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dc.contributor.authorFroebel, Markus
dc.contributor.authorSchwab, Tobias
dc.contributor.authorKliem, Mona
dc.contributor.authorHofmann, Simone
dc.contributor.authorLeo, Karl
dc.contributor.authorGather, Malte C.
dc.identifier.citationFroebel , M , Schwab , T , Kliem , M , Hofmann , S , Leo , K & Gather , M C 2015 , ' Get it white : color-tunable AC/DC OLEDs ' , Light: Science & Applications , vol. 4 , e247 .
dc.identifier.otherPURE: 182345142
dc.identifier.otherPURE UUID: a5e3ea78-e4b1-4ddb-a2b0-5476faed6818
dc.identifier.otherWOS: 000350748900001
dc.identifier.otherScopus: 84989356205
dc.identifier.otherORCID: /0000-0002-4857-5562/work/47136441
dc.identifier.otherWOS: 000350748900001
dc.descriptionThis work was funded by the European Social Fund and the Free State of Saxony through the OrthoPhoto project. We kindly acknowledge the support from NUDEV.en
dc.description.abstractOrganic light-emitting diodes (OLEDs) have gained considerable attention because of their use of inherently flexible materials and their compatibility with facile roll-to-roll and printing processes. In addition to high efficiency, flexibility and transparency, reliable color tunability of solid state light sources is a desirable feature in the lighting and display industry. Here, we demonstrate a device concept for highly efficient organic light-emitting devices whose emission color can be easily adjusted from deep-blue through cold-white and warm-white to saturated yellow. Our approach exploits the different polarities of the positive and negative half-cycles of an alternating current (AC) driving signal to independently address a fluorescent blue emission unit and a phosphorescent yellow emission unit which are vertically stacked on top of each other. The electrode design is optimized for simple fabrication and driving and allows for two-terminal operation by a single source. The presented concept for color-tunable OLEDs is compatible with application requirements and versatile in terms of emitter combinations.
dc.relation.ispartofLight: Science & Applicationsen
dc.rightsCopyright 2015 the Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
dc.subjectAlternating currenten
dc.subjectColor mixingen
dc.subjectColor tuningen
dc.subjectVertical stackingen
dc.subjectWhite organic light-emitting devicesen
dc.subjectTop electrodesen
dc.subjectQC Physicsen
dc.titleGet it white : color-tunable AC/DC OLEDsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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