Transient and d.c. analysis of the operation mechanism of light-emitting electrochemical cells

dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:02:33Z
dc.date.available2014-05-20T14:02:33Z
dc.date.created2014-05-20T14:02:33Z
dc.date.issued2012-10-01
dc.identifierEpl. Mulhouse: Epl Association, European Physical Society, v. 100, n. 1, p. 4, 2012.
dc.identifier0295-5075
dc.identifierhttp://hdl.handle.net/11449/22048
dc.identifier10.1209/0295-5075/100/18001
dc.identifierWOS:000310367300036
dc.description.abstractLight-emitting electrochemical cells (LECs) made of electroluminescent polymers were studied by d.c. and transient current-voltage and luminance-voltage measurements to elucidate the operation mechanisms of this kind of device. The time and external voltage necessary to form electrical double layers (EDLs) at the electrode interfaces could be determined from the results. In the low-and intermediate-voltage ranges (below 1.1 V), the ionic transport and the electronic diffusion dominate the current, being the device operation better described by an electrodynamic model. For higher voltages, electrochemical doping occurs, giving rise to the formation of a p-i-n junction, according to an electrochemical doping model. Copyright (C) EPLA, 2012
dc.languageeng
dc.publisherEpl Association, European Physical Society
dc.relationEPL
dc.relation1.834
dc.relation0,498
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleTransient and d.c. analysis of the operation mechanism of light-emitting electrochemical cells
dc.typeArtículos de revistas


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