dc.contributor.author | Arif, Mohammad, 1974- | eng |
dc.contributor.author | Yun, Minseong, 1978- | eng |
dc.contributor.author | Gangopadhyay, Shubhra | eng |
dc.contributor.author | Ghosh, K. | eng |
dc.contributor.author | Fadiga, L. | eng |
dc.contributor.author | Galbrecht, F. | eng |
dc.contributor.author | Scherf, Ullrich | eng |
dc.contributor.author | Guha, Suchi | eng |
dc.date.issued | 2008 | eng |
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. | eng |
dc.description.sponsorship | We gratefully acknowledge the support of this work through the National Science Foundation
under grant Nos. ECS-0523656 and DMR-0413601. | eng |
dc.identifier.citation | arXiv:cond-mat/0703554v1 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/6805 | eng |
dc.language | English | eng |
dc.publisher | arXiv | eng |
dc.relation.ispartofcollection | University of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publications | eng |
dc.rights | OpenAccess. | eng |
dc.rights.license | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. | |
dc.source.uri | http://arxiv.org/PS_cache/cond-mat/pdf/0703/0703554v1.pdf | eng |
dc.subject | soft condensed matter | eng |
dc.subject | materials science | eng |
dc.subject | ethyl-hexyl substituted polyfluorene | eng |
dc.subject.lcsh | Fluorene | eng |
dc.subject.lcsh | Space charge | eng |
dc.title | Polyfluorene as a model system for space-charge-limited conduction | eng |
dc.type | Article | eng |