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The impact of the SnI2 purity on the formation of CsSnI3 perovskite modifications as monitored by 127I Nuclear Quadrupole Resonanceстатья
- Авторы: Kravchenko Eleonora A., Gippius Andrei A., Tkachev Aleksei V., Mastryukov Maksim V., Brekhovskikh Maria N.
- Журнал: Mendeleev Communications
- Том: 33
- Номер: 2
- Год издания: 2023
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 282
- Последняя страница: 284
- DOI: 10.1016/j.mencom.2023.02.043
- Аннотация: The relative content of the perovskite phase in two CsSnI3 samples (of 99.900 and 99.999 wt% SnI2 and 99.999 wt% CsI purity) was estimated using 127I NQR. The results showed that both samples contained the non-perovskite orthorhombic phase as an admixture. In the sample of higher purity (99.999 wt%) its content was insignificant – only trace amounts could be observed at 77 K, whereas atroom temperature the presence of the non-perovskite phase was not revealed. However, in the sample of 99.900 wt% purity the content of the non-perovskite phase has reached at least a third of the sample amount, which is due to the probable crystallization of the non-perovskite phase on impurities.
- Добавил в систему: Гиппиус Андрей Андреевич