Selective growth of ZnTe on sapphire substrates using a SiO sub(2) mask
ZnTe/sapphire heterostructures have attracted attention for their suitable properties as a terahertz wave detector material. In this study, we focused on the selective growth of ZnTe on SiO sub(2)-masked sapphire substrates by molecular beam epitaxy (MBE). When ZnTe was grown at a high temperature (...
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| Veröffentlicht in: | Physica Status Solidi. B: Basic Solid State Physics 2016-11, Vol.253 (11), p.2265-2269 |
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| container_issue | 11 |
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| container_title | Physica Status Solidi. B: Basic Solid State Physics |
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| creator | Nakasu, Taizo Hattori, Shota Sun, Wei-Che Kobayashi, Masakazu |
| description | ZnTe/sapphire heterostructures have attracted attention for their suitable properties as a terahertz wave detector material. In this study, we focused on the selective growth of ZnTe on SiO sub(2)-masked sapphire substrates by molecular beam epitaxy (MBE). When ZnTe was grown at a high temperature (=350 degree C), low growth rate (0.3 mu mh super(-1)), and low J sub(Te)/J sub(Zn) flux ratio (0.83) compared with the conventional film growth conditions, the formation of ZnTe nuclei on the SiO sub(2) mask was avoided. The Te flux intensity significantly affected the selectivity of ZnTe growth. The selective growth of ZnTe on sapphire was revealed to be limited by the desorption of Te adatoms from the SiO sub(2). |
| doi_str_mv | 10.1002/pssb.201600317 |
| format | Article |
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| ispartof | Physica Status Solidi. B: Basic Solid State Physics, 2016-11, Vol.253 (11), p.2265-2269 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Flux Masks Molecular beam epitaxy Sapphire Silicon dioxide Solid state physics Substrates Zinc tellurides |
| title | Selective growth of ZnTe on sapphire substrates using a SiO sub(2) mask |
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