Exciton absorption spectra of KPb2Br5 thin films
Електронного архіву Харківського національного університету радіоелектроніки (Open Access Repository of KHNURE)
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Exciton absorption spectra of KPb2Br5 thin films
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| Creator |
Kovalenko, E. N.
Kovalenko, V. V. Yunakova, O. N. Yunakov, N. N. |
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| Subject |
thin films
absorption spectra exitons phase transition |
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| Description |
The absorption spectrum of KPb2Br5 thin film of tetragonal (I) and monoclinic (II) structures were investigated in the spectral region of 2-6 eV and the temperature range 90-440K. It was found that KPb2Br5 (I) of the tetragonal structure irreversibly becomes in KPb2Br5(II) of the monoclinic structure when T = 293 K. It is found that low-frequency exciton excitations of KPb2Br5 (I, II) are localized in the sublattice, which contains ions Pb2+, and its are two-dimensional nature.
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| Date |
2018-05-29T21:11:26Z
2018-05-29T21:11:26Z 2016 |
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| Type |
Article
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| Identifier |
Kovalenko E. N. Exciton absorption spectra of KPb2Br5 thin films / V. V. Kovalenko, E. N. Kovalenko, O. N. Yunakova, N. N. Yunakov // Functional Materials. –2016. – V, 23, №4. – p.570-575.
1027-5495 http://openarchive.nure.ua/handle/document/5556 |
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| Language |
en
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| Relation |
V, 23, №4;
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| Publisher |
Institute for Single Crystals
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