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Perovskite Solar Cells

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Chinese researchers build perovskite solar cells that work underwater for years

A team of Chinese scientists modified perovskite solar cells to survive and function while submerged several meters below the ocean surface. By altering the perovskite's chemical composition, adding a water-repelling coating, and using larger crystal structures, they created cells resistant to seawater degradation that still efficiently capture dim, filtered sunlight.

Yunnan University team builds perovskite solar cells that work underwater

Researchers led by Simin Ma at Yunnan University developed perovskite solar cells specifically tuned to convert the blue-shifted light that penetrates several meters underwater into electricity. They addressed the material's usual weakness to moisture by adding polyhexamethylene guanidine hydrochloride, which forms a water-repelling layer and strengthens the crystal structure, improving both durability and power output.