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Solvent-Mediated Structural Evolution Mechanism from Cs4PbBr6 to CsPbBr3 Crystals

1
Laboratory of Nanotechnology and Computational Chemistry (NanoQC), Federal Technological University of Paraná (UTFPR), Londrina 86036-370, PR, Brazil
2
Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12006 Castelló, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Andres Castellanos-Gomez and Sotirios Baskoutas
Nanomanufacturing 2021, 1(2), 67-74; https://doi.org/10.3390/nanomanufacturing1020007
Received: 10 April 2021 / Revised: 25 May 2021 / Accepted: 26 May 2021 / Published: 5 July 2021
(This article belongs to the Special Issue Stable Perovskite Materials: From Synthesis to Optoelectronic Devices)
The study of the solvent-mediated structural evolution mechanism of the Cs4PbBr6 powders prepared using the solvothermal method is presented. The Cs4PbBr6 powders with a rhombohedral structure and an intense green emission (i.e., mainly due to the presence of complex defect states in the forbidden gap), which is stable in its solid-state form, but a distinct behavior is observed in different dispersions, easily detectable when irradiated with ultraviolet (UV) light. Depending on the polarity of the solvent, a change in the emission color from green to red is observed, easily detectable when irradiated with ultraviolet (UV) light. Our findings suggest that the solvent polarity affects the surface decomposition process, leading to a different change in composition, structure and crystal shape. This peculiar behavior plays a pivotal role in the control of the properties of Cs4PbBr6, and this study, therefore, offers a fundamental understanding needed for Cs4PbBr6 potential future applications. View Full-Text
Keywords: solvothermal processing; Cs4PbBr6; perovskite; structural evolution; solvent effects solvothermal processing; Cs4PbBr6; perovskite; structural evolution; solvent effects
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MDPI and ACS Style

La Porta, F.A.; Masi, S. Solvent-Mediated Structural Evolution Mechanism from Cs4PbBr6 to CsPbBr3 Crystals. Nanomanufacturing 2021, 1, 67-74. https://doi.org/10.3390/nanomanufacturing1020007

AMA Style

La Porta FA, Masi S. Solvent-Mediated Structural Evolution Mechanism from Cs4PbBr6 to CsPbBr3 Crystals. Nanomanufacturing. 2021; 1(2):67-74. https://doi.org/10.3390/nanomanufacturing1020007

Chicago/Turabian Style

La Porta, Felipe A., and Sofia Masi. 2021. "Solvent-Mediated Structural Evolution Mechanism from Cs4PbBr6 to CsPbBr3 Crystals" Nanomanufacturing 1, no. 2: 67-74. https://doi.org/10.3390/nanomanufacturing1020007

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