Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms
Plasmons in the visible/UV energy regime have attracted great attention, especially in nano-materials, with regards to applications in opto-electronics and light harvesting; tailored enhancement of such plasmons is of particular interest for prospects in nano-plasmonics. This work demonstrates that...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/102625 http://hdl.handle.net/10220/46521 |
| _version_ | 1826128786333106176 |
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| author | Bangert, U. Pierce, W. Boothroyd, Christopher Pan, C.-T. Gwilliam, R. |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Bangert, U. Pierce, W. Boothroyd, Christopher Pan, C.-T. Gwilliam, R. |
| author_sort | Bangert, U. |
| collection | NTU |
| description | Plasmons in the visible/UV energy regime have attracted great attention, especially in nano-materials, with regards to applications in opto-electronics and light harvesting; tailored enhancement of such plasmons is of particular interest for prospects in nano-plasmonics. This work demonstrates that it is possible, by adequate doping, to create excitations in the visible/UV regime in nano-carbon materials, i.e., carbon nanotubes and graphene, with choice of suitable ad-atoms and dopants, which are introduced directly into the lattice by low energy ion implantation or added via deposition by evaporation. Investigations as to whether these excitations are of collective nature, i.e., have plasmonic character, are carried out via DFT calculations and experiment-based extraction of the dielectric function. They give evidence of collective excitation behaviour for a number of the introduced impurity species, including K, Ag, B, N, and Pd. It is furthermore demonstrated that such excitations can be concentrated at nano-features, e.g., along nano-holes in graphene through metal atoms adhering to the edges of these holes. |
| first_indexed | 2024-10-01T07:30:16Z |
| format | Journal Article |
| id | ntu-10356/102625 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:30:16Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/1026252023-07-14T15:46:12Z Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms Bangert, U. Pierce, W. Boothroyd, Christopher Pan, C.-T. Gwilliam, R. School of Materials Science & Engineering Plasmon Graphene DRNTU::Engineering::Materials Plasmons in the visible/UV energy regime have attracted great attention, especially in nano-materials, with regards to applications in opto-electronics and light harvesting; tailored enhancement of such plasmons is of particular interest for prospects in nano-plasmonics. This work demonstrates that it is possible, by adequate doping, to create excitations in the visible/UV regime in nano-carbon materials, i.e., carbon nanotubes and graphene, with choice of suitable ad-atoms and dopants, which are introduced directly into the lattice by low energy ion implantation or added via deposition by evaporation. Investigations as to whether these excitations are of collective nature, i.e., have plasmonic character, are carried out via DFT calculations and experiment-based extraction of the dielectric function. They give evidence of collective excitation behaviour for a number of the introduced impurity species, including K, Ag, B, N, and Pd. It is furthermore demonstrated that such excitations can be concentrated at nano-features, e.g., along nano-holes in graphene through metal atoms adhering to the edges of these holes. Published version 2018-11-01T08:25:07Z 2019-12-06T20:57:49Z 2018-11-01T08:25:07Z 2019-12-06T20:57:49Z 2016 Journal Article Bangert, U., Pierce, W., Boothroyd, C., Pan, C. T., & Gwilliam, R. (2016). Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms. Scientific Reports, 6, 27090-. doi:10.1038/srep27090(1). https://hdl.handle.net/10356/102625 http://hdl.handle.net/10220/46521 10.1038/srep27090 27271352 en Scientific Reports © 2016 The Authors (Nature Publishing Group). 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/ 10 p. application/pdf |
| spellingShingle | Plasmon Graphene DRNTU::Engineering::Materials Bangert, U. Pierce, W. Boothroyd, Christopher Pan, C.-T. Gwilliam, R. Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title | Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title_full | Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title_fullStr | Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title_full_unstemmed | Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title_short | Collective electronic excitations in the ultra violet regime in 2-D and 1-D carbon nanostructures achieved by the addition of foreign atoms |
| title_sort | collective electronic excitations in the ultra violet regime in 2 d and 1 d carbon nanostructures achieved by the addition of foreign atoms |
| topic | Plasmon Graphene DRNTU::Engineering::Materials |
| url | https://hdl.handle.net/10356/102625 http://hdl.handle.net/10220/46521 |
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