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Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites
The chemical nature of the organic cations governs the optoelectronic properties of two-dimensional organic-inorganic perovskites. But its mechanism is not fully understood. Here, we apply femtosecond broadband sum frequency generation vibrational spectroscopy to investigate the molecular conformati...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603336/ https://www.ncbi.nlm.nih.gov/pubmed/33127934 http://dx.doi.org/10.1038/s41467-020-19330-7 |
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author | Li, Chuanzhao Yang, Jin Su, Fuhai Tan, Junjun Luo, Yi Ye, Shuji |
author_facet | Li, Chuanzhao Yang, Jin Su, Fuhai Tan, Junjun Luo, Yi Ye, Shuji |
author_sort | Li, Chuanzhao |
collection | PubMed |
description | The chemical nature of the organic cations governs the optoelectronic properties of two-dimensional organic-inorganic perovskites. But its mechanism is not fully understood. Here, we apply femtosecond broadband sum frequency generation vibrational spectroscopy to investigate the molecular conformation of spacer organic cations in two-dimensional organic-inorganic perovskite films and establish a correlation among the conformation of the organic cations, the charge carrier mobility, and broadband emission. Our study indicates that both the mobility and broadband emission show strong dependence on the molecular conformational order of organic cations. The gauche defect and local chain distortion of organic cations are the structural origin of the in-plane mobility reduction and broad emission in two-dimensional organic-inorganic perovskites. Both of the interlayer distance and the conformational order of the organic cations affect the out-of-plane mobility. This work provides molecular-level understanding of the conformation of organic cations in optimizing the optoelectronic properties of two-dimensional organic-inorganic perovskites. |
format | Online Article Text |
id | pubmed-7603336 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-76033362020-11-10 Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites Li, Chuanzhao Yang, Jin Su, Fuhai Tan, Junjun Luo, Yi Ye, Shuji Nat Commun Article The chemical nature of the organic cations governs the optoelectronic properties of two-dimensional organic-inorganic perovskites. But its mechanism is not fully understood. Here, we apply femtosecond broadband sum frequency generation vibrational spectroscopy to investigate the molecular conformation of spacer organic cations in two-dimensional organic-inorganic perovskite films and establish a correlation among the conformation of the organic cations, the charge carrier mobility, and broadband emission. Our study indicates that both the mobility and broadband emission show strong dependence on the molecular conformational order of organic cations. The gauche defect and local chain distortion of organic cations are the structural origin of the in-plane mobility reduction and broad emission in two-dimensional organic-inorganic perovskites. Both of the interlayer distance and the conformational order of the organic cations affect the out-of-plane mobility. This work provides molecular-level understanding of the conformation of organic cations in optimizing the optoelectronic properties of two-dimensional organic-inorganic perovskites. Nature Publishing Group UK 2020-10-30 /pmc/articles/PMC7603336/ /pubmed/33127934 http://dx.doi.org/10.1038/s41467-020-19330-7 Text en © The Author(s) 2020 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 Li, Chuanzhao Yang, Jin Su, Fuhai Tan, Junjun Luo, Yi Ye, Shuji Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title | Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title_full | Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title_fullStr | Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title_full_unstemmed | Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title_short | Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
title_sort | conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603336/ https://www.ncbi.nlm.nih.gov/pubmed/33127934 http://dx.doi.org/10.1038/s41467-020-19330-7 |
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