“Molecular Glue” Boosts Efficiency and Makes Perovskite Solar Cells Dramatically More Reliable Over Time

DM

A research team from Brown University has made a major step toward improving the long-term reliability of perovskite solar cells, an emerging clean energy technology. In a study to be published on Friday, May 7, 2021, in the journal Science, the team demonstrates a “molecular glue” that keeps a key interface inside cells from degrading. The treatment dramatically increases cells’ stability and reliability over time, while also improving the efficiency with which they convert sunlight into electricity. “There have been great strides in increasing the power-conversion efficiency of perovskite solar cells,” said Nitin Padture, a professor of engineering at Brown University and senior author of the new research. “But the final hurdle to be cleared before the technology can be widely available is reliability — making cells that maintain their performance over time. That’s one of the things my research group has been working on, and we’re happy to report some important progress.” Perovskites are a class of materials with a particular crystalline atomic structure.

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