Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals
We have found that the long wavelength fundamental absorption edge of CdSXSe₁-x nanocrystals grown in an oxide glass follows to the generalized Urbach rule that takes into account both the dynamic (phonon induced) and static (defect induced) disorders of nanocrystal lattice. Temperature intervals wi...
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| Veröffentlicht in: | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Datum: | 2002 |
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| Sprache: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2002
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/119569 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals / V.P. Kunets, N.R. Kulish, Vas.P. Kunets, M.P. Lisitsa // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2002. — Т. 5, № 1. — С. 9-15. — Бібліогр.: 16 назв. — англ. |
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Kunets, V.P. Kulish, N.R. Kunets, Vas.P. Lisitsa, M.P. 2017-06-07T12:41:55Z 2017-06-07T12:41:55Z 2002 Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals / V.P. Kunets, N.R. Kulish, Vas.P. Kunets, M.P. Lisitsa // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2002. — Т. 5, № 1. — С. 9-15. — Бібліогр.: 16 назв. — англ. 1560-8034 PACS: 78.67. Bf, 78.67.Hc https://nasplib.isofts.kiev.ua/handle/123456789/119569 We have found that the long wavelength fundamental absorption edge of CdSXSe₁-x nanocrystals grown in an oxide glass follows to the generalized Urbach rule that takes into account both the dynamic (phonon induced) and static (defect induced) disorders of nanocrystal lattice. Temperature intervals with the dominant influence of both disorders on the absorption edge were determined. We have also estimated Urbach rule constants comparing them with the bulk ones. Using various Urbach`s rule theories we analyzed the most considerable changes of nanocrystal parameters when their sizes are decreased down to the quantum scale. It was found that the exciton-phonon coupling constant and exciton localization one are increased; the average electric fields induced by phonons and charged point defects are also increased. The authors thank to Malysh N.1. for his assistance in measurements. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals |
| spellingShingle |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals Kunets, V.P. Kulish, N.R. Kunets, Vas.P. Lisitsa, M.P. |
| title_short |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals |
| title_full |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals |
| title_fullStr |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals |
| title_full_unstemmed |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals |
| title_sort |
urbach’s rule peculiarities in structures with cdsxse₁₋x nanocrystals |
| author |
Kunets, V.P. Kulish, N.R. Kunets, Vas.P. Lisitsa, M.P. |
| author_facet |
Kunets, V.P. Kulish, N.R. Kunets, Vas.P. Lisitsa, M.P. |
| publishDate |
2002 |
| language |
English |
| container_title |
Semiconductor Physics Quantum Electronics & Optoelectronics |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| format |
Article |
| description |
We have found that the long wavelength fundamental absorption edge of CdSXSe₁-x nanocrystals grown in an oxide glass follows to the generalized Urbach rule that takes into account both the dynamic (phonon induced) and static (defect induced) disorders of nanocrystal lattice. Temperature intervals with the dominant influence of both disorders on the absorption edge were determined. We have also estimated Urbach rule constants comparing them with the bulk ones. Using various Urbach`s rule theories we analyzed the most considerable changes of nanocrystal parameters when their sizes are decreased down to the quantum scale. It was found that the exciton-phonon coupling constant and exciton localization one are increased; the average electric fields induced by phonons and charged point defects are also increased.
|
| issn |
1560-8034 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/119569 |
| citation_txt |
Urbach’s rule peculiarities in structures with CdSxSe₁₋x nanocrystals / V.P. Kunets, N.R. Kulish, Vas.P. Kunets, M.P. Lisitsa // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2002. — Т. 5, № 1. — С. 9-15. — Бібліогр.: 16 назв. — англ. |
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2025-12-02T13:41:15Z |
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