Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating

In this study, we fabricated and characterized uniform multi-cation perovskite FA(x)MA(1−x)PbI(3) films. We used the dynamic spin-coating method to control the cation ratio of the film by gradually increasing the FA+, which replaced the MA+ in the films. When the FA+ concentration was lower than xFA...

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Autores principales: Yu, Hyang Mi, Jeong, Byeong Geun, Park, Dae Young, Lim, Seong Chu, Namkoong, Gon, Jeong, Mun Seok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585367/
https://www.ncbi.nlm.nih.gov/pubmed/34771948
http://dx.doi.org/10.3390/ma14216422
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author Yu, Hyang Mi
Jeong, Byeong Geun
Park, Dae Young
Lim, Seong Chu
Namkoong, Gon
Jeong, Mun Seok
author_facet Yu, Hyang Mi
Jeong, Byeong Geun
Park, Dae Young
Lim, Seong Chu
Namkoong, Gon
Jeong, Mun Seok
author_sort Yu, Hyang Mi
collection PubMed
description In this study, we fabricated and characterized uniform multi-cation perovskite FA(x)MA(1−x)PbI(3) films. We used the dynamic spin-coating method to control the cation ratio of the film by gradually increasing the FA+, which replaced the MA+ in the films. When the FA+ concentration was lower than xFA ~0.415 in the films, the stability of the multi-cation perovskite improved. Above this concentration, the film exhibited δ-phase FAPbI(3) in the FA(x)MA(1−x)PbI(3) films. The formation of δ-phase FAPbI(3) disturbed the homogeneity of the photoluminescence spatial distribution and suppressed the absorption spectral bandwidth with the increasing bandgap. The precise control of the cation ratio of multi-cation perovskite films is necessary to optimize the energy-harvesting performance.
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spelling pubmed-85853672021-11-12 Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating Yu, Hyang Mi Jeong, Byeong Geun Park, Dae Young Lim, Seong Chu Namkoong, Gon Jeong, Mun Seok Materials (Basel) Communication In this study, we fabricated and characterized uniform multi-cation perovskite FA(x)MA(1−x)PbI(3) films. We used the dynamic spin-coating method to control the cation ratio of the film by gradually increasing the FA+, which replaced the MA+ in the films. When the FA+ concentration was lower than xFA ~0.415 in the films, the stability of the multi-cation perovskite improved. Above this concentration, the film exhibited δ-phase FAPbI(3) in the FA(x)MA(1−x)PbI(3) films. The formation of δ-phase FAPbI(3) disturbed the homogeneity of the photoluminescence spatial distribution and suppressed the absorption spectral bandwidth with the increasing bandgap. The precise control of the cation ratio of multi-cation perovskite films is necessary to optimize the energy-harvesting performance. MDPI 2021-10-26 /pmc/articles/PMC8585367/ /pubmed/34771948 http://dx.doi.org/10.3390/ma14216422 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Yu, Hyang Mi
Jeong, Byeong Geun
Park, Dae Young
Lim, Seong Chu
Namkoong, Gon
Jeong, Mun Seok
Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title_full Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title_fullStr Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title_full_unstemmed Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title_short Investigation of Cation Exchange Behaviors of FA(x)MA(1−x)PbI(3) Films Using Dynamic Spin-Coating
title_sort investigation of cation exchange behaviors of fa(x)ma(1−x)pbi(3) films using dynamic spin-coating
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585367/
https://www.ncbi.nlm.nih.gov/pubmed/34771948
http://dx.doi.org/10.3390/ma14216422
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