Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films
We carried out temperature-dependent photoluminescence measurements to investigate the influence of surface roughness on the phonon-assisted emission of the surface-tailored ZnO nanowires (NWs). For the rough ZnO NWs, the observation of strong defect emission with vibration peaks by the exciton-phon...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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2009
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| _version_ | 1797085012112179200 |
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| author | Hong, W Jo, G Choe, M Lee, T Sohn, J Welland, M |
| author_facet | Hong, W Jo, G Choe, M Lee, T Sohn, J Welland, M |
| author_sort | Hong, W |
| collection | OXFORD |
| description | We carried out temperature-dependent photoluminescence measurements to investigate the influence of surface roughness on the phonon-assisted emission of the surface-tailored ZnO nanowires (NWs). For the rough ZnO NWs, the observation of strong defect emission with vibration peaks by the exciton-phonon coupling reflects the presence of a high density of surface defects, resulting in a rapid shift to lower energy region of free exciton emission and a strong contribution of the first order phonon-assisted free exciton in ultraviolet emission. This investigation indicates that the surface defects associated with roughness have a significant influence on the phonon-assisted exciton emission. © 2009 American Institute of Physics. |
| first_indexed | 2024-03-07T02:03:12Z |
| format | Journal article |
| id | oxford-uuid:9e1531ab-580c-438a-81fd-5525377bda6b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:03:12Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:9e1531ab-580c-438a-81fd-5525377bda6b2022-03-27T00:47:35ZInfluence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial filmsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9e1531ab-580c-438a-81fd-5525377bda6bEnglishSymplectic Elements at Oxford2009Hong, WJo, GChoe, MLee, TSohn, JWelland, MWe carried out temperature-dependent photoluminescence measurements to investigate the influence of surface roughness on the phonon-assisted emission of the surface-tailored ZnO nanowires (NWs). For the rough ZnO NWs, the observation of strong defect emission with vibration peaks by the exciton-phonon coupling reflects the presence of a high density of surface defects, resulting in a rapid shift to lower energy region of free exciton emission and a strong contribution of the first order phonon-assisted free exciton in ultraviolet emission. This investigation indicates that the surface defects associated with roughness have a significant influence on the phonon-assisted exciton emission. © 2009 American Institute of Physics. |
| spellingShingle | Hong, W Jo, G Choe, M Lee, T Sohn, J Welland, M Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title | Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title_full | Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title_fullStr | Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title_full_unstemmed | Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title_short | Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films |
| title_sort | influence of surface structure on the phonon assisted emission process in the zno nanowires grown on homoepitaxial films |
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