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Xiao, Ke; Lin, Yen-Hung; Zhang, Mei; Oliver, Robert D J; Wang, Xi; Liu, Zhou; Luo, Xin; Li, Jia; Lai, Donny; Luo, Haowen; Lin, Renxing; Xu, Jun; Hou, Yi; Snaith, Henry J; Tan, Hairen
Science (American Association for the Advancement of Science), 2022-May-13, 2022-05-13, 20220513, Letnik: 376, Številka: 6594Journal Article
Challenges in fabricating all-perovskite tandem solar cells as modules rather than as single-junction configurations include growing high-quality wide-bandgap perovskites and mitigating irreversible degradation caused by halide and metal interdiffusion at the interconnecting contacts. We demonstrate efficient all-perovskite tandem solar modules using scalable fabrication techniques. By systematically tuning the cesium ratio of a methylammonium-free 1.8-electron volt mixed-halide perovskite, we improve the homogeneity of crystallization for blade-coated films over large areas. An electrically conductive conformal "diffusion barrier" is introduced between interconnecting subcells to improve the power conversion efficiency (PCE) and stability of all-perovskite tandem solar modules. Our tandem modules achieve a certified PCE of 21.7% with an aperture area of 20 square centimeters and retain 75% of their initial efficiency after 500 hours of continuous operation under simulated 1-sun illumination.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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