Some radiation effects in II-VI quantum dots
The effect of electron irradiation (E=0.6-1.8 MeV) on the optical characteristics (photoluminescence, PL) of CdTe/ZnTe structures with quantum dots, QDs, was investigated in the temperature range from 4.2 to 250 K. The data on the influence of irradiation on the temperature dependence of PL intensit...
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| Format: | Article |
| Language: | English |
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L.N. Gumilyov Eurasian National University
2021-11-01
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| Series: | Eurasian Journal of Physics and Functional Materials |
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| Online Access: | https://www.ephys.kz/jour/article/view/84 |
| _version_ | 1819174586318585856 |
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| author | M. B. Sharibaev Q. A. Ismailov |
| author_facet | M. B. Sharibaev Q. A. Ismailov |
| author_sort | M. B. Sharibaev |
| collection | DOAJ |
| description | The effect of electron irradiation (E=0.6-1.8 MeV) on the optical characteristics (photoluminescence, PL) of CdTe/ZnTe structures with quantum dots, QDs, was investigated in the temperature range from 4.2 to 250 K. The data on the influence of irradiation on the temperature dependence of PL intensity, energy position and PL line width, W, from QDs were obtained. The narrowing of PL band and the blue shift of the QD peak position are explained by quenching of the low energy component connected with larger QDs. A slight decrease in PL intensity for both QDs and the buffer ZnTe layer as well as a sharp drop in PL intensity for 1 ML CdTe quantum wells, QWs, and fragments accompanied by a change in the activation energy of the PL quenching is explained by the radiation defects localized near the QD interface. The obtained results show that under e-beam irradiation QDs are more stable than QWs, which is in agreementwith our previous investigations. |
| first_indexed | 2024-12-22T20:41:20Z |
| format | Article |
| id | doaj.art-d73904d6c236443db72ef9759d4c541e |
| institution | Directory Open Access Journal |
| issn | 2522-9869 2616-8537 |
| language | English |
| last_indexed | 2024-12-22T20:41:20Z |
| publishDate | 2021-11-01 |
| publisher | L.N. Gumilyov Eurasian National University |
| record_format | Article |
| series | Eurasian Journal of Physics and Functional Materials |
| spelling | doaj.art-d73904d6c236443db72ef9759d4c541e2022-12-21T18:13:19ZengL.N. Gumilyov Eurasian National UniversityEurasian Journal of Physics and Functional Materials2522-98692616-85372021-11-012435335910.29317/ejpfm.201802040783Some radiation effects in II-VI quantum dotsM. B. Sharibaev0Q. A. Ismailov1Muhammad al Khorezmi Tashkent University of Information TechnologiesKarakalpak State UniversityThe effect of electron irradiation (E=0.6-1.8 MeV) on the optical characteristics (photoluminescence, PL) of CdTe/ZnTe structures with quantum dots, QDs, was investigated in the temperature range from 4.2 to 250 K. The data on the influence of irradiation on the temperature dependence of PL intensity, energy position and PL line width, W, from QDs were obtained. The narrowing of PL band and the blue shift of the QD peak position are explained by quenching of the low energy component connected with larger QDs. A slight decrease in PL intensity for both QDs and the buffer ZnTe layer as well as a sharp drop in PL intensity for 1 ML CdTe quantum wells, QWs, and fragments accompanied by a change in the activation energy of the PL quenching is explained by the radiation defects localized near the QD interface. The obtained results show that under e-beam irradiation QDs are more stable than QWs, which is in agreementwith our previous investigations.https://www.ephys.kz/jour/article/view/84cdte/znte quantum dotsphotoluminescenceatomic force microscopyelectron beam irradiation |
| spellingShingle | M. B. Sharibaev Q. A. Ismailov Some radiation effects in II-VI quantum dots Eurasian Journal of Physics and Functional Materials cdte/znte quantum dots photoluminescence atomic force microscopy electron beam irradiation |
| title | Some radiation effects in II-VI quantum dots |
| title_full | Some radiation effects in II-VI quantum dots |
| title_fullStr | Some radiation effects in II-VI quantum dots |
| title_full_unstemmed | Some radiation effects in II-VI quantum dots |
| title_short | Some radiation effects in II-VI quantum dots |
| title_sort | some radiation effects in ii vi quantum dots |
| topic | cdte/znte quantum dots photoluminescence atomic force microscopy electron beam irradiation |
| url | https://www.ephys.kz/jour/article/view/84 |
| work_keys_str_mv | AT mbsharibaev someradiationeffectsiniiviquantumdots AT qaismailov someradiationeffectsiniiviquantumdots |