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dc.contributor.authorSajjad, Muhammad T.
dc.contributor.authorWard, Alexander J.
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorBansal, Ashu K.
dc.contributor.authorAllard, Sybille
dc.contributor.authorScherf, Ullrich
dc.contributor.authorSamuel, Ifor D. W.
dc.identifier.citationSajjad , M T , Ward , A J , Ruseckas , A , Bansal , A K , Allard , S , Scherf , U & Samuel , I D W 2018 , ' Tuning the exciton diffusion coefficient of polyfluorene based semiconducting polymers ' , Physica Status Solidi - Rapid Research Letters , vol. Early View , 1800500 .
dc.identifier.otherPURE: 257352497
dc.identifier.otherPURE UUID: 50bf778e-bc9a-441e-a8bf-c7903107a9dc
dc.identifier.otherRIS: urn:F9A7BA3B9A3A952109D3BF609286E507
dc.identifier.otherScopus: 85058308450
dc.identifier.otherORCID: /0000-0001-9114-3522/work/52888737
dc.identifier.otherWOS: 000460697100005
dc.descriptionThe authors acknowledge financial support from FP7 project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro‐patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)” – LAMP project (G.A. 247928). M.T.S., A.R., and I.D.W.S. acknowledge support from the European Research Council (EXCITON grant 321305). I.D.W.S. acknowledges a Royal Society Wolfson Research Merit Award. The authors are grateful to EPSRC for an equipment grant (EP/L017008/1).en
dc.description.abstractExciton diffusion plays an important role in functional materials used in organic optoelectronic devices, such as solar cells, organic light emitting diodes, and lasers. Here we explore how exciton diffusion can be controlled in highly fluorescent blue‐emitting polyfluorene materials by changing the length and type of side chains. We find that the exciton diffusion coefficient (D) decreases from 1.2 × 10−3 cm2 s−1 to 0.2×10−3 cm2 s−1 when the side chain length is increased from 8 to 12 carbon atoms. Other changes to the side chains led to enhancement of D up to 1.6 × 10−3 cm2 s−1. Our results show that small adjustments to the molecular structure can be helpful for the future development of high‐brightness organic light emitting devices.
dc.relation.ispartofPhysica Status Solidi - Rapid Research Lettersen
dc.rightsCopyright © 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectExciton diffusionen
dc.subjectLight emitting polymersen
dc.subjectQC Physicsen
dc.titleTuning the exciton diffusion coefficient of polyfluorene based semiconducting polymersen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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