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Lithium fluoride injection layers can form quasi-Ohmic contacts for both holes and electrons

2014-09Journal article Open access
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dc.contributor.authorBory, Benjamin F.
dc.contributor.authorRocha, Paulo
dc.contributor.authorJanssen, Rene A. J.
dc.contributor.authorGomes, Henrique L.
dc.contributor.authorDe Leeuw, Dago M.
dc.contributor.authorMeskers, Stefan C. J.
dc.date.accessioned2018-12-07T14:58:17Z
dc.date.available2018-12-07T14:58:17Z
dc.date.issued2014-09
dc.description.abstractThin LiF interlayers are typically used in organic light-emitting diodes to enhance the electron injection. Here, we show that the effective work function of a contact with a LiF interlayer can be either raised or lowered depending on the history of the applied bias. Formation of quasi-Ohmic contacts for both electrons and holes is demonstrated by electroluminescence from symmetric LiF/polymer/LiF diodes in both bias polarities. The origin of the dynamic switching is charging of electrically induced Frenkel defects. The current density-electroluminescence-voltage characteristics can qualitatively be explained. The interpretation is corroborated by unipolar memristive switching and by bias dependent reflection measurements. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
dc.description.sponsorshipDutch Polymer Institute (DPI) [704]; Fundacao para Ciencia e Tecnologia (FCT) through research Unit, Center of Electronics Optoelectronics and Telecommunications (CEOT) [631]; European Community [212311]; Dutch Ministry of Education, Culture and Science [024.001.035]
dc.identifier.doihttps://doi.org/10.1063/1.4896636
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.urihttp://hdl.handle.net/10400.1/11947
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAIP Publishing
dc.relationOrganic Nanomaterials for Electronics and Photonics: Design, Synthesis, Characterization, Processing, Fabrication and Applications
dc.subjectLight-Emitting-Diodes
dc.subjectAlkali-Halides
dc.subjectAl/Lif Electrode
dc.subjectExcitation
dc.titleLithium fluoride injection layers can form quasi-Ohmic contacts for both holes and electrons
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleOrganic Nanomaterials for Electronics and Photonics: Design, Synthesis, Characterization, Processing, Fabrication and Applications
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/212311/EU
oaire.citation.issue12
oaire.citation.startPage123302
oaire.citation.titleApplied Physics Letters
oaire.citation.volume105
oaire.fundingStreamFP7
person.familyNameRocha
person.familyNameGomes
person.givenNamePaulo
person.givenNameHenrique Leonel
person.identifier534265
person.identifier.ciencia-id2810-CAC1-6CA3
person.identifier.orcid0000-0002-8917-9101
person.identifier.orcid0000-0003-3664-4740
person.identifier.ridL-1223-2015
person.identifier.scopus-author-id36773579600
person.identifier.scopus-author-id7005305880
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublicatione7993271-11b1-4028-ac2e-88d631d67381
relation.isAuthorOfPublication6da677b9-927f-423d-8657-448a0dccb67c
relation.isAuthorOfPublication.latestForDiscovery6da677b9-927f-423d-8657-448a0dccb67c
relation.isProjectOfPublicationb34bb083-ec86-4f52-94fe-5db69597fec4
relation.isProjectOfPublication.latestForDiscoveryb34bb083-ec86-4f52-94fe-5db69597fec4

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