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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2021-10-01
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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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language | English |
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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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