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August 20,2025

China's Tongwei develops 31.4% efficient Perovskite-silicon Tandem Solar Cells

Chinese scientists led by Tongwei Co., Ltd developed high-efficiency perovskite-silicon tandem solar cells using a low-temperature sequential annealing process. Their two-terminal tandem device achieved a certified 31.4% power conversion efficiency, among the best for commercial silicon-based tandems.

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