Band structure of non-steiochiometric large-sized nanocrystallites
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Band structure of non-steiochiometric large-sized nanocrystallites
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| Creator |
Kityk, I.V.
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| Description |
A band structure of large-sized (from 20 to 35nm) non-steichiometric nanocrystallites (NC) of the Si₂₋xCx (1.04 using different band energy approaches and a modified Car-Parinello molecular dynamics structure optimization of the NC interfaces. The nonsteichiometric excess of carbon favors the appearance of a thin prevailingly carbon-contained layer (with thickness of about 1 nm) covering the crystallites. As a consequence, one can observe a substantial structure reconstruction of boundary SiC crystalline layers. The numerical modeling has shown that these NC can be considered as SiC reconstructed crystalline films with thickness of about 2 nm covering the SiC crystallites. The observed data are considered within the different one-electron band structure methods. It was shown that the nano-sized carbon sheet plays a key role in a modified band structure. Independent manifestation of the important role played by the reconstructed confined layers is due to the experimentally discovered excitonic-like resonances. Low-temperature absorption measurements confirm the existence of sharp-like absorption resonances originating from the reconstructed layers. Досліджено зонну структуру широко-розмірних Si₂₋xCx (1.04 |
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| Date |
2017-06-01T15:57:29Z
2017-06-01T15:57:29Z 2004 |
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| Type |
Article
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| Identifier |
Band structure of non-steiochiometric large-sized nanocrystallites / I.V. Kityk // Condensed Matter Physics. — 2004. — Т. 7, № 2(38). — С. 401–420. — Бібліогр.: 27 назв. — англ.
1607-324X PACS: 71.20 DOI:10.5488/CMP.7.2.401 http://dspace.nbuv.gov.ua/handle/123456789/118964 |
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| Language |
en
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| Relation |
Condensed Matter Physics
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| Publisher |
Інститут фізики конденсованих систем НАН України
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