Perovskite Solar Cells Achieve 1,530-Hour Durability

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University of Surrey researchers have found a way to make perovskite solar cells last ten times longer by adding alumina nanoparticles to their structure.

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The modified cells survived for 1,530 hours (over two months) under extreme conditions, compared to just 160 hours for standard versions.

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Perovskite cells offer a cheaper, lighter alternative to silicon panels but have been plagued by iodine leakage that causes rapid degradation.

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The tiny alumina particles effectively trap escaping iodine atoms, preventing the breakdown that has limited commercial adoption.

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Beyond trapping iodine, the nanoparticles create a more uniform cell structure with fewer defects and better electrical conductivity.

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A protective 2D perovskite layer forms around the nanoparticles, creating an additional defense against moisture - a known enemy of solar cell longevity.

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Lead researcher Hashini Perera called the results "incredibly exciting," noting that such durability "seemed out of reach" just a decade ago.

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