Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping
Auger-ionized free-carriers in a one-dimensional semiconductor are predicted to result in a strong band-gap renormalization. Isolated single-walled carbon nanotubes (SWCNT) under high-intensity laser irradiation exhibit strong nonlinear photoluminescence (PL) due to exciton–exciton annihilation (EEA...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/2/023051 |
| _version_ | 1827873566802051072 |
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| author | Mitchell D Anderson Meghan N Beattie Jack A Alexander-Webber Robin J Nicholas James M Fraser |
| author_facet | Mitchell D Anderson Meghan N Beattie Jack A Alexander-Webber Robin J Nicholas James M Fraser |
| author_sort | Mitchell D Anderson |
| collection | DOAJ |
| description | Auger-ionized free-carriers in a one-dimensional semiconductor are predicted to result in a strong band-gap renormalization. Isolated single-walled carbon nanotubes (SWCNT) under high-intensity laser irradiation exhibit strong nonlinear photoluminescence (PL) due to exciton–exciton annihilation (EEA). The presence of exciton disassociation during the rapid Auger-ionization caused by EEA would lead to a strong nonlinear absorption. By simultaneously measuring SWCNT–PL and optical absorption of isolated SWCNT clusters in the PL saturation regime, we give evidence that Auger-ionized excitons do not disassociate but remain bound. |
| first_indexed | 2024-03-12T16:38:55Z |
| format | Article |
| id | doaj.art-dc13322312ee489ca33a8c777cb9e68a |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:38:55Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-dc13322312ee489ca33a8c777cb9e68a2023-08-08T14:38:22ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118202305110.1088/1367-2630/18/2/023051Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodopingMitchell D Anderson0https://orcid.org/0000-0001-5352-325XMeghan N Beattie1https://orcid.org/0000-0001-5160-1138Jack A Alexander-Webber2Robin J Nicholas3James M Fraser4Department of Physics, Engineering Physics & Astronomy, Queen's University , Kingston, Ontario K7L 3N6, CanadaDepartment of Physics, Engineering Physics & Astronomy, Queen's University , Kingston, Ontario K7L 3N6, CanadaDepartment of Physics, Clarendon Laboratory , Parks Road, Oxford, OX1 3PU, UKDepartment of Physics, Clarendon Laboratory , Parks Road, Oxford, OX1 3PU, UKDepartment of Physics, Engineering Physics & Astronomy, Queen's University , Kingston, Ontario K7L 3N6, CanadaAuger-ionized free-carriers in a one-dimensional semiconductor are predicted to result in a strong band-gap renormalization. Isolated single-walled carbon nanotubes (SWCNT) under high-intensity laser irradiation exhibit strong nonlinear photoluminescence (PL) due to exciton–exciton annihilation (EEA). The presence of exciton disassociation during the rapid Auger-ionization caused by EEA would lead to a strong nonlinear absorption. By simultaneously measuring SWCNT–PL and optical absorption of isolated SWCNT clusters in the PL saturation regime, we give evidence that Auger-ionized excitons do not disassociate but remain bound.https://doi.org/10.1088/1367-2630/18/2/023051carbon nanotubephotoluminescenceoptical absorptionAuger ionizationfree-carrier generationsingle-walled carbon nanotube |
| spellingShingle | Mitchell D Anderson Meghan N Beattie Jack A Alexander-Webber Robin J Nicholas James M Fraser Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping New Journal of Physics carbon nanotube photoluminescence optical absorption Auger ionization free-carrier generation single-walled carbon nanotube |
| title | Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping |
| title_full | Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping |
| title_fullStr | Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping |
| title_full_unstemmed | Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping |
| title_short | Independence of optical absorption on Auger ionization in single-walled carbon nanotubes revealed by ultrafast e–h photodoping |
| title_sort | independence of optical absorption on auger ionization in single walled carbon nanotubes revealed by ultrafast e h photodoping |
| topic | carbon nanotube photoluminescence optical absorption Auger ionization free-carrier generation single-walled carbon nanotube |
| url | https://doi.org/10.1088/1367-2630/18/2/023051 |
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