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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2019, Volume 109, Issue 1, Pages 30–35
DOI: https://doi.org/10.1134/S0370274X19010065 (Mi jetpl5787) 		 
This article is cited in 13 scientific papers (total in 13 papers)

CONDENSED MATTER

Terahertz vibrational modes in CH$_3$NH$_3$PbI$_3$ and CsPbI$_3$ perovskite films

A. V. Andrianova, A. N. Aleshina, L. B. Matyushkinb

a Ioffe Physical–Technical Institute, Russian Academy of Sciences, St. Petersburg, Russia
b St. Petersburg State Electrotechnical University LETI, St. Petersburg, Russia
Full-text PDF (286 kB) Citations (13)
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DOI: https://doi.org/10.1134/S0370274X19010065
Abstract: Films of CH$_3$NH$_3$PbI$_3$ organometallic perovskite, which is currently considered as a promising basic material for new-generation solar cells, as well as films containing CsPbI$_3$ inorganic lead-halid perovskite nanocrystals, have been studied in the spectral range of 0.2–2.9 THz at room temperature by terahertz time-domain spectroscopy. Several low-frequency vibrational modes previously attributed exclusively to vibrations of Pb-I bonds have been observed in the perovskite films under investigation in this spectral range. The comparison of terahertz characteristics of perovskites under study has shown that vibrations associated with a cation (CH$_3$ NH$_3^+$, Cs$^+$) make a significant contribution to the formation of the observed low-frequency vibrational modes in perovskites under consideration.
Funding agency Grant number
Russian Academy of Sciences - Federal Agency for Scientific Organizations I.7
Received: 18.09.2018
Revised: 26.10.2018
Accepted: 08.11.2018
English version:
Journal of Experimental and Theoretical Physics Letters, 2019, Volume 109, Issue 1, Pages 28–32
DOI: https://doi.org/10.1134/S0021364019010053
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. V. Andrianov, A. N. Aleshin, L. B. Matyushkin, “Terahertz vibrational modes in CH$_3$NH$_3$PbI$_3$ and CsPbI$_3$ perovskite films”, Pis'ma v Zh. Èksper. Teoret. Fiz., 109:1 (2019), 30–35; JETP Letters, 109:1 (2019), 28–32
Citation in format AMSBIB
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