Acetamidinium-Methylammonium-Based Layered Hybrid Halide Perovskite [CH3C(NH2)2][CH3NH3]PbI4: Synthesis, Structure, and Optical Properties

Fateev, Sergey A.; Khrustalev, V. N.; Simonova, A. V.; Belikova, Daria E.; Goodilin, Eugene A.; Tarasov, Alexey B.

doi:10.1134/s0036023622070087

Cited by 12 publications

(2 citation statements)

References 27 publications

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“…All films spin-coated from DMSO solutions demonstrate intense narrow and slightly blue-shifted PL peak of 3D perovskite FAPbBr 3 (559–562 nm, Figure S1 ) with a shoulder corresponding to broad PL maximum ofFAPbBr 3 ·DMSO solvate (in the case of PMMA-capped intermediate film only broad PL of solvate is observed in some pints of the film). Whereas DMF-processed films show higher blue shift of the PL band (553–562 nm, Figure S1 ) of 3D perovskite along with broad shoulder associated with radiative recombination caused by stacking faults and other 2D-defects [ 34 ] characteristic for FA 2 PbBr 4 phase [ 19 ] and other layered perovskites with small intralayer cations [ 35 , 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Crystallization Pathways of FABr-PbBr2-DMF and FABr-PbBr2-DMSO Systems: The Comprehensive Picture of Formamidinium-Based Low-Dimensional Perovskite-Related Phases and Intermediate Solvates

Fateev

Marchenko

Shatilova

et al. 2022

IJMS

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In this study, we systematically investigated the phase diversity and crystallization pathways of the FABr excessive regions of two ternary systems of FABr-PbBr2-DMF and FABr-PbBr2-DMSO (where FA+—formamidinium cations, DMF—dimethylformamide and DMSO—dimethyl sulfoxide solvents). In these systems, a new FA3PbBr5 phase with a structure containing chains of vertex-connected PbBr6 octahedra is discovered, and its crystal structure is refined. We experimentally assess fundamental information on differences in the mechanisms of crystallization process in FABr-PbBr2-DMF and FABr-PbBr2-DMSO systems and determine possible pathways of crystallization of hybrid perovskites. We show that intermediate solvate phases are not observed in the system with DMF solvent, while a number of crystalline solvates tend to form in the system with DMSO at various amounts of FABr excess.

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Section: Resultsmentioning

confidence: 99%

Crystallization Pathways of FABr-PbBr2-DMF and FABr-PbBr2-DMSO Systems: The Comprehensive Picture of Formamidinium-Based Low-Dimensional Perovskite-Related Phases and Intermediate Solvates

Fateev

Marchenko

Shatilova

et al. 2022

IJMS

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“…[34] In most cases, the RP and DJ phases correspond to the previously mentioned A′ site cation parameters, m = 2 or 1, respectively. For the ACI phase, although acetamidinium (ACA + ) has been found in recent years to form the ACI phase structure, [35] current research still primarily focuses on guanidinium (GA + ) as the interlayer cation, with relatively limited studies on the screening of intercalating cations. [36] Therefore, the discussion mainly focuses on perovskite's RP and DJ phases.…”

Section: Structure Of 2d Perovskitementioning

confidence: 99%

What Matters for the Charge Transport of 2D Perovskites?

Zhang,

Abdi‐Jalebi,

Larson

et al. 2024

Advanced Materials

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Compared to three‐dimensional (3D) perovskites, two‐dimensional (2D) perovskites exhibit excellent stability, structural diversity, and tunable bandgaps, making them highly promising for applications in solar cells, light‐emitting diodes and photodetectors. However, the trade‐off for worse charge transport is a critical issue that needs to be addressed. This comprehensive review first discusses the structure of 3D and 2D metal halide perovskites, then summarizes the significant factors influencing charge transport in detail and provides a brief overview of the testing methods. Subsequently, various strategies to improve the charge transport are presented, including tuning A'‐site organic spacer cations, A‐site cations, B‐site metal cations, and X‐site halide ions. Finally, an outlook on the future development of improving the 2D perovskites’ charge transport is discussed.This article is protected by copyright. All rights reserved

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