Cargando…
Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals
Significant interest exists in lead trihalides that present the perovskite structure owing to their demonstrated potential in photovoltaic, lasing, and display applications. These materials are also notable for their unusual phase behavior often displaying easily accessible phase transitions. In thi...
Autores principales: | , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6353988/ https://www.ncbi.nlm.nih.gov/pubmed/30700706 http://dx.doi.org/10.1038/s41467-019-08362-3 |
_version_ | 1783391080916451328 |
---|---|
author | Kirschner, Matthew S. Diroll, Benjamin T. Guo, Peijun Harvey, Samantha M. Helweh, Waleed Flanders, Nathan C. Brumberg, Alexandra Watkins, Nicolas E. Leonard, Ariel A. Evans, Austin M. Wasielewski, Michael R. Dichtel, William R. Zhang, Xiaoyi Chen, Lin X. Schaller, Richard D. |
author_facet | Kirschner, Matthew S. Diroll, Benjamin T. Guo, Peijun Harvey, Samantha M. Helweh, Waleed Flanders, Nathan C. Brumberg, Alexandra Watkins, Nicolas E. Leonard, Ariel A. Evans, Austin M. Wasielewski, Michael R. Dichtel, William R. Zhang, Xiaoyi Chen, Lin X. Schaller, Richard D. |
author_sort | Kirschner, Matthew S. |
collection | PubMed |
description | Significant interest exists in lead trihalides that present the perovskite structure owing to their demonstrated potential in photovoltaic, lasing, and display applications. These materials are also notable for their unusual phase behavior often displaying easily accessible phase transitions. In this work, time-resolved X-ray diffraction, performed on perovskite cesium lead bromide nanocrystals, maps the lattice response to controlled excitation fluence. These nanocrystals undergo a reversible, photoinduced orthorhombic-to-cubic phase transition which is discernible at fluences greater than 0.34 mJ cm(−2) through the loss of orthorhombic features and shifting of high-symmetry peaks. This transition recovers on the timescale of 510 ± 100 ps. A reversible crystalline-to-amorphous transition, observable through loss of Bragg diffraction intensity, occurs at higher fluences (greater than 2.5 mJ cm(−2)). These results demonstrate that light-driven phase transitions occur in perovskite materials, which will impact optoelectronic applications and enable the manipulation of non-equilibrium phase characteristics of the broad perovskite material class. |
format | Online Article Text |
id | pubmed-6353988 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63539882019-02-01 Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals Kirschner, Matthew S. Diroll, Benjamin T. Guo, Peijun Harvey, Samantha M. Helweh, Waleed Flanders, Nathan C. Brumberg, Alexandra Watkins, Nicolas E. Leonard, Ariel A. Evans, Austin M. Wasielewski, Michael R. Dichtel, William R. Zhang, Xiaoyi Chen, Lin X. Schaller, Richard D. Nat Commun Article Significant interest exists in lead trihalides that present the perovskite structure owing to their demonstrated potential in photovoltaic, lasing, and display applications. These materials are also notable for their unusual phase behavior often displaying easily accessible phase transitions. In this work, time-resolved X-ray diffraction, performed on perovskite cesium lead bromide nanocrystals, maps the lattice response to controlled excitation fluence. These nanocrystals undergo a reversible, photoinduced orthorhombic-to-cubic phase transition which is discernible at fluences greater than 0.34 mJ cm(−2) through the loss of orthorhombic features and shifting of high-symmetry peaks. This transition recovers on the timescale of 510 ± 100 ps. A reversible crystalline-to-amorphous transition, observable through loss of Bragg diffraction intensity, occurs at higher fluences (greater than 2.5 mJ cm(−2)). These results demonstrate that light-driven phase transitions occur in perovskite materials, which will impact optoelectronic applications and enable the manipulation of non-equilibrium phase characteristics of the broad perovskite material class. Nature Publishing Group UK 2019-01-30 /pmc/articles/PMC6353988/ /pubmed/30700706 http://dx.doi.org/10.1038/s41467-019-08362-3 Text en © This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2019 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 Kirschner, Matthew S. Diroll, Benjamin T. Guo, Peijun Harvey, Samantha M. Helweh, Waleed Flanders, Nathan C. Brumberg, Alexandra Watkins, Nicolas E. Leonard, Ariel A. Evans, Austin M. Wasielewski, Michael R. Dichtel, William R. Zhang, Xiaoyi Chen, Lin X. Schaller, Richard D. Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title | Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title_full | Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title_fullStr | Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title_full_unstemmed | Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title_short | Photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
title_sort | photoinduced, reversible phase transitions in all-inorganic perovskite nanocrystals |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6353988/ https://www.ncbi.nlm.nih.gov/pubmed/30700706 http://dx.doi.org/10.1038/s41467-019-08362-3 |
work_keys_str_mv | AT kirschnermatthews photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT dirollbenjamint photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT guopeijun photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT harveysamantham photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT helwehwaleed photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT flandersnathanc photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT brumbergalexandra photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT watkinsnicolase photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT leonardariela photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT evansaustinm photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT wasielewskimichaelr photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT dichtelwilliamr photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT zhangxiaoyi photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT chenlinx photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals AT schallerrichardd photoinducedreversiblephasetransitionsinallinorganicperovskitenanocrystals |