Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.274
Publication date: 7th February 2022
Deposition of two-dimensional perovskite layers between perovskite absorber and hole-transporting layer is considered to be an essential strategy to reduce defects in state-of-the-art perovskite solar cells (PSCs). This strategy, however, suffers from the inevitable formation of in-plane favoured two-dimensional (2D) perovskite layers with impaired charge transport, especially under thermal conditions, impeding photovoltaic performance and device scale-up. Therefore, to overcome this limitation, we designed and investigated various cations that form 2D perovskite layers on top of the 3-dimensional perovskite layer. The ensuing PSCs achieve an efficiency of over 24% with long-term operational stability (over 1000 hours). Notably, a record efficiency of 23% for the perovskite module with an active area of 26 cm2 was achieved using compositionally engineered perovskite. In this talk, we will present strategies to enhance PSC's power conversion efficiency and stability.
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International Conference on Hybrid and Organic Photovoltaics
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