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Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy

Organic-inorganic perovskite as a promising candidate for solar energy harvesting has attracted immense interest for its low-cost preparation and extremely high quantum efficiency. However, the fundamental understanding of the photophysics in perovskite remains elusive. In this work, we have reveale...

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Autores principales: Chen, Yanwen, Wang, Tianmeng, Li, Zhipeng, Li, Huanbin, Ye, Tao, Wetzel, Christian, Li, Hanying, Shi, Su-Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220243/
https://www.ncbi.nlm.nih.gov/pubmed/30405168
http://dx.doi.org/10.1038/s41598-018-34645-8
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author Chen, Yanwen
Wang, Tianmeng
Li, Zhipeng
Li, Huanbin
Ye, Tao
Wetzel, Christian
Li, Hanying
Shi, Su-Fei
author_facet Chen, Yanwen
Wang, Tianmeng
Li, Zhipeng
Li, Huanbin
Ye, Tao
Wetzel, Christian
Li, Hanying
Shi, Su-Fei
author_sort Chen, Yanwen
collection PubMed
description Organic-inorganic perovskite as a promising candidate for solar energy harvesting has attracted immense interest for its low-cost preparation and extremely high quantum efficiency. However, the fundamental understanding of the photophysics in perovskite remains elusive. In this work, we have revealed two distinct states in MAPbI(3) thin films at low temperature through time-resolved photoluminescence spectroscopy (TRPL). In particular, we observed a photo-induced carrier injection from the high energy (HE) state to the low energy (LE) state which has a longer lifetime. The strong interaction between the two states, evidenced by the injection kinetics, can be sensitively controlled through the excitation power. Understanding of the interacting two-states not only sheds light on the long PL lifetime in perovskite but also helps to understand the different behavior of perovskite in response to different excitation power. Further efforts in modifying the low energy state could significantly improve the quantum efficiency and lead to novel application in optoelectronics based on perovskite.
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spelling pubmed-62202432018-11-08 Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy Chen, Yanwen Wang, Tianmeng Li, Zhipeng Li, Huanbin Ye, Tao Wetzel, Christian Li, Hanying Shi, Su-Fei Sci Rep Article Organic-inorganic perovskite as a promising candidate for solar energy harvesting has attracted immense interest for its low-cost preparation and extremely high quantum efficiency. However, the fundamental understanding of the photophysics in perovskite remains elusive. In this work, we have revealed two distinct states in MAPbI(3) thin films at low temperature through time-resolved photoluminescence spectroscopy (TRPL). In particular, we observed a photo-induced carrier injection from the high energy (HE) state to the low energy (LE) state which has a longer lifetime. The strong interaction between the two states, evidenced by the injection kinetics, can be sensitively controlled through the excitation power. Understanding of the interacting two-states not only sheds light on the long PL lifetime in perovskite but also helps to understand the different behavior of perovskite in response to different excitation power. Further efforts in modifying the low energy state could significantly improve the quantum efficiency and lead to novel application in optoelectronics based on perovskite. Nature Publishing Group UK 2018-11-07 /pmc/articles/PMC6220243/ /pubmed/30405168 http://dx.doi.org/10.1038/s41598-018-34645-8 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
Chen, Yanwen
Wang, Tianmeng
Li, Zhipeng
Li, Huanbin
Ye, Tao
Wetzel, Christian
Li, Hanying
Shi, Su-Fei
Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title_full Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title_fullStr Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title_full_unstemmed Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title_short Communicating Two States in Perovskite Revealed by Time-Resolved Photoluminescence Spectroscopy
title_sort communicating two states in perovskite revealed by time-resolved photoluminescence spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220243/
https://www.ncbi.nlm.nih.gov/pubmed/30405168
http://dx.doi.org/10.1038/s41598-018-34645-8
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