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2021-05-12Zeitschriftenartikel DOI: 10.18452/23485
High performance organic light-emitting diodes employing ITO-free and flexible TiOx/Ag/Al:ZnO electrodes
dc.contributor.authorKinner, Lukas
dc.contributor.authorDimopoulos, Theodoros
dc.contributor.authorLigorio, Giovanni
dc.contributor.authorList-Kratochvil, Emil J.W.
dc.contributor.authorHermerschmidt, Felix
dc.date.accessioned2021-10-12T12:07:25Z
dc.date.available2021-10-12T12:07:25Z
dc.date.issued2021-05-12none
dc.identifier.urihttp://edoc.hu-berlin.de/18452/24161
dc.descriptionThis article was supported by the German Research Foundation (DFG) and the Open Access Publication Fund of Humboldt-Universität zu Berlin.none
dc.description.abstractThe broad application of flexible optoelectronic devices is still hampered by the lack of an ITO-free and highly flexible transparent electrode. Dielectric/metal/dielectric (DMD) transparent electrodes are promising candidates to replace ITO, especially in flexible devices due to their mechanical stability to bending, high optical transmittance and low sheet resistance (<6 Ω sq−1). This paper reports on organic light emitting diodes (OLEDs) employing a DMD electrode, specifically TiOx/Ag/Al:ZnO (doped with 2 wt% Al2O3) fabricated by sputter deposition, together with a solution-processed organic polymeric emitting layer. The electrodes were sputtered without substrate heating on rigid glass and flexible polyethylene terephthalate (PET). The results showed that the OLED devices on the DMD electrodes outperform the OLEDs on commercial ITO substrates in terms of maximum luminance as well as current efficacy. Specifically, DMD-based devices achieve up to 30% higher current efficacy on glass and up to 260% higher efficacy on PET, as compared to the ITO-based reference devices. Maximum luminance reaches up to 100 000 cd m−2 for the DMD-based OLEDs on glass and 43 000 cd m−2 for those on PET. This performance is due to the low sheet resistance of the electrodes combined with efficient light outcoupling and shows the potential of DMDs to replace ITO in optoelectronic devices. This outstanding type of optoelectronic device paves the way for the future high throughput production of flexible display and photovoltaic devices.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftennone
dc.titleHigh performance organic light-emitting diodes employing ITO-free and flexible TiOx/Ag/Al:ZnO electrodesnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/24161-8
dc.identifier.doihttp://dx.doi.org/10.18452/23485
dc.type.versionpublishedVersionnone
local.edoc.pages8none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2046-2069
dcterms.bibliographicCitation.doi10.1039/D1RA02214H
dcterms.bibliographicCitation.journaltitleRSC Advancesnone
dcterms.bibliographicCitation.volume11none
dcterms.bibliographicCitation.originalpublishernameRSC Publishingnone
dcterms.bibliographicCitation.originalpublisherplaceLondonnone
dcterms.bibliographicCitation.pagestart17324none
dcterms.bibliographicCitation.pageend17331none
bua.departmentMathematisch-Naturwissenschaftliche Fakultätnone

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