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The electrode buffer layer is crucial for high‐performance and stable OSCs, optimizing charge transport and energy level alignment at the interface between the polymer active layer and electrode. Recently, SnO2 has emerged as a promising material for the cathode buffer layer due to its desirable properties, such as high electron mobility, transparency, and stability. Typically, SnO2 nanoparticle layers...
Thin‐Film Solar Cells
A facile CsF treatment enhances CZTSSe grain growth and phase homogeneity, resulting in effective charge transport and a favorable P‐N junction. This leads to a significant performance enhancement in CZTSSe thin‐film solar cells, increasing efficiency from 8.38% to 10.20%. The CsF‐treated CZTSSe bottom cell is integrated into a mechanically‐stacked perovskite/CZTSSe 4T tandem...
Cu2ZnSn(S,Se)4 (CZTSSe) thin film solar cells are an attractive choice for a bottom cell of the low‐cost and environmental tandem solar cells with perovskite. However, the progress in developing efficient perovskite/CZTSSe tandem solar cells has been hindered by the lack of high performance of the CZTSSe bottom cell. Here, an efficient CZTSSe bottom cell is demonstrated by adopting a facile and effective...