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

dc.contributor.authorGozzi, Giovani
dc.contributor.authorSantos, Lucas F. [UNESP]
dc.contributor.authorFaria, Roberto M.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:02:33Z
dc.date.available2014-05-20T14:02:33Z
dc.date.issued2012-10-01
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, 2012en
dc.description.affiliationUniv São Paulo, Dept Fis & Ciência Mat, IFSC, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Fis, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Fis, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipNational Institute for Science and Technology on Organic Electronics (INEO)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent4
dc.identifierhttp://dx.doi.org/10.1209/0295-5075/100/18001
dc.identifier.citationEpl. Mulhouse: Epl Association, European Physical Society, v. 100, n. 1, p. 4, 2012.
dc.identifier.doi10.1209/0295-5075/100/18001
dc.identifier.issn0295-5075
dc.identifier.urihttp://hdl.handle.net/11449/22048
dc.identifier.wosWOS:000310367300036
dc.language.isoeng
dc.publisherEpl Association, European Physical Society
dc.relation.ispartofEPL
dc.relation.ispartofjcr1.834
dc.relation.ispartofsjr0,498
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleTransient and d.c. analysis of the operation mechanism of light-emitting electrochemical cellsen
dc.typeArtigo
dcterms.rightsHolderEpl Association, European Physical Society
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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