Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence
ZnO nanowires were grown by vapor-transport and deposition on Au nanocluster covered fused and thermal silica and c-Si. The nanowire size and density depended strongly on the substrate type. By decreasing the O 2 to local Zn partial pressure ratio, the growth pattern changed to nanocombs and nanoshe...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00036951_v100_n23_p_Grinblat http://hdl.handle.net/20.500.12110/paper_00036951_v100_n23_p_Grinblat |
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paper:paper_00036951_v100_n23_p_Grinblat2023-06-08T14:24:37Z Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence Au nanoclusters Exciton photoluminescences Growth mechanisms Growth patterns Morphology changes Nanocombs Partial pressure ratio Substrate types Two-dimensional growth ZnO ZnO nanostructures ZnO nanowires Fused silica Nanowires Photoluminescence Silicon Vapors Zinc oxide ZnO nanowires were grown by vapor-transport and deposition on Au nanocluster covered fused and thermal silica and c-Si. The nanowire size and density depended strongly on the substrate type. By decreasing the O 2 to local Zn partial pressure ratio, the growth pattern changed to nanocombs and nanosheets. ZnO nanohedgehogs were found on bare c-Si. We observe a remarkable correlation between the defect to exciton photoluminescence intensity ratio and the nanostructures specific surface areas. These results indicate that changes in strain and O deficiency defects at surfaces are behind the observed morphology changes, one to two-dimensional growth transition, and corresponding luminescence. © 2012 American Institute of Physics. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00036951_v100_n23_p_Grinblat http://hdl.handle.net/20.500.12110/paper_00036951_v100_n23_p_Grinblat |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Au nanoclusters Exciton photoluminescences Growth mechanisms Growth patterns Morphology changes Nanocombs Partial pressure ratio Substrate types Two-dimensional growth ZnO ZnO nanostructures ZnO nanowires Fused silica Nanowires Photoluminescence Silicon Vapors Zinc oxide |
| spellingShingle |
Au nanoclusters Exciton photoluminescences Growth mechanisms Growth patterns Morphology changes Nanocombs Partial pressure ratio Substrate types Two-dimensional growth ZnO ZnO nanostructures ZnO nanowires Fused silica Nanowires Photoluminescence Silicon Vapors Zinc oxide Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| topic_facet |
Au nanoclusters Exciton photoluminescences Growth mechanisms Growth patterns Morphology changes Nanocombs Partial pressure ratio Substrate types Two-dimensional growth ZnO ZnO nanostructures ZnO nanowires Fused silica Nanowires Photoluminescence Silicon Vapors Zinc oxide |
| description |
ZnO nanowires were grown by vapor-transport and deposition on Au nanocluster covered fused and thermal silica and c-Si. The nanowire size and density depended strongly on the substrate type. By decreasing the O 2 to local Zn partial pressure ratio, the growth pattern changed to nanocombs and nanosheets. ZnO nanohedgehogs were found on bare c-Si. We observe a remarkable correlation between the defect to exciton photoluminescence intensity ratio and the nanostructures specific surface areas. These results indicate that changes in strain and O deficiency defects at surfaces are behind the observed morphology changes, one to two-dimensional growth transition, and corresponding luminescence. © 2012 American Institute of Physics. |
| title |
Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| title_short |
Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| title_full |
Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| title_fullStr |
Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| title_full_unstemmed |
Hierarchical ZnO nanostructures: Growth mechanisms and surface correlated photoluminescence |
| title_sort |
hierarchical zno nanostructures: growth mechanisms and surface correlated photoluminescence |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00036951_v100_n23_p_Grinblat http://hdl.handle.net/20.500.12110/paper_00036951_v100_n23_p_Grinblat |
| _version_ |
1768544389284495360 |