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Amorphous (lysine)2PbI2 layer enhanced perovskite photovoltaics

MPG-Autoren
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Wan,  Li       
Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society;

Externe Ressourcen

https://doi.org/10.1038/s41467-024-51551-y
(Verlagsversion)

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s41467-024-51551-y.pdf
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Zitation

Wen, Y., Zhang, T., Wang, X., Liu, T., Wang, Y., Zhang, R., et al. (2024). Amorphous (lysine)2PbI2 layer enhanced perovskite photovoltaics. Nature Communications, 15: 7085. doi:10.1038/s41467-024-51551-y.


Zitierlink: https://hdl.handle.net/21.11116/0000-000F-CF9C-9
Zusammenfassung
Passivation materials play a crucial role in a wide range of high-efficiency, high-stability photovoltaic applications based on crystalline silicon and state-of-the-art perovskite materials. Currently, for perovskite photovoltaic, the mainstream passivation strategies routinely rely on crystalline materials. Herein, we have invented a new amorphous (lysine)2PbI2 layer-enhanced halide perovskite. By utilizing a solid phase reaction between PbI2 and lysine molecule, an amorphous (lysine)2PbI2 layer is formed at surface/grain boundaries in the perovskite films. The amorphous (lysine)2PbI2 with fewer dangling bonds can effectively neutralize surface/interface defects, achieving an impressive efficiency of 26.27% (certified 25.94%). Moreover, this amorphous layer not only reduces crystal lattice stress but also functions as a barrier against the decomposition of organic components, leading to suppressed de-structuring of perovskite and highly stable perovskite solar cells.