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Molecular weight dependence of exciton diffusion in poly(3-hexylthiophene)

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dc.contributor.authorHaji Masri, Mohammad Khairul Zarifi
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorEmelianova, Evguenia V.
dc.contributor.authorWang, Linjun
dc.contributor.authorBansal, Ashu K.
dc.contributor.authorMatheson, Andrew
dc.contributor.authorLemke, Henrik T.
dc.contributor.authorNielsen, Martin M.
dc.contributor.authorNguyen, Ha
dc.contributor.authorCoulembier, Olivier
dc.contributor.authorDubois, Philippe
dc.contributor.authorBeljonne, David
dc.contributor.authorSamuel, Ifor D. W.
dc.date.accessioned2016-05-19T13:30:07Z
dc.date.available2016-05-19T13:30:07Z
dc.date.issued2013-11
dc.identifier242658542
dc.identifier820660e2-d38d-4dfa-acb0-1ca432a6053e
dc.identifier000330957200008
dc.identifier84887415936
dc.identifier.citationHaji Masri , M K Z , Ruseckas , A , Emelianova , E V , Wang , L , Bansal , A K , Matheson , A , Lemke , H T , Nielsen , M M , Nguyen , H , Coulembier , O , Dubois , P , Beljonne , D & Samuel , I D W 2013 , ' Molecular weight dependence of exciton diffusion in poly(3-hexylthiophene) ' , Advanced Energy Materials , vol. 3 , no. 11 , pp. 1445-1453 . https://doi.org/10.1002/aenm.201300210en
dc.identifier.issn1614-6832
dc.identifier.otherORCID: /0000-0001-9114-3522/work/32543068
dc.identifier.urihttps://hdl.handle.net/10023/8834
dc.descriptionZ.M. is grateful to the Government of Brunei Darussalam for financial support. The research at St Andrews leading to these results has received funding from the Engineering and Physical Sciences Research Council of the UK, and from the European Union Seventh Framework Programme under grant agreement number 321305.en
dc.description.abstractA joint experimental and theoretical study of singlet exciton diffusion in spin-coated poly(3-hexylthiophene) (P3HT) films and its dependence on molecular weight is presented. The results show that exciton diffusion is fast along the co-facial pi-pi aggregates of polymer chromophores and about 100 times slower in the lateral direction between aggregates. Exciton hopping between aggregates is found to show a subtle dependence on interchain coupling, aggregate size, and Boltzmann statistics. Additionally, a clear correlation is observed between the effective exciton diffusion coefficient, the degree of aggregation of chromophores, and exciton delocalization along the polymer chain, which suggests that exciton diffusion length can be enhanced by tailored synthesis and processing conditions.
dc.format.extent9
dc.format.extent1801987
dc.language.isoeng
dc.relation.ispartofAdvanced Energy Materialsen
dc.subjectPolythiophene filmsen
dc.subjectConjugated polymersen
dc.subjectCharge-transporten
dc.subjectPhotogenerationen
dc.subjectTransistorsen
dc.subjectP3HT/PCBMen
dc.subjectBlendsen
dc.subjectLengthen
dc.subjectRatesen
dc.subjectQC Physicsen
dc.subject.lccQCen
dc.titleMolecular weight dependence of exciton diffusion in poly(3-hexylthiophene)en
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doi10.1002/aenm.201300210
dc.description.statusPeer revieweden
dc.identifier.urlhttp://onlinelibrary.wiley.com/wol1/doi/10.1002/aenm.201300210/suppinfoen
dc.identifier.grantnumberen


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