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dc.contributor.authorArif, Mohammad, 1974-
dc.contributor.authorYun, Minseong, 1978-
dc.contributor.authorGangopadhyay, Shubhra
dc.contributor.authorGhosh, K.
dc.contributor.authorFadiga, L.
dc.contributor.authorGalbrecht, F.
dc.contributor.authorScherf, Ullrich
dc.contributor.authorGuha, Suchi
dc.date.issued2008-02eng
dc.description.abstractEthyl-hexyl substituted polyfluorene (PF) with its high level of molecular disorder can be described very well by one-carrier space-charge-limited conduction for a discrete set of trap levels with energy $\sim$ 0.5 eV above the valence band edge. Sweeping the bias above the trap-filling limit in the as-is polymer generates a new set of exponential traps, which is clearly seen in the density of states calculations. The trapped charges in the new set of traps have very long lifetimes and can be detrapped by photoexcitation. Thermal cycling the PF film to a crystalline phase prevents creation of additional traps at higher voltages.en
dc.description.sponsorshipWe gratefully acknowledge the support of this work through the National Science Foundation under grant Nos. ECS-0523656 and DMR-0413601.en
dc.identifier.citationarXiv:cond-mat/0703554v1en
dc.identifier.urihttp://hdl.handle.net/10355/6805
dc.publisherarXiven
dc.relation.ispartofPhysics and Astronomy publicationsen
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. College of Arts and Sciences. Department of Physics and Astronomy
dc.source.urihttp://arxiv.org/PS_cache/cond-mat/pdf/0703/0703554v1.pdfen
dc.subjectsoft condensed matteren
dc.subjectmaterials scienceen
dc.subjectethyl-hexyl substituted polyfluoreneen
dc.subject.lcshFluoreneen
dc.subject.lcshSpace chargeen
dc.titlePolyfluorene as a model system for space-charge-limited conductionen
dc.typeArticleen


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