.1021/acs.jpcc.7b02958
dc.identifier.cristin1472530
dc.relation.projectNorges forskningsråd: 234626nb_NO
dc.relation.projectNorges forskningsråd: 245963nb_NO
dc.description.localcodeThis article will not be available due to copyright restrictions (c) 2017 by American Chemical Societynb_NO
cristin.unitcode194,64,45,0
cristin.unitnameInstitutt for konstruksjonsteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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