|Publication type:||Article in scientific journal|
|Type of review:||Peer review (publication)|
|Title:||Over 24% efficient MA-free CsxFA1−xPbX3 perovskite solar cells|
|Publisher / Ed. Institution:||Cell Press|
|Subject (DDC):||621.3: Electrical, communications, control engineering|
|Abstract:||Methylammonium (MA)-free perovskites such as CsxFA1-xPbX3 (CsFA) show excellent thermal stability, favoring their use in perov-skite solar cells (PSCs). However, the power conversion efficiency (PCE) of CsFA lags behind that of MA-containing formulations due to the difficulty in controlling the film morphology. Herein, we report innovative morphology engineering using solution deposition of a mixture of CsBr, PbI2, and PbCl2 followed by vacuum evaporation of formamidinium iodide (FAI) to fabricate CsFA films. The introduction of a chloride precursor leads to larger grain sizes, forming a high-quality CsFA film under annealing. This enables the realization of robust CsFA-based PSCs with the highest reported PCE up to 24.1% (certified 23.9%) for 0.1 cm2 and 22.8% for 1 cm2 devices. Moreover, the unencapsulated evaporation device shows excellent stability with negligible efficiency decline after 20,000 h of storage in dry air or 1,000 h of exposure to 50% humidity, which is much better than the device prepared using the solution procedure.|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||School of Engineering|
|Organisational Unit:||Institute of Computational Physics (ICP)|
|Appears in collections:||Publikationen School of Engineering|
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Wang, S., Tan, L., Zhou, J., Li, M., Zhao, X., Li, H., Tress, W., Ding, L., Graetzel, M., & Yi, C. (2022). Over 24% efficient MA-free CsxFA1−xPbX3 perovskite solar cells. Joule, 6(6), 1344–1356. https://doi.org/10.1016/j.joule.2022.05.002
Wang, S. et al. (2022) ‘Over 24% efficient MA-free CsxFA1−xPbX3 perovskite solar cells’, Joule, 6(6), pp. 1344–1356. Available at: https://doi.org/10.1016/j.joule.2022.05.002.
S. Wang et al., “Over 24% efficient MA-free CsxFA1−xPbX3 perovskite solar cells,” Joule, vol. 6, no. 6, pp. 1344–1356, 2022, doi: 10.1016/j.joule.2022.05.002.
Wang, Siyang, et al. “Over 24% Efficient MA-Free CsxFA1−xPbX3 Perovskite Solar Cells.” Joule, vol. 6, no. 6, 2022, pp. 1344–56, https://doi.org/10.1016/j.joule.2022.05.002.
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