Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites

In lead halide perovskites, organic A-site cations are generally introduced to fine-tune the properties. One of the questions under debate is whether organic A-site cations are essential for high-performance solar cells. In this study, we compare the band edge carrier dynamics and diffusion process...

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Detalles Bibliográficos
Autores principales: Wang, Cheng, Rong, Yaoguang, Wang, Ti
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Higher Education Press 2023
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10519920/
https://www.ncbi.nlm.nih.gov/pubmed/37747592
http://dx.doi.org/10.1007/s12200-023-00078-z
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author Wang, Cheng
Rong, Yaoguang
Wang, Ti
author_facet Wang, Cheng
Rong, Yaoguang
Wang, Ti
author_sort Wang, Cheng
collection PubMed
description In lead halide perovskites, organic A-site cations are generally introduced to fine-tune the properties. One of the questions under debate is whether organic A-site cations are essential for high-performance solar cells. In this study, we compare the band edge carrier dynamics and diffusion process in MAPbBr(3) and CsPbBr(3) single-crystal microplates. By transient absorption microscopy, the band-edge carrier diffusion constants are unraveled. With the replacement of inorganic A-site cations, the diffusion constant in CsPbBr(3) increases almost 8 times compared to that in MAPbBr(3). This work reveals that introducing inorganic A-site cations can lead to a much larger diffusion length and improve the performance of band-edge carriers. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s12200-023-00078-z.
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spelling pubmed-105199202023-09-27 Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites Wang, Cheng Rong, Yaoguang Wang, Ti Front Optoelectron Research Article In lead halide perovskites, organic A-site cations are generally introduced to fine-tune the properties. One of the questions under debate is whether organic A-site cations are essential for high-performance solar cells. In this study, we compare the band edge carrier dynamics and diffusion process in MAPbBr(3) and CsPbBr(3) single-crystal microplates. By transient absorption microscopy, the band-edge carrier diffusion constants are unraveled. With the replacement of inorganic A-site cations, the diffusion constant in CsPbBr(3) increases almost 8 times compared to that in MAPbBr(3). This work reveals that introducing inorganic A-site cations can lead to a much larger diffusion length and improve the performance of band-edge carriers. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s12200-023-00078-z. Higher Education Press 2023-09-25 /pmc/articles/PMC10519920/ /pubmed/37747592 http://dx.doi.org/10.1007/s12200-023-00078-z Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Wang, Cheng
Rong, Yaoguang
Wang, Ti
Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title_full Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title_fullStr Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title_full_unstemmed Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title_short Inorganic A-site cations improve the performance of band-edge carriers in lead halide perovskites
title_sort inorganic a-site cations improve the performance of band-edge carriers in lead halide perovskites
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10519920/
https://www.ncbi.nlm.nih.gov/pubmed/37747592
http://dx.doi.org/10.1007/s12200-023-00078-z
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