Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires.
We have synthesized ternary InGaAs nanowires on (111)B GaAs surfaces by metal-organic chemical vapor deposition. Au colloidal nanoparticles were employed to catalyze nanowire growth. We observed the strong influence of nanowire density on nanowire height, tapering, and base shape specific to the nan...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1826295939429564416 |
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| author | Kim, Y Joyce, H Gao, Q Tan, H Jagadish, C Paladugu, M Zou, J Suvorova, A |
| author_facet | Kim, Y Joyce, H Gao, Q Tan, H Jagadish, C Paladugu, M Zou, J Suvorova, A |
| author_sort | Kim, Y |
| collection | OXFORD |
| description | We have synthesized ternary InGaAs nanowires on (111)B GaAs surfaces by metal-organic chemical vapor deposition. Au colloidal nanoparticles were employed to catalyze nanowire growth. We observed the strong influence of nanowire density on nanowire height, tapering, and base shape specific to the nanowires with high In composition. This dependency was attributed to the large difference of diffusion length on (111)B surfaces between In and Ga reaction species, with In being the more mobile species. Energy dispersive X-ray spectroscopy analysis together with high-resolution electron microscopy study of individual InGaAs nanowires shows large In/Ga compositional variation along the nanowire supporting the present diffusion model. Photoluminescence spectra exhibit a red shift with decreasing nanowire density due to the higher degree of In incorporation in more sparsely distributed InGaAs nanowires. |
| first_indexed | 2024-03-07T04:08:41Z |
| format | Journal article |
| id | oxford-uuid:c7148778-28cd-4192-ae0e-37cea229348f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:08:41Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:c7148778-28cd-4192-ae0e-37cea229348f2022-03-27T06:42:27ZInfluence of nanowire density on the shape and optical properties of ternary InGaAs nanowires.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c7148778-28cd-4192-ae0e-37cea229348fEnglishSymplectic Elements at Oxford2006Kim, YJoyce, HGao, QTan, HJagadish, CPaladugu, MZou, JSuvorova, AWe have synthesized ternary InGaAs nanowires on (111)B GaAs surfaces by metal-organic chemical vapor deposition. Au colloidal nanoparticles were employed to catalyze nanowire growth. We observed the strong influence of nanowire density on nanowire height, tapering, and base shape specific to the nanowires with high In composition. This dependency was attributed to the large difference of diffusion length on (111)B surfaces between In and Ga reaction species, with In being the more mobile species. Energy dispersive X-ray spectroscopy analysis together with high-resolution electron microscopy study of individual InGaAs nanowires shows large In/Ga compositional variation along the nanowire supporting the present diffusion model. Photoluminescence spectra exhibit a red shift with decreasing nanowire density due to the higher degree of In incorporation in more sparsely distributed InGaAs nanowires. |
| spellingShingle | Kim, Y Joyce, H Gao, Q Tan, H Jagadish, C Paladugu, M Zou, J Suvorova, A Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title | Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title_full | Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title_fullStr | Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title_full_unstemmed | Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title_short | Influence of nanowire density on the shape and optical properties of ternary InGaAs nanowires. |
| title_sort | influence of nanowire density on the shape and optical properties of ternary ingaas nanowires |
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