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Operating organic light-emitting diodes imaged by super-resolution spectroscopy
Super-resolution stimulated emission depletion (STED) microscopy is adapted here for materials characterization that would not otherwise be possible. With the example of organic light-emitting diodes (OLEDs), spectral imaging with pixel-by-pixel wavelength discrimination allows us to resolve local-c...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5512612/ https://www.ncbi.nlm.nih.gov/pubmed/27325212 http://dx.doi.org/10.1038/ncomms11691 |
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author | King, John T. Granick, Steve |
author_facet | King, John T. Granick, Steve |
author_sort | King, John T. |
collection | PubMed |
description | Super-resolution stimulated emission depletion (STED) microscopy is adapted here for materials characterization that would not otherwise be possible. With the example of organic light-emitting diodes (OLEDs), spectral imaging with pixel-by-pixel wavelength discrimination allows us to resolve local-chain environment encoded in the spectral response of the semiconducting polymer, and correlate chain packing with local electroluminescence by using externally applied current as the excitation source. We observe nanoscopic defects that would be unresolvable by traditional microscopy. They are revealed in electroluminescence maps in operating OLEDs with 50 nm spatial resolution. We find that brightest emission comes from regions with more densely packed chains. Conventional microscopy of an operating OLED would lack the resolution needed to discriminate these features, while traditional methods to resolve nanoscale features generally cannot be performed when the device is operating. This points the way towards real-time analysis of materials design principles in devices as they actually operate. |
format | Online Article Text |
id | pubmed-5512612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-55126122017-07-19 Operating organic light-emitting diodes imaged by super-resolution spectroscopy King, John T. Granick, Steve Nat Commun Article Super-resolution stimulated emission depletion (STED) microscopy is adapted here for materials characterization that would not otherwise be possible. With the example of organic light-emitting diodes (OLEDs), spectral imaging with pixel-by-pixel wavelength discrimination allows us to resolve local-chain environment encoded in the spectral response of the semiconducting polymer, and correlate chain packing with local electroluminescence by using externally applied current as the excitation source. We observe nanoscopic defects that would be unresolvable by traditional microscopy. They are revealed in electroluminescence maps in operating OLEDs with 50 nm spatial resolution. We find that brightest emission comes from regions with more densely packed chains. Conventional microscopy of an operating OLED would lack the resolution needed to discriminate these features, while traditional methods to resolve nanoscale features generally cannot be performed when the device is operating. This points the way towards real-time analysis of materials design principles in devices as they actually operate. Nature Publishing Group 2016-06-21 /pmc/articles/PMC5512612/ /pubmed/27325212 http://dx.doi.org/10.1038/ncomms11691 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International 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 http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article King, John T. Granick, Steve Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title | Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title_full | Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title_fullStr | Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title_full_unstemmed | Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title_short | Operating organic light-emitting diodes imaged by super-resolution spectroscopy |
title_sort | operating organic light-emitting diodes imaged by super-resolution spectroscopy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5512612/ https://www.ncbi.nlm.nih.gov/pubmed/27325212 http://dx.doi.org/10.1038/ncomms11691 |
work_keys_str_mv | AT kingjohnt operatingorganiclightemittingdiodesimagedbysuperresolutionspectroscopy AT granicksteve operatingorganiclightemittingdiodesimagedbysuperresolutionspectroscopy |