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- W4280597923 abstract "Structural and electronic imperfections are the origin of defects and lead to nonradiative recombination that is detrimental to fabricating efficient perovskite solar cells. Here, we propose a powder engineering methodology for α-FAPbI3 as a precursor material. Our developed methodology of α-FAPbI3 synthesis mitigates the notorious structural and electronic imperfections evidenced by a significant decline in the microstrain and Urbach energy as compared to reported δ-FAPbI3 powder and conventional precursor routes. In addition to the performance enhancement in photovoltaics, our engineered powder showed remarkable thermal and moisture stability along with cost-effectiveness through the employment of low-grade PbI2. Further, through additive engineering, with the use of ultrahydrophobic perfluoroalkyl phosphate anion-based ionic liquids, the microstrain and Urbach energy achieved the lowest values of 1.67 × 10-4 and 12.47 meV, respectively, as a result of defect passivation and a semi-ionic F-Pb interaction that stabilizes the surface." @default.
- W4280597923 created "2022-05-22" @default.
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- W4280597923 date "2022-05-18" @default.
- W4280597923 modified "2023-10-14" @default.
- W4280597923 title "Microstrain and Urbach Energy Relaxation in FAPbI<sub>3</sub>-Based Solar Cells through Powder Engineering and Perfluoroalkyl Phosphate Ionic Liquid Additives" @default.
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- W4280597923 doi "https://doi.org/10.1021/acsami.2c01960" @default.
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