FA2PbBr4: Synthesis, Structure, and Unusual Optical Properties of Two Polymorphs of Formamidinium-Based Layered (110) Hybrid Perovskite | Sciact - CRIS-system of Boreskov Institute of Catalysis

FA2PbBr4: Synthesis, Structure, and Unusual Optical Properties of Two Polymorphs of Formamidinium-Based Layered (110) Hybrid Perovskite Full article

Journal

Chemistry of Materials
ISSN: 0897-4756 , E-ISSN: 1520-5002

Output data

Year: 2021, Volume: 33, Number: 5, Pages: 1900-1907 Pages count : 8 DOI: 10.1021/acs.chemmater.1c00382

Tags

Absorption spectroscopy; Density functional theory; Lead alloys; Optical properties; Perovskite; Photoluminescence; Photoluminescence spectroscopy; Positive ions; Uranium metallography; Vanadium metallography

Authors

Fateev Sergey A. ¹ , Petrov Andrey A. ¹ , Marchenko Ekaterina I. ¹ , Zubavichus Yan V. ² , Khrustalev Victor N. ^3,4 , Petrov Andrey V. ⁵ , Aksenov Sergey M. ⁶ , Goodilin Eugene A. ^1,7 , Tarasov Alexey B. ^1,7

Affiliations

1	Laboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University
2	Federal Research Center Boreskov Institute of Catalysis
3	Inorganic Chemistry Department, Peoples’ Friendship University of Russia (RUDN University)
4	N.D. Zelinsky Institute of Organic Chemistry RAS
5	Institute of Chemistry, Saint-Petersburg State University
6	Laboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic, Kola Science Centre, Russian Academy of Sciences
7	Department of Chemistry, Lomonosov Moscow State University

Funding (2)

1	Ministry of Science and Higher Education of the Russian Federation	0239-2021-0002
2	Russian Science Foundation	19-73-30022 (АААА-А19-119100490003-4)

Small cations such as guanidinium and cesium can act as templating cations to form low-dimensional perovskite-like phases (two-dimensional (2D), one-dimensional (1D), zerodimensional (0D)) in the case of an excess of organic halides. However, such phases with the widely used formamidinium (FA+) cations have not been reported so far. In this study, we discovered two novel low-dimensional phases with FA2PbBr4 composition and investigated the prerequisites of their formation on the crystallization of FABr-excessive solutions of FAPbBr3. We found that both phases have the structure of (110) layered perovskite but are represented by two different polymorphs with “eclipsed” and “staggered” arrangement of adjacent layers. It was shown that FA2PbBr4 phases usually exist in a labile equilibrium with the FAPbBr3 three-dimensional (3D) perovskite and can form composites with it. The optical properties of both polymorphs were comprehensively studied by means of absorption spectroscopy, diffuse reflection spectroscopy, and photoluminescence spectroscopy. Density functional theory (DFT) calculations were applied to investigate the band structure of the FA2PbBr4 and to corroborate the conclusions on their optoelectronic properties. As a result, we found that FA2PbBr4 phases irradiated by UV can exhibit effective green photoluminescence due to the transfer of excitation energy to defective states or 3D perovskite inclusions.

Fateev S.A. , Petrov A.A. , Marchenko E.I. , Zubavichus Y.V. , Khrustalev V.N. , Petrov A.V. , Aksenov S.M. , Goodilin E.A. , Tarasov A.B.
FA2PbBr4: Synthesis, Structure, and Unusual Optical Properties of Two Polymorphs of Formamidinium-Based Layered (110) Hybrid Perovskite

Chemistry of Materials. 2021. V.33. N5. P.1900-1907. DOI: 10.1021/acs.chemmater.1c00382 WOS Scopus РИНЦ AN OpenAlex

Full text from publisher

Submitted:	Feb 2, 2021
Accepted:	Feb 10, 2021
Published online:	Feb 22, 2021
Published print:	Mar 9, 2021

Web of science:	WOS:000629032600037
Scopus:	2-s2.0-85102066093
Elibrary:	46759855
Chemical Abstracts:	2021:455510
OpenAlex:	W3132323937

DB	Citing
Scopus	36
Web of science	37
Elibrary	38
OpenAlex	42