Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures
A spatial distribution of the cation vacancy related defects and their influence on the formation processes of self-assembled nanoislands in CdSe/ZnSe heterostructures were investigated by photoluminescence methods. Self-assembling growth was achieved under low temperature (2300C) molecular beam epi...
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| Published in: | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Date: | 2003 |
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2003
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/118032 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures / L.V. Borkovska, N.O. Korsunska, V.I. Kushnirenko, Yu.G. Sadofyev, M.K. Sheinkman // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2003. — Т. 6, № 3. — С. 294-298. — Бібліогр.: 11 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862566932739260416 |
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| author | Borkovska, L.V. Korsunska, N.O. Kushnirenko, V.I. Sadofyev, Yu.G. Sheinkman, M.K. |
| author_facet | Borkovska, L.V. Korsunska, N.O. Kushnirenko, V.I. Sadofyev, Yu.G. Sheinkman, M.K. |
| citation_txt | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures / L.V. Borkovska, N.O. Korsunska, V.I. Kushnirenko, Yu.G. Sadofyev, M.K. Sheinkman // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2003. — Т. 6, № 3. — С. 294-298. — Бібліогр.: 11 назв. — англ. |
| collection | DSpace DC |
| container_title | Semiconductor Physics Quantum Electronics & Optoelectronics |
| description | A spatial distribution of the cation vacancy related defects and their influence on the formation processes of self-assembled nanoislands in CdSe/ZnSe heterostructures were investigated by photoluminescence methods. Self-assembling growth was achieved under low temperature (2300C) molecular beam epitaxy with a subsequent annealing step. To change a number of cation vacancy related defects a VI/II beam pressure ratio РVI/РII was varied from 2:1 to 5:1. In the samples grown under РVI/РII = 5:1 a significant increase of self activated emission band caused by cation vacancy related defects was found. A study of the excitation spectra of defect related band revealed that in all samples the cation vacancy related defects are present in ZnCdSe wetting layer. In the samples grown under РVI/РII = 5:1 they were observed on nanoisland interface too. It was found that the increase of Se beam pressure results also in high energy shift and narrowing of nanoisland emission band. This process is accompanied by low energy shift of ZnSe band-to-band emission. Observed changes in photoluminescence spectra are explained by the decrease of Cd content in ZnCdSe layer due to enhancement of Cd/Zn interdiffusion process in the result of the increase of vacancy related defect number.
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| first_indexed | 2025-11-26T00:08:25Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-118032 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1560-8034 |
| language | English |
| last_indexed | 2025-11-26T00:08:25Z |
| publishDate | 2003 |
| publisher | Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
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| spelling | Borkovska, L.V. Korsunska, N.O. Kushnirenko, V.I. Sadofyev, Yu.G. Sheinkman, M.K. 2017-05-28T09:03:34Z 2017-05-28T09:03:34Z 2003 Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures / L.V. Borkovska, N.O. Korsunska, V.I. Kushnirenko, Yu.G. Sadofyev, M.K. Sheinkman // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2003. — Т. 6, № 3. — С. 294-298. — Бібліогр.: 11 назв. — англ. 1560-8034 PACS: 78.55.Et; 78.67.Hc; 71.55Gs https://nasplib.isofts.kiev.ua/handle/123456789/118032 A spatial distribution of the cation vacancy related defects and their influence on the formation processes of self-assembled nanoislands in CdSe/ZnSe heterostructures were investigated by photoluminescence methods. Self-assembling growth was achieved under low temperature (2300C) molecular beam epitaxy with a subsequent annealing step. To change a number of cation vacancy related defects a VI/II beam pressure ratio РVI/РII was varied from 2:1 to 5:1. In the samples grown under РVI/РII = 5:1 a significant increase of self activated emission band caused by cation vacancy related defects was found. A study of the excitation spectra of defect related band revealed that in all samples the cation vacancy related defects are present in ZnCdSe wetting layer. In the samples grown under РVI/РII = 5:1 they were observed on nanoisland interface too. It was found that the increase of Se beam pressure results also in high energy shift and narrowing of nanoisland emission band. This process is accompanied by low energy shift of ZnSe band-to-band emission. Observed changes in photoluminescence spectra are explained by the decrease of Cd content in ZnCdSe layer due to enhancement of Cd/Zn interdiffusion process in the result of the increase of vacancy related defect number. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures Article published earlier |
| spellingShingle | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures Borkovska, L.V. Korsunska, N.O. Kushnirenko, V.I. Sadofyev, Yu.G. Sheinkman, M.K. |
| title | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures |
| title_full | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures |
| title_fullStr | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures |
| title_full_unstemmed | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures |
| title_short | Influence of cation vacancy related defects on the self-assembly processes in CdSe/ZnSe quantum dot heterostructures |
| title_sort | influence of cation vacancy related defects on the self-assembly processes in cdse/znse quantum dot heterostructures |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/118032 |
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