MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic
Generally, referring to the stability of perovskite, the most studied perovskite material has been MA-free mixed-cation perovskite. The precise role of MA in the light-thermal-humid stability of perovskite solar cells still lacks of a systematically understanding. In this work, the evolution of crys...
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KeAi Communications Co. Ltd.
2025-02-01
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| Series: | Advanced Powder Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772834X24000952 |
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| author | Congtan Zhu Xueyi Guo Si Xiao Weihuang Lin Zhaozhe Chen Lin Zhang Hui Zhang Xiangming Xiong Ying Yang |
| author_facet | Congtan Zhu Xueyi Guo Si Xiao Weihuang Lin Zhaozhe Chen Lin Zhang Hui Zhang Xiangming Xiong Ying Yang |
| author_sort | Congtan Zhu |
| collection | DOAJ |
| description | Generally, referring to the stability of perovskite, the most studied perovskite material has been MA-free mixed-cation perovskite. The precise role of MA in the light-thermal-humid stability of perovskite solar cells still lacks of a systematically understanding. In this work, the evolution of crystallographic structures, intermediate phase, ultrafast dynamics, and thermal decomposition behavior of MA-mixed perovskite FA1-xMAxPbI3 (x=0–100%) are investigated. The influence of MA on the stability of devices under heat, light, and humidity exposure are revealed. In the investigated compositional space (x=0–100%), device efficiencies vary from 19.5% to 22.8%, and the light, thermal, and humidity exposure stability of the related devices are obviously improved for FA1-xMAxPbI3 (x=20%–30%). Incorporation 20%–30% of MA cations lowers nucleation barrier and causes a significant volume shrinkage, which enhances the interaction between FA and I, thus improving crystallization and stability of the FA1-xMAxPbI3. Thermal behavior analysis reveals that the decomposition temperature of FA0.8MA0.2PbI3 reaches 247 °C (FAPbI3, 233 °C) and trace amounts of MA cations enhance the thermal stability of the perovskite. Remarkably, we observe lattice shrinkage using spherical aberration corrected transmission electron microscope (AC-TEM). This work implies that stabilizing perovskites will be realized by incorporating trace amounts of MA, which improve the crystallization and carrier transport, leading to improved stability and performances. |
| format | Article |
| id | doaj-art-ceeebe16c52c4e71a1e718b4fb495b20 |
| institution | DOAJ |
| issn | 2772-834X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Advanced Powder Materials |
| spelling | doaj-art-ceeebe16c52c4e71a1e718b4fb495b202025-08-20T03:15:16ZengKeAi Communications Co. Ltd.Advanced Powder Materials2772-834X2025-02-014110026410.1016/j.apmate.2024.100264MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaicCongtan Zhu0Xueyi Guo1Si Xiao2Weihuang Lin3Zhaozhe Chen4Lin Zhang5Hui Zhang6Xiangming Xiong7Ying Yang8School of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha, 410083, China; Corresponding author.Generally, referring to the stability of perovskite, the most studied perovskite material has been MA-free mixed-cation perovskite. The precise role of MA in the light-thermal-humid stability of perovskite solar cells still lacks of a systematically understanding. In this work, the evolution of crystallographic structures, intermediate phase, ultrafast dynamics, and thermal decomposition behavior of MA-mixed perovskite FA1-xMAxPbI3 (x=0–100%) are investigated. The influence of MA on the stability of devices under heat, light, and humidity exposure are revealed. In the investigated compositional space (x=0–100%), device efficiencies vary from 19.5% to 22.8%, and the light, thermal, and humidity exposure stability of the related devices are obviously improved for FA1-xMAxPbI3 (x=20%–30%). Incorporation 20%–30% of MA cations lowers nucleation barrier and causes a significant volume shrinkage, which enhances the interaction between FA and I, thus improving crystallization and stability of the FA1-xMAxPbI3. Thermal behavior analysis reveals that the decomposition temperature of FA0.8MA0.2PbI3 reaches 247 °C (FAPbI3, 233 °C) and trace amounts of MA cations enhance the thermal stability of the perovskite. Remarkably, we observe lattice shrinkage using spherical aberration corrected transmission electron microscope (AC-TEM). This work implies that stabilizing perovskites will be realized by incorporating trace amounts of MA, which improve the crystallization and carrier transport, leading to improved stability and performances.http://www.sciencedirect.com/science/article/pii/S2772834X24000952Intermediate phaseLattice shrinkageBandgap renormalizationPerovskite solar cellsMA-Mixed perovskite |
| spellingShingle | Congtan Zhu Xueyi Guo Si Xiao Weihuang Lin Zhaozhe Chen Lin Zhang Hui Zhang Xiangming Xiong Ying Yang MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic Advanced Powder Materials Intermediate phase Lattice shrinkage Bandgap renormalization Perovskite solar cells MA-Mixed perovskite |
| title | MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic |
| title_full | MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic |
| title_fullStr | MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic |
| title_full_unstemmed | MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic |
| title_short | MA-activated lattice shrinkage and bandgap renormalization advancing the stability of FA1-xMAxPbI3 (x=0–1) perovskites photovoltaic |
| title_sort | ma activated lattice shrinkage and bandgap renormalization advancing the stability of fa1 xmaxpbi3 x 0 1 perovskites photovoltaic |
| topic | Intermediate phase Lattice shrinkage Bandgap renormalization Perovskite solar cells MA-Mixed perovskite |
| url | http://www.sciencedirect.com/science/article/pii/S2772834X24000952 |
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