Document Type
Article
Publication Date
2021
DOI
10.3390/ma14216422
Publication Title
Materials
Volume
14
Issue
21
Pages
6422 (1-7)
Abstract
In this study, we fabricated and characterized uniform multi-cation perovskite FAxMA1−xPbI3 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 FAPbI3 in the FAxMA1−xPbI3 films. The formation of δ-phase FAPbI3 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.
Original Publication Citation
Yu, H.M., Jeon, B.G., Park, D.Y., Lim, S.C., Namkoong, G., & Jeong, M.S. (2021) Investigation of cation exchange behaviors of FAxMA1−xPbI3 films using dynamic spin-coating. Materials, 14(21), 1-7, Article 6422. https://doi.org/10.3390/ma14216422
Repository Citation
Yu, H.M., Jeon, B.G., Park, D.Y., Lim, S.C., Namkoong, G., & Jeong, M.S. (2021) Investigation of cation exchange behaviors of FAxMA1−xPbI3 films using dynamic spin-coating. Materials, 14(21), 1-7, Article 6422. https://doi.org/10.3390/ma14216422
Comments
© 2021 by the authors.
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