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періодичних видань НАН України
Exciton absorption spectra of KPb₂Br₅ thin films
Репозиторій DSpace/Manakin
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Exciton absorption spectra of KPb₂Br₅ thin films
Тема:
Characterization and properties
Інший ID:
DOI: doi.org/10.15407/fm23.04.570
Посилання:
Exciton absorption spectra of KPb₂Br₅ thin films / V.V. Kovalenko, E.N. Kovalenko, O.N. Yunakova, N.N. Yunakov // Functional Materials. — 2016. — Т. 23, № 4. — С. 570-575. — Бібліогр.: 20 назв. — англ.
Дата:
2016
Переглядів:
840
Завантажень:
559
Анотація:
Absorption spectra of KPb2Br5 thin films of tetragonal (I) and monoclinic (II) structures were investigated in the spectral region of 2-6 eV and the temperature range of 90-440 K. It was found that KPb₂Br₅(I) of the tetragonal structure irreversibly transferred in KPb₂Br₅(II) of the monoclinic structure when T = 293 K. It was found that low-frequency exciton excitations of KPb₂Br₅(I,II) were localized in the sublattice, which contained Pb²⁺ ions and were two-dimensional nature.
