A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping
The exploitation of Si nanostructures for electronic and optoelectronic devices depends on their electronic doping. We investigate a methodology for As doping of Si nanostructures taking advantages of ion beam implantation and nanosecond laser irradiation melting dynamics. We illustrate the behaviou...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/635705 |
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| author | F. Ruffino L. Romano E. Carria M. Miritello M. G. Grimaldi V. Privitera F. Marabelli |
| author_facet | F. Ruffino L. Romano E. Carria M. Miritello M. G. Grimaldi V. Privitera F. Marabelli |
| author_sort | F. Ruffino |
| collection | DOAJ |
| description | The exploitation of Si nanostructures for electronic and optoelectronic devices depends on their electronic doping. We investigate a methodology for As doping of Si nanostructures taking advantages of ion beam implantation and nanosecond laser irradiation melting dynamics. We illustrate the behaviour of As when it is confined, by the implantation technique, in a SiO2/Si/SiO2 multilayer and its spatial redistribution after annealing processes. As accumulation at the Si/SiO2 interfaces was observed by Rutherford backscattering spectrometry in agreement with a model that assumes a traps distribution in the Si in the first 2-3 nm above the SiO2/Si interfaces. A concentration of 1014 traps/cm2 has been evaluated. This result opens perspectives for As doping of Si nanoclusters embedded in SiO2 since a Si nanocluster of radius 1 nm embedded in SiO2 should trap 13 As atoms at the interface. In order to promote the As incorporation in the nanoclusters for an effective doping, an approach based on ion implantation and nanosecond laser irradiation was investigated. Si nanoclusters were produced in SiO2 layer. After As ion implantation and nanosecond laser irradiation, spectroscopic ellipsometry measurements show nanoclusters optical properties consistent with their effective doping. |
| format | Article |
| id | doaj-art-cefb128542814676842d8940852fa526 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-cefb128542814676842d8940852fa5262025-02-03T01:23:16ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/635705635705A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures DopingF. Ruffino0L. Romano1E. Carria2M. Miritello3M. G. Grimaldi4V. Privitera5F. Marabelli6Dipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123 Catania, ItalyDipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123 Catania, ItalyDipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123 Catania, ItalyMATIS, CNR, IMM, via S. Sofia 64, 95123 Catania, ItalyDipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123 Catania, ItalyMATIS, CNR, IMM, via S. Sofia 64, 95123 Catania, ItalyDipartimento di Fisica “A.Volta,” Università degli Studi di Pavia, via Bassi 6, 27100 Pavia, ItalyThe exploitation of Si nanostructures for electronic and optoelectronic devices depends on their electronic doping. We investigate a methodology for As doping of Si nanostructures taking advantages of ion beam implantation and nanosecond laser irradiation melting dynamics. We illustrate the behaviour of As when it is confined, by the implantation technique, in a SiO2/Si/SiO2 multilayer and its spatial redistribution after annealing processes. As accumulation at the Si/SiO2 interfaces was observed by Rutherford backscattering spectrometry in agreement with a model that assumes a traps distribution in the Si in the first 2-3 nm above the SiO2/Si interfaces. A concentration of 1014 traps/cm2 has been evaluated. This result opens perspectives for As doping of Si nanoclusters embedded in SiO2 since a Si nanocluster of radius 1 nm embedded in SiO2 should trap 13 As atoms at the interface. In order to promote the As incorporation in the nanoclusters for an effective doping, an approach based on ion implantation and nanosecond laser irradiation was investigated. Si nanoclusters were produced in SiO2 layer. After As ion implantation and nanosecond laser irradiation, spectroscopic ellipsometry measurements show nanoclusters optical properties consistent with their effective doping.http://dx.doi.org/10.1155/2012/635705 |
| spellingShingle | F. Ruffino L. Romano E. Carria M. Miritello M. G. Grimaldi V. Privitera F. Marabelli A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping Journal of Nanotechnology |
| title | A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping |
| title_full | A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping |
| title_fullStr | A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping |
| title_full_unstemmed | A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping |
| title_short | A Combined Ion Implantation/Nanosecond Laser Irradiation Approach towards Si Nanostructures Doping |
| title_sort | combined ion implantation nanosecond laser irradiation approach towards si nanostructures doping |
| url | http://dx.doi.org/10.1155/2012/635705 |
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