Effect of iodine impurity on the absorption spectrum and phase transitions in CsPbCl₃ thin films
The absorption spectra of thin films of solid solutions CsPb(Cl₁₋xIx)₃ 0≤x≤1 were studied. It has been found that at low concentrations x≤0.2, excitonic spectra of a amalgamation type (according to the classification of Onodera-Tojazawa) are formed. The concentration shift of the exciton bands with...
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| Published in: | Functional Materials |
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| Date: | 2018 |
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2018
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| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/157134 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Effect of iodine impurity on the absorption spectrum and phase transitions in CsPbCl₃ thin films / E.N. Kovalenko, O.N. Yunakova, N.N. Yunakov // Functional Materials. — 2018. — Т. 25, № 2. — С. 218-224. — Бібліогр.: 24 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The absorption spectra of thin films of solid solutions CsPb(Cl₁₋xIx)₃ 0≤x≤1 were studied. It has been found that at low concentrations x≤0.2, excitonic spectra of a amalgamation type (according to the classification of Onodera-Tojazawa) are formed. The concentration shift of the exciton bands with increasing x at x = 0.3 indicates the formation of the exciton spectrum of a persistence type in the interval 0.3≤x < 1. The iodine impurity leads to an insignificant increase of the phase ransition temperatures in the orthorhombic (Tc₃) and cubic (Tc₁) phases of CsPbCl₃.
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| ISSN: | 1027-5495 |