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dc.contributor.authorMontilla, Francisco
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorSamuel, Ifor David William
dc.date.accessioned2014-03-26T17:01:01Z
dc.date.available2014-03-26T17:01:01Z
dc.date.issued2013-10-14
dc.identifier.citationMontilla , F , Ruseckas , A & Samuel , I D W 2013 , ' Absorption cross-sections of hole polarons in glassy and beta-phase polyfluorene ' , Chemical Physics Letters , vol. 585 , pp. 133-137 . https://doi.org/10.1016/j.cplett.2013.08.098en
dc.identifier.issn0009-2614
dc.identifier.otherPURE: 84360373
dc.identifier.otherPURE UUID: bcc4f14f-5fe3-4116-b9c7-0f67c31e49d3
dc.identifier.otherWOS: 000325169000025
dc.identifier.otherScopus: 84885577181
dc.identifier.otherORCID: /0000-0001-9114-3522/work/32543069
dc.identifier.urihttp://hdl.handle.net/10023/4540
dc.descriptionF. Montilla acknowledges financial support provided by Ministerio de Economía y Competitividad (Ramón y Cajal RYC1463/06 and José Castillejo JC2009-00 227 Programs). The authors also acknowledge the Engineering and Physical Sciences Research Council for financial support.en
dc.description.abstractAbsorption induced by electrochemically injected holes is studied in poly-9,9-dioctylfluorene (PFO) films. Injected charges form positive polarons which are delocalised over four fluorene units in the glassy phase and about seven fluorene units in its beta-phase. Polaron absorption cross-sections at the 640 nm peak are similar to the published values of chemically reduced oligofluorenes in solution. The absorption cross-section of polaron in the beta-phase at 470 nm is about eight times smaller than the stimulated emission cross-section derived from published data. This indicates that beta-phase-rich PFO is an attractive candidate for a lightemitting layer in double-heterostructure organic laser diodes.
dc.format.extent5
dc.language.isoeng
dc.relation.ispartofChemical Physics Lettersen
dc.rights© 2013, the Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectConjugated polymeren
dc.subjectFilmsen
dc.subjectFluorescenceen
dc.subjectPhotophysicsen
dc.subjectMorphologyen
dc.subjectQD Chemistryen
dc.subject.lccQDen
dc.titleAbsorption cross-sections of hole polarons in glassy and beta-phase polyfluoreneen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1016/j.cplett.2013.08.098
dc.description.statusPeer revieweden


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