Quantum confinement effects in Ge nanocrystals
The exciton Bohr radius of bulk Ge is larger than that of Si, hence resulting more prominent quantum size effects. In this work, the electron structure of Ge nanocrystals is studied by means a sp³s* tight binding approximation. Comparing the theoretical calculations with experimental data, we conclu...
Збережено в:
| Дата: | 2005 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2005
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| Назва видання: | Functional Materials |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/138881 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Quantum confinement effects in Ge nanocrystals // A. Miranda, A.E. Ramos, L. Nino de Rivera, M. Cruz-Irisson // Functional Materials. — 2005. — Т. 12, № 4. — С. 674-679. — Бібліогр.: 14 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The exciton Bohr radius of bulk Ge is larger than that of Si, hence resulting more prominent quantum size effects. In this work, the electron structure of Ge nanocrystals is studied by means a sp³s* tight binding approximation. Comparing the theoretical calculations with experimental data, we conclude that, similar to the case of silicon, the blue-green photoluminescence of Ge nanocrystals probably comes from surface and the size dependent photoluminescence in the near infrared probably involves a deep trap in the gap of the nanocrystals. |
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