Absorption spectra of layered ZnI₂ and K₂ZnI₄ compounds intercalated with CO₂

The absorption spectra of thin films of ZnI₂ and K₂ZnI₄ layered compounds intercalated with CO₂ molecules have been investigated in temperature interval from 90 to 240 K. It is found that the intercalation results in high-frequency shift of exciton bands and their broadening. Considering the structu...

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Бібліографічні деталі
Дата:2009
Автори: Yunakova, O.N., Miloslavsky, V.K., Kovalenko, E.N., Makovetsky, E.D.
Формат: Стаття
Мова:English
Опубліковано: НТК «Інститут монокристалів» НАН України 2009
Назва видання:Functional Materials
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Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/137720
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Absorption spectra of layered ZnI₂ and K₂ZnI₄ compounds intercalated with CO₂ // O.N. Yunakova, V.K. Miloslavsky, E.N. Kovalenko, E.D. Makovetsky // Functional Materials. — 2009. — Т. 16, № 2. — С. 130-135. — Бібліогр.: 13 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Резюме:The absorption spectra of thin films of ZnI₂ and K₂ZnI₄ layered compounds intercalated with CO₂ molecules have been investigated in temperature interval from 90 to 240 K. It is found that the intercalation results in high-frequency shift of exciton bands and their broadening. Considering the structure of ZnI₂ and K₂ZnI₄ crystal lattices, the most probable positions of CO₂ molecules in spacings between layers of compounds have been established. It is shown that, in K₂ZnI₄ compound, unlike ZnI₂, there are two position types of intercalant molecules with molecular axes of different orientation relative to the compound crystallographic axes.