Polyfluorene as a model system for space-charge-limited conduction

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Polyfluorene as a model system for space-charge-limited conduction

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/6805

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dc.contributor.author Arif, Mohammad, 1974-
dc.contributor.author Yun, Minseong, 1978-
dc.contributor.author Gangopadhyay, Shubhra
dc.contributor.author Ghosh, K.
dc.contributor.author Fadiga, L.
dc.contributor.author Galbrecht, F.
dc.contributor.author Scherf, Ullrich
dc.contributor.author Guha, Suchi
dc.date.accessioned 2010-04-05T16:53:55Z
dc.date.available 2010-04-05T16:53:55Z
dc.date.issued 2008-02-04
dc.identifier.citation arXiv:cond-mat/0703554v1 en
dc.identifier.uri http://hdl.handle.net/10355/6805
dc.description.abstract Ethyl-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.sponsorship We gratefully acknowledge the support of this work through the National Science Foundation under grant Nos. ECS-0523656 and DMR-0413601. en
dc.language.iso en_US en
dc.publisher arXiv en
dc.relation.ispartof Physics and Astronomy publications en
dc.source.uri http://arxiv.org/PS_cache/cond-mat/pdf/0703/0703554v1.pdf en
dc.subject soft condensed matter en
dc.subject materials science en
dc.subject ethyl-hexyl substituted polyfluorene en
dc.subject.lcsh Fluorene en
dc.subject.lcsh Space charge en
dc.title Polyfluorene as a model system for space-charge-limited conduction en
dc.type Article en
dc.relation.ispartofcommunity University of Missouri-Columbia. College of Arts and Sciences. Department of Physics and Astronomy


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