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Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks

[Image: see text] The controlled covalent functionalization of semiconducting single-walled carbon nanotubes (SWCNTs) with luminescent sp(3) defects leads to additional narrow and tunable photoluminescence features in the near-infrared and even enables single-photon emission at room temperature, thu...

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Autores principales: Zorn, Nicolas F., Berger, Felix J., Zaumseil, Jana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8223481/
https://www.ncbi.nlm.nih.gov/pubmed/34048654
http://dx.doi.org/10.1021/acsnano.1c02878
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author Zorn, Nicolas F.
Berger, Felix J.
Zaumseil, Jana
author_facet Zorn, Nicolas F.
Berger, Felix J.
Zaumseil, Jana
author_sort Zorn, Nicolas F.
collection PubMed
description [Image: see text] The controlled covalent functionalization of semiconducting single-walled carbon nanotubes (SWCNTs) with luminescent sp(3) defects leads to additional narrow and tunable photoluminescence features in the near-infrared and even enables single-photon emission at room temperature, thus strongly expanding their application potential. However, the successful integration of sp(3)-functionalized SWCNTs in optoelectronic devices with efficient defect state electroluminescence not only requires control over their emission properties but also a detailed understanding of the impact of functionalization on their electrical performance, especially in dense networks. Here, we demonstrate ambipolar, light-emitting field-effect transistors based on networks of pristine and functionalized polymer-sorted (6,5) SWCNTs. We investigate the influence of sp(3) defects on charge transport by employing electroluminescence and (charge-modulated) photoluminescence spectroscopy combined with temperature-dependent current–voltage measurements. We find that sp(3)-functionalized SWCNTs actively participate in charge transport within the network as mobile carriers efficiently sample the sp(3) defects, which act as shallow trap states. While both hole and electron mobilities decrease with increasing degree of functionalization, the transistors remain fully operational, showing electroluminescence from the defect states that can be tuned by the defect density.
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spelling pubmed-82234812021-06-25 Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks Zorn, Nicolas F. Berger, Felix J. Zaumseil, Jana ACS Nano [Image: see text] The controlled covalent functionalization of semiconducting single-walled carbon nanotubes (SWCNTs) with luminescent sp(3) defects leads to additional narrow and tunable photoluminescence features in the near-infrared and even enables single-photon emission at room temperature, thus strongly expanding their application potential. However, the successful integration of sp(3)-functionalized SWCNTs in optoelectronic devices with efficient defect state electroluminescence not only requires control over their emission properties but also a detailed understanding of the impact of functionalization on their electrical performance, especially in dense networks. Here, we demonstrate ambipolar, light-emitting field-effect transistors based on networks of pristine and functionalized polymer-sorted (6,5) SWCNTs. We investigate the influence of sp(3) defects on charge transport by employing electroluminescence and (charge-modulated) photoluminescence spectroscopy combined with temperature-dependent current–voltage measurements. We find that sp(3)-functionalized SWCNTs actively participate in charge transport within the network as mobile carriers efficiently sample the sp(3) defects, which act as shallow trap states. While both hole and electron mobilities decrease with increasing degree of functionalization, the transistors remain fully operational, showing electroluminescence from the defect states that can be tuned by the defect density. American Chemical Society 2021-05-28 2021-06-22 /pmc/articles/PMC8223481/ /pubmed/34048654 http://dx.doi.org/10.1021/acsnano.1c02878 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Zorn, Nicolas F.
Berger, Felix J.
Zaumseil, Jana
Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title_full Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title_fullStr Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title_full_unstemmed Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title_short Charge Transport in and Electroluminescence from sp(3)-Functionalized Carbon Nanotube Networks
title_sort charge transport in and electroluminescence from sp(3)-functionalized carbon nanotube networks
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8223481/
https://www.ncbi.nlm.nih.gov/pubmed/34048654
http://dx.doi.org/10.1021/acsnano.1c02878
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