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Optical analysis of light-emitting electrochemical cells

The light-emitting electrochemical cell (LEC) is a contender for emerging applications of light, primarily because it offers low-cost solution fabrication of easily functionalized device architectures. The attractive properties originate in the in-situ formation of electrochemically doped transport...

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Autores principales: Lindh, E. Mattias, Lundberg, Petter, Lanz, Thomas, Edman, Ludvig
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6639418/
https://www.ncbi.nlm.nih.gov/pubmed/31320711
http://dx.doi.org/10.1038/s41598-019-46860-y
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author Lindh, E. Mattias
Lundberg, Petter
Lanz, Thomas
Edman, Ludvig
author_facet Lindh, E. Mattias
Lundberg, Petter
Lanz, Thomas
Edman, Ludvig
author_sort Lindh, E. Mattias
collection PubMed
description The light-emitting electrochemical cell (LEC) is a contender for emerging applications of light, primarily because it offers low-cost solution fabrication of easily functionalized device architectures. The attractive properties originate in the in-situ formation of electrochemically doped transport regions that enclose an emissive intrinsic region, but the understanding of how this intricate doping structure affects the optical performance of the LEC is largely lacking. We combine angle- and doping-dependent measurements and simulations, and demonstrate that the emission zone in our high-performance LEC is centered at ~30% of the active-layer thickness (d(al)) from the anode. We further find that the emission intensity and efficiency are undulating with d(al), and establish that the first emission maximum at d(al) ~ 100 nm is largely limited by the lossy coupling of excitons to the doping regions, whereas the most prominent loss channel at the second maximum at d(al) ~ 300 nm is wave-guided modes.
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spelling pubmed-66394182019-07-25 Optical analysis of light-emitting electrochemical cells Lindh, E. Mattias Lundberg, Petter Lanz, Thomas Edman, Ludvig Sci Rep Article The light-emitting electrochemical cell (LEC) is a contender for emerging applications of light, primarily because it offers low-cost solution fabrication of easily functionalized device architectures. The attractive properties originate in the in-situ formation of electrochemically doped transport regions that enclose an emissive intrinsic region, but the understanding of how this intricate doping structure affects the optical performance of the LEC is largely lacking. We combine angle- and doping-dependent measurements and simulations, and demonstrate that the emission zone in our high-performance LEC is centered at ~30% of the active-layer thickness (d(al)) from the anode. We further find that the emission intensity and efficiency are undulating with d(al), and establish that the first emission maximum at d(al) ~ 100 nm is largely limited by the lossy coupling of excitons to the doping regions, whereas the most prominent loss channel at the second maximum at d(al) ~ 300 nm is wave-guided modes. Nature Publishing Group UK 2019-07-18 /pmc/articles/PMC6639418/ /pubmed/31320711 http://dx.doi.org/10.1038/s41598-019-46860-y Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lindh, E. Mattias
Lundberg, Petter
Lanz, Thomas
Edman, Ludvig
Optical analysis of light-emitting electrochemical cells
title Optical analysis of light-emitting electrochemical cells
title_full Optical analysis of light-emitting electrochemical cells
title_fullStr Optical analysis of light-emitting electrochemical cells
title_full_unstemmed Optical analysis of light-emitting electrochemical cells
title_short Optical analysis of light-emitting electrochemical cells
title_sort optical analysis of light-emitting electrochemical cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6639418/
https://www.ncbi.nlm.nih.gov/pubmed/31320711
http://dx.doi.org/10.1038/s41598-019-46860-y
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