Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation

We demonstrate an ultrasonication-assisted synthesis without polar solvent of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals (PNCs) and their reversible transformation. The as-prepared CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs exhibit different optical properties that depend on their morphology, size...

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Autores principales: Rao, Longshi, Ding, Xinrui, Du, Xuewei, Liang, Guanwei, Tang, Yong, Tang, Kairui, Zhang, Jin Z
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2019
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6423595/
https://www.ncbi.nlm.nih.gov/pubmed/30931208
http://dx.doi.org/10.3762/bjnano.10.66
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author Rao, Longshi
Ding, Xinrui
Du, Xuewei
Liang, Guanwei
Tang, Yong
Tang, Kairui
Zhang, Jin Z
author_facet Rao, Longshi
Ding, Xinrui
Du, Xuewei
Liang, Guanwei
Tang, Yong
Tang, Kairui
Zhang, Jin Z
author_sort Rao, Longshi
collection PubMed
description We demonstrate an ultrasonication-assisted synthesis without polar solvent of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals (PNCs) and their reversible transformation. The as-prepared CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs exhibit different optical properties that depend on their morphology, size, and structure. The photoluminescence (PL) emission and quantum yield (QY) of the CsPbBr(3) PNCs can be tuned by changing the ultrasound power, radiation time, and the height of the vibrating spear. The optimized CsPbBr(3) PNCs show a good stability and high PL QY of up to 85%. In addition, the phase transformation between CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs can be obtained through varying the amount of oleylamine (OAm) and water. The mechanism of this transformation between the CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs and their morphology change are studied, involving ions equilibrium, anisotropic growth kinetics, and CsBr-stripping process.
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spelling pubmed-64235952019-03-29 Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation Rao, Longshi Ding, Xinrui Du, Xuewei Liang, Guanwei Tang, Yong Tang, Kairui Zhang, Jin Z Beilstein J Nanotechnol Full Research Paper We demonstrate an ultrasonication-assisted synthesis without polar solvent of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals (PNCs) and their reversible transformation. The as-prepared CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs exhibit different optical properties that depend on their morphology, size, and structure. The photoluminescence (PL) emission and quantum yield (QY) of the CsPbBr(3) PNCs can be tuned by changing the ultrasound power, radiation time, and the height of the vibrating spear. The optimized CsPbBr(3) PNCs show a good stability and high PL QY of up to 85%. In addition, the phase transformation between CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs can be obtained through varying the amount of oleylamine (OAm) and water. The mechanism of this transformation between the CsPbBr(3) PNCs and Cs(4)PbBr(6) PNCs and their morphology change are studied, involving ions equilibrium, anisotropic growth kinetics, and CsBr-stripping process. Beilstein-Institut 2019-03-06 /pmc/articles/PMC6423595/ /pubmed/30931208 http://dx.doi.org/10.3762/bjnano.10.66 Text en Copyright © 2019, Rao et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Rao, Longshi
Ding, Xinrui
Du, Xuewei
Liang, Guanwei
Tang, Yong
Tang, Kairui
Zhang, Jin Z
Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title_full Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title_fullStr Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title_full_unstemmed Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title_short Ultrasonication-assisted synthesis of CsPbBr(3) and Cs(4)PbBr(6) perovskite nanocrystals and their reversible transformation
title_sort ultrasonication-assisted synthesis of cspbbr(3) and cs(4)pbbr(6) perovskite nanocrystals and their reversible transformation
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6423595/
https://www.ncbi.nlm.nih.gov/pubmed/30931208
http://dx.doi.org/10.3762/bjnano.10.66
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