Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties
Bi2Te3 nanowires are promising candidates for thermoelectric applications. Vapor-liquid-solid growth of these nanowires is straightforward, but the traditional Au-catalyzed method is expected to lead to Au contamination and subsequently crystal defects. Here, we present a comparison of the Au-cataly...
| Main Authors: | , , , , , |
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| Format: | Journal article |
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American Institute of Physics
2017
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| _version_ | 1797054087318994944 |
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| author | Schoenherr, P Kojda, D Srot, V Fischer, S van Aken, P Hesjedal, T |
| author_facet | Schoenherr, P Kojda, D Srot, V Fischer, S van Aken, P Hesjedal, T |
| author_sort | Schoenherr, P |
| collection | OXFORD |
| description | Bi2Te3 nanowires are promising candidates for thermoelectric applications. Vapor-liquid-solid growth of these nanowires is straightforward, but the traditional Au-catalyzed method is expected to lead to Au contamination and subsequently crystal defects. Here, we present a comparison of the Au-catalyzed growth method with an alternative method using TiO2. We observe that the latter approach results in perfect quintuple layer nanowires, whilst using Au leads to mixed quintuple and septuple layer structures. Despite these differences, we surprisingly find only a negligible effect on their thermoelectric properties, namely conductivity and Seebeck coefficient. This result is relevant for the further optimization and engineering of thermoelectric nanomaterials for device applications. |
| first_indexed | 2024-03-06T18:52:38Z |
| format | Journal article |
| id | oxford-uuid:10c539dd-87a8-4262-8d81-2811b7b7e925 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:52:38Z |
| publishDate | 2017 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | oxford-uuid:10c539dd-87a8-4262-8d81-2811b7b7e9252022-03-26T09:58:13ZPerfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric propertiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:10c539dd-87a8-4262-8d81-2811b7b7e925Symplectic Elements at OxfordAmerican Institute of Physics2017Schoenherr, PKojda, DSrot, VFischer, Svan Aken, PHesjedal, TBi2Te3 nanowires are promising candidates for thermoelectric applications. Vapor-liquid-solid growth of these nanowires is straightforward, but the traditional Au-catalyzed method is expected to lead to Au contamination and subsequently crystal defects. Here, we present a comparison of the Au-catalyzed growth method with an alternative method using TiO2. We observe that the latter approach results in perfect quintuple layer nanowires, whilst using Au leads to mixed quintuple and septuple layer structures. Despite these differences, we surprisingly find only a negligible effect on their thermoelectric properties, namely conductivity and Seebeck coefficient. This result is relevant for the further optimization and engineering of thermoelectric nanomaterials for device applications. |
| spellingShingle | Schoenherr, P Kojda, D Srot, V Fischer, S van Aken, P Hesjedal, T Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title | Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title_full | Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title_fullStr | Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title_full_unstemmed | Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title_short | Perfect quintuple layer Bi₂Te₃ nanowires: Growth and thermoelectric properties |
| title_sort | perfect quintuple layer bi₂te₃ nanowires growth and thermoelectric properties |
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