dc.contributor.author | Wang, Mao | |
dc.contributor.author | Gong, Yi | |
dc.contributor.author | Alzina, Francesc | |
dc.contributor.author | Sotomayor Torres, Clivia M. | |
dc.contributor.author | Li, Hongxiang | |
dc.contributor.author | Zhang, Zhiliang | |
dc.contributor.author | He, Jianying | |
dc.date.accessioned | 2019-05-06T12:23:51Z | |
dc.date.available | 2019-05-06T12:23:51Z | |
dc.date.created | 2017-05-29T14:05:31Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Journal of Physical Chemistry C. 2017, 121 (22), 12441-12446. | nb_NO |
dc.identifier.issn | 1932-7447 | |
dc.identifier.uri | http://hdl.handle.net/11250/2596618 | |
dc.description.abstract | We 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.iso | eng | nb_NO |
dc.publisher | American Chemical Society | nb_NO |
dc.title | Angle-Dependent Photoluminescence Spectroscopy of Solution-Processed Organic Semiconducting Nanobelts | nb_NO |
dc.title.alternative | Angle-Dependent Photoluminescence Spectroscopy of Solution-Processed Organic Semiconducting Nanobelts | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 12441-12446 | nb_NO |
dc.source.volume | 121 | nb_NO |
dc.source.journal | Journal of Physical Chemistry C | nb_NO |
dc.source.issue | 22 | nb_NO |
dc.identifier.doi | 10.1021/acs.jpcc.7b02958 | |
dc.identifier.cristin | 1472530 | |
dc.relation.project | Norges forskningsråd: 234626 | nb_NO |
dc.relation.project | Norges forskningsråd: 245963 | nb_NO |
dc.description.localcode | This article will not be available due to copyright restrictions (c) 2017 by American Chemical Society | nb_NO |
cristin.unitcode | 194,64,45,0 | |
cristin.unitname | Institutt for konstruksjonsteknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |