Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating

In this study, we fabricated and characterized uniform multi-cation perovskite FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> films. We used the dynamic spin-coating method to control the cation ratio of the film by gradually increasing the FA+, which replaced the...

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Main Authors: Hyang Mi Yu, Byeong Geun Jeong, Dae Young Park, Seong Chu Lim, Gon Namkoong, Mun Seok Jeong
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/14/21/6422
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author Hyang Mi Yu
Byeong Geun Jeong
Dae Young Park
Seong Chu Lim
Gon Namkoong
Mun Seok Jeong
author_facet Hyang Mi Yu
Byeong Geun Jeong
Dae Young Park
Seong Chu Lim
Gon Namkoong
Mun Seok Jeong
author_sort Hyang Mi Yu
collection DOAJ
description In this study, we fabricated and characterized uniform multi-cation perovskite FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> 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<sub>3</sub> in the FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> films. The formation of δ-phase FAPbI<sub>3</sub> 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 doaj.art-b289592c243c4c3184b41774d42dc3c72023-11-22T21:11:55ZengMDPI AGMaterials1996-19442021-10-011421642210.3390/ma14216422Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-CoatingHyang Mi Yu0Byeong Geun Jeong1Dae Young Park2Seong Chu Lim3Gon Namkoong4Mun Seok Jeong5Department of Energy Science, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Physics, Hanyang University, Seoul 04763, KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Physics, Hanyang University, Seoul 04763, KoreaIn this study, we fabricated and characterized uniform multi-cation perovskite FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> 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<sub>3</sub> in the FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> films. The formation of δ-phase FAPbI<sub>3</sub> 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.https://www.mdpi.com/1996-1944/14/21/6422cation exchangedynamic spin-coatingFA<sub>x</sub>MA<sub>1</sub><sub>−</sub><sub>x</sub>PbI<sub>3</sub>δ-phase FAPbI<sub>3</sub>FA cationsMA cations
spellingShingle Hyang Mi Yu
Byeong Geun Jeong
Dae Young Park
Seong Chu Lim
Gon Namkoong
Mun Seok Jeong
Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
Materials
cation exchange
dynamic spin-coating
FA<sub>x</sub>MA<sub>1</sub><sub>−</sub><sub>x</sub>PbI<sub>3</sub>
δ-phase FAPbI<sub>3</sub>
FA cations
MA cations
title Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
title_full Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
title_fullStr Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
title_full_unstemmed Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
title_short Investigation of Cation Exchange Behaviors of FA<sub>x</sub>MA<sub>1−x</sub>PbI<sub>3</sub> Films Using Dynamic Spin-Coating
title_sort investigation of cation exchange behaviors of fa sub x sub ma sub 1 x sub pbi sub 3 sub films using dynamic spin coating
topic cation exchange
dynamic spin-coating
FA<sub>x</sub>MA<sub>1</sub><sub>−</sub><sub>x</sub>PbI<sub>3</sub>
δ-phase FAPbI<sub>3</sub>
FA cations
MA cations
url https://www.mdpi.com/1996-1944/14/21/6422
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