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Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions
Room temperature magnetic field effects have not been definitively observed in either single-walled carbon nanotubes (SWCNTs) or C(60) under a small magnetic field due to their weak hyperfine interaction and slight difference of g-factor between positive and negative polarons. Here, we demonstrate c...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4141262/ https://www.ncbi.nlm.nih.gov/pubmed/25146555 http://dx.doi.org/10.1038/srep06126 |
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author | Qin, Wei Gong, Maogang Shastry, Tejas Hersam, Mark C. Ren, Shenqiang |
author_facet | Qin, Wei Gong, Maogang Shastry, Tejas Hersam, Mark C. Ren, Shenqiang |
author_sort | Qin, Wei |
collection | PubMed |
description | Room temperature magnetic field effects have not been definitively observed in either single-walled carbon nanotubes (SWCNTs) or C(60) under a small magnetic field due to their weak hyperfine interaction and slight difference of g-factor between positive and negative polarons. Here, we demonstrate charge-transfer induced magnetic field effects in nano-carbon C(60)-SWCNT bulk heterojunctions at room temperature, where the mechanism of magnetic field effects is verified using excited state transition modeling. By controlling SWCNT concentrations and interfacial interactions, nano-carbon heterojunctions exhibit tunability of charge-transfer density and room temperature magnetoconductance of 2.8% under 100 mT external magnetic field. External stimuli, such as electric field and photoexcitation, also play an important role in controlling the magnetic field effects of nano-carbon heterojunctions, which suggests that these findings could enable the control of optoelectronic properties of nano-carbon heterojunctions. |
format | Online Article Text |
id | pubmed-4141262 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-41412622014-08-22 Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions Qin, Wei Gong, Maogang Shastry, Tejas Hersam, Mark C. Ren, Shenqiang Sci Rep Article Room temperature magnetic field effects have not been definitively observed in either single-walled carbon nanotubes (SWCNTs) or C(60) under a small magnetic field due to their weak hyperfine interaction and slight difference of g-factor between positive and negative polarons. Here, we demonstrate charge-transfer induced magnetic field effects in nano-carbon C(60)-SWCNT bulk heterojunctions at room temperature, where the mechanism of magnetic field effects is verified using excited state transition modeling. By controlling SWCNT concentrations and interfacial interactions, nano-carbon heterojunctions exhibit tunability of charge-transfer density and room temperature magnetoconductance of 2.8% under 100 mT external magnetic field. External stimuli, such as electric field and photoexcitation, also play an important role in controlling the magnetic field effects of nano-carbon heterojunctions, which suggests that these findings could enable the control of optoelectronic properties of nano-carbon heterojunctions. Nature Publishing Group 2014-08-22 /pmc/articles/PMC4141262/ /pubmed/25146555 http://dx.doi.org/10.1038/srep06126 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 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 in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/ |
spellingShingle | Article Qin, Wei Gong, Maogang Shastry, Tejas Hersam, Mark C. Ren, Shenqiang Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title | Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title_full | Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title_fullStr | Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title_full_unstemmed | Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title_short | Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions |
title_sort | charge-transfer induced magnetic field effects of nano-carbon heterojunctions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4141262/ https://www.ncbi.nlm.nih.gov/pubmed/25146555 http://dx.doi.org/10.1038/srep06126 |
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