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Solvent engineering for scalable fabrication of perovskite/silicon tandem solar cells in air
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Solvent engineering for scalable fabrication of perovskite/silicon tandem solar cells in air
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Journal Article
Solvent engineering for scalable fabrication of perovskite/silicon tandem solar cells in air
2024
Overview
Perovskite/silicon tandem solar cells hold great promise for realizing high power conversion efficiency at low cost. However, achieving scalable fabrication of wide-bandgap perovskite (~1.68 eV) in air, without the protective environment of an inert atmosphere, remains challenging due to moisture-induced degradation of perovskite films. Herein, this study reveals that the extent of moisture interference is significantly influenced by the properties of solvent. We further demonstrate that n-Butanol (nBA), with its low polarity and moderate volatilization rate, not only mitigates the detrimental effects of moisture in air during scalable fabrication but also enhances the uniformity of perovskite films. This approach enables us to achieve an impressive efficiency of 29.4% (certified 28.7%) for double-sided textured perovskite/silicon tandem cells featuring large-size pyramids (2–3 μm) and 26.3% over an aperture area of 16 cm
2
. This advance provides a route for large-scale production of perovskite/silicon tandem solar cells, marking a significant stride toward their commercial viability.
The scalable fabrication of wide-bandgap perovskites in air remains challenging due to moisture-induced degradation of perovskites. Here, authors utilize low polarity and moderately volatile n-butanol to enhance film uniformity, achieving efficiency of 29.4% for double-sided textured tandem cells.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
