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Illuminating the electrolyte in light-emitting electrochemical cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry. Umea Univ, Dept Phys, Organ Photon & Elect Grp, SE-90187 Umea, Sweden..
Umea Univ, Dept Phys, Organ Photon & Elect Grp, SE-90187 Umea, Sweden..
2016 (English)In: Journal of Materials Chemistry C, ISSN 2050-7526, E-ISSN 2050-7534, Vol. 4, no 3, 420-432 p.Article, review/survey (Refereed) Published
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Abstract [en]

Light-emitting electrochemical cells (LECs) convert electric current to light within an active material comprising an electroluminescent organic semiconductor and an electrolyte. It is well established that it is the presence of this electrolyte that enabled the recent development of low-cost fabrication methods of functional LECs as well as the realisation of unique device architectures. At the same time, it should be acknowledged that the current lower performance of LECs in comparison to the more commonplace organic light-emitting diode, at least in part, is intimately linked to the utilisation of non-ideal electrolytes. In this review, we present the tasks that the electrolyte should fulfil during the various stages of LEC operation, and how the characteristics of the electrolyte can affect the LEC performance, specifically the turn-on time, the efficiency and the operational stability. We thereafter introduce the different classes of electrolytes that have been implemented in LEC devices up to date, and discuss how these electrolytes have been able to meet the specific requirements of the LEC technology.

Place, publisher, year, edition, pages
2016. Vol. 4, no 3, 420-432 p.
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-280998DOI: 10.1039/c5tc03429aISI: 000367985700001OAI: oai:DiVA.org:uu-280998DiVA: diva2:916137
Funder
Swedish Foundation for Strategic Research Swedish Research CouncilSwedish Energy AgencyThe Kempe FoundationsKnut and Alice Wallenberg Foundation
Available from: 2016-04-01 Created: 2016-03-16 Last updated: 2017-11-30Bibliographically approved

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Mindemark, Jonas

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