Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.244
Publication date: 16th December 2024
In the past decade, the efficiency of lead halide perovskite-based solar cells has reached levels comparable to those of established silicon solar cells. This advancement makes perovskite solar cells (PSCs) particularly promising for future commercial applications. However, challenges such as long-term stability and scalability still need to be addressed before they can be commercially viable. Additive engineering is one approach that holds the potential for overcoming these challenges.
In this study, we presented a novel additive engineering approach for the formation of FAPbI3 perovskite layers by vapor deposition. The approach is based on a two-step deposition process in which PbI2 is vaporized together with additives. We found using SEM, XRD, UV-vis, and XPS that the additives significantly improve the efficiency of the precursor conversion process to FAPbI3 and lead to an improved microstructure of the perovskite films. When integrated into p-i-n solar cells without interfacial modifications, FAPbI3 layers achieve an efficiency of 18.34%, which is significantly superior to devices fabricated without additive engineering.
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