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Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3)
Understanding the formation chemistry of metal halide perovskites is key to optimizing processing conditions and realizing enhanced optoelectronic properties. Here, we reveal the structure of the crystalline precursor in the formation of methylammonium lead iodide (MAPbI(3)) from the single-step dep...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6110813/ https://www.ncbi.nlm.nih.gov/pubmed/30150720 http://dx.doi.org/10.1038/s41467-018-05937-4 |
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author | Stone, Kevin H. Gold-Parker, Aryeh Pool, Vanessa L. Unger, Eva L. Bowring, Andrea R. McGehee, Michael D. Toney, Michael F. Tassone, Christopher J. |
author_facet | Stone, Kevin H. Gold-Parker, Aryeh Pool, Vanessa L. Unger, Eva L. Bowring, Andrea R. McGehee, Michael D. Toney, Michael F. Tassone, Christopher J. |
author_sort | Stone, Kevin H. |
collection | PubMed |
description | Understanding the formation chemistry of metal halide perovskites is key to optimizing processing conditions and realizing enhanced optoelectronic properties. Here, we reveal the structure of the crystalline precursor in the formation of methylammonium lead iodide (MAPbI(3)) from the single-step deposition of lead chloride and three equivalents of methylammonium iodide (PbCl(2) + 3MAI) (MA = CH(3)NH(3)). The as-spun film consists of crystalline MA(2)PbI(3)Cl, which is composed of one-dimensional chains of lead halide octahedra, coexisting with disordered MACl. We show that the transformation of precursor into perovskite is not favored in the presence of MACl, and thus the gradual evaporation of MACl acts as a self-regulating mechanism to slow the conversion. We propose the stable precursor phase enables dense film coverage and the slow transformation may lead to improved crystal quality. This enhanced chemical understanding is paramount for the rational control of film deposition and the fabrication of superior optoelectronic devices. |
format | Online Article Text |
id | pubmed-6110813 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61108132018-08-29 Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) Stone, Kevin H. Gold-Parker, Aryeh Pool, Vanessa L. Unger, Eva L. Bowring, Andrea R. McGehee, Michael D. Toney, Michael F. Tassone, Christopher J. Nat Commun Article Understanding the formation chemistry of metal halide perovskites is key to optimizing processing conditions and realizing enhanced optoelectronic properties. Here, we reveal the structure of the crystalline precursor in the formation of methylammonium lead iodide (MAPbI(3)) from the single-step deposition of lead chloride and three equivalents of methylammonium iodide (PbCl(2) + 3MAI) (MA = CH(3)NH(3)). The as-spun film consists of crystalline MA(2)PbI(3)Cl, which is composed of one-dimensional chains of lead halide octahedra, coexisting with disordered MACl. We show that the transformation of precursor into perovskite is not favored in the presence of MACl, and thus the gradual evaporation of MACl acts as a self-regulating mechanism to slow the conversion. We propose the stable precursor phase enables dense film coverage and the slow transformation may lead to improved crystal quality. This enhanced chemical understanding is paramount for the rational control of film deposition and the fabrication of superior optoelectronic devices. Nature Publishing Group UK 2018-08-27 /pmc/articles/PMC6110813/ /pubmed/30150720 http://dx.doi.org/10.1038/s41467-018-05937-4 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Stone, Kevin H. Gold-Parker, Aryeh Pool, Vanessa L. Unger, Eva L. Bowring, Andrea R. McGehee, Michael D. Toney, Michael F. Tassone, Christopher J. Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title | Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title_full | Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title_fullStr | Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title_full_unstemmed | Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title_short | Transformation from crystalline precursor to perovskite in PbCl(2)-derived MAPbI(3) |
title_sort | transformation from crystalline precursor to perovskite in pbcl(2)-derived mapbi(3) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6110813/ https://www.ncbi.nlm.nih.gov/pubmed/30150720 http://dx.doi.org/10.1038/s41467-018-05937-4 |
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